1
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Kang B, Li W, Jiang H, Qi C. Metal-free four-component coupling of cyclic diarylchloronium salts, tetrahydrothiophene, amines and carbon dioxide. Chem Commun (Camb) 2025; 61:3395-3398. [PMID: 39899333 DOI: 10.1039/d4cc05919k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2025]
Abstract
A four-component coupling reaction of cyclic diarylchloronium salts, tetrahydrothiophene, amines and CO2 has been reported for the first time under transition metal-free conditions, giving rise to a range of structurally diverse and useful sulfur-containing carbamates in high yields with excellent regioselectivities.
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Affiliation(s)
- Bangxiong Kang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Wei Li
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Chaorong Qi
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
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2
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Gu X, Wei Y, Zeng R, Lv J, Hou Y, Yu N, Tan S, Wang Z, Li C, Tang Z, Peng Q, Liu F, Cai Y, Zhang X, Huang H. Suppressing Exciton-Vibration Coupling via Intramolecular Noncovalent Interactions for Low-Energy-Loss Organic Solar Cells. Angew Chem Int Ed Engl 2025; 64:e202418926. [PMID: 39624005 DOI: 10.1002/anie.202418926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2024] [Accepted: 12/02/2024] [Indexed: 12/10/2024]
Abstract
Minimizing energy loss is crucial for breaking through the efficiency bottleneck of organic solar cells (OSCs). The main mechanism of energy loss can be attributed to non-radiative recombination energy loss (ΔEnr) that occurs due to exciton-vibration coupling. To tackle this challenge, tuning intramolecular noncovalent interactions is strategically utilized to tailor novel fused ring electron acceptors (FREAs). Upon comprehensive analysis of both theoretical and experimental results, this approach can effectively enhance molecular rigidity, suppress structural relaxation, reduce exciton reorganization energy, and weakens exciton-vibration coupling strength. Consequently, the binary OSC device based on Y-SeSe, which features dual strong intramolecular Se ⋅ ⋅ ⋅ O noncovalent interactions, achieves an outstanding power conversion efficiency (PCE) of 19.49 %, accompanied by an extremely small ΔEnr of 0.184 eV, much lower than those of Y-SS and Y-SSe based devices with weaker intramolecular noncovalent interactions. These achievements not only set an efficiency record for selenium-containing OSCs, but also mark the lowest reported ΔEnr value among high-performance binary devices. Furthermore, the ternary blend device showcases a remarkable PCE of 20.51 %, one of the highest PCEs for single-junction OSCs. This work demonstrates the effectiveness of intramolecular noncovalent interactions in suppressing exciton-vibration coupling, thereby achieving low-energy-loss and high-efficiency OSCs.
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Affiliation(s)
- Xiaobin Gu
- College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Yanan Wei
- College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Rui Zeng
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, In situ Center for Physical Science, and Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jikai Lv
- College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Yuqi Hou
- College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Na Yu
- Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Senke Tan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, In situ Center for Physical Science, and Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zaiyu Wang
- Department of Chemistry and the Hong Kong Branch of the Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Hong Kong, 999077, China
| | - Congqi Li
- College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Zheng Tang
- Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Qian Peng
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Feng Liu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, In situ Center for Physical Science, and Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yunhao Cai
- College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Xin Zhang
- College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Hui Huang
- College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, CAS Center for Excellence in Topological Quantum Computation, and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, 101408, China
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3
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Velusamy A, Chen Y, Lin M, Afraj SN, Liu J, Chen M, Liu C. Diselenophene-Dithioalkylthiophene Based Quinoidal Small Molecules for Ambipolar Organic Field Effect Transistors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305361. [PMID: 38095532 PMCID: PMC10916611 DOI: 10.1002/advs.202305361] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/26/2023] [Indexed: 03/07/2024]
Abstract
This work presents a series of novel quinoidal organic semiconductors based on diselenophene-dithioalkylthiophene (DSpDST) conjugated cores with various side-chain lengths (-thiohexyl, -thiodecyl, and -thiotetradecyl, designated DSpDSTQ-6, DSpDSTQ-10, and DSpDSTQ-14, respectively). The purpose of this research is to develop solution-processable organic semiconductors using dicyanomethylene end-capped organic small molecules for organic field effect transistors (OFETs) application. The physical, electrochemical, and electrical properties of these new DSpDSTQs are systematically studied, along with their performance in OFETs and thin film morphologies. Additionally, the molecular structures of DSpDSTQ are determined through density functional theory (DFT) calculations and single-crystal X-ray diffraction analysis. The results reveal the presence of intramolecular S (alkyl)···Se (selenophene) interactions, which result in a planar SR-containing DSpDSTQ core, thereby promoting extended π-orbital interactions and efficient charge transport in the OFETs. Moreover, the influence of thioalkyl side chain length on surface morphologies and microstructures is investigated. Remarkably, the compound with the shortest thioalkyl chain, DSpDSTQ-6, demonstrates ambipolar carrier transport with the highest electron and hole mobilities of 0.334 and 0.463 cm2 V-1 s-1 , respectively. These findings highlight the excellence of ambipolar characteristics of solution-processable OFETs based on DSpDSTQs even under ambient conditions.
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Affiliation(s)
- Arulmozhi Velusamy
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic ModulesNational Central UniversityTaoyuan32001Taiwan
| | - Yen‐Yu Chen
- Department of Materials Science and EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Meng‐Hao Lin
- Department of Materials Science and EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Shakil N. Afraj
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic ModulesNational Central UniversityTaoyuan32001Taiwan
| | - Jia‐Hao Liu
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic ModulesNational Central UniversityTaoyuan32001Taiwan
| | - Ming‐Chou Chen
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic ModulesNational Central UniversityTaoyuan32001Taiwan
| | - Cheng‐Liang Liu
- Department of Materials Science and EngineeringNational Taiwan UniversityTaipei10617Taiwan
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4
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Velusamy A, Afraj SN, Guo YS, Ni JS, Huang HL, Su TY, Ezhumalai Y, Liu CL, Chiang CH, Chen MC, Wu CG. Bicyclopentadithiophene-Based Organic Semiconductor for Stable and High-Performance Perovskite Solar Cells Exceeding 22. ACS APPLIED MATERIALS & INTERFACES 2024; 16:6162-6175. [PMID: 38277509 PMCID: PMC10859901 DOI: 10.1021/acsami.3c15774] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 12/30/2023] [Accepted: 01/09/2024] [Indexed: 01/28/2024]
Abstract
Well-performing organic-inorganic halide perovskites are susceptible to poor efficiency and instability due to their various defects at the interphases, grain boundaries (GBs), and surfaces. In this study, an in situ method is utilized for effectively passivating the under-coordinated Pb2+ defects of perovskite with new non-fullerene acceptors (NFAs) (INXBCDT; X = H, Cl, and Br) through their carbonyl and cyano functional groups during the antisolvent dripping process. It reveals that the bicyclopentadithiophene (BCDT) core with highly electron-withdrawing end-capping groups passivates GBs and boosts perovskite grain growth. This effective defect passivation decreases the trap density to increase the carrier recombination lifetime of the perovskite film. As a result, bromo-substituted dicyanomethylene indanone (INBr)-end-capped BCDT (INBrBCDT-b8; 3a)-passivated devices exhibit the highest power conversion efficiency (PCE) of 22.20% (vs those of 18.09% obtained for perovskite films without passivation) upon an optimized film preparation process. Note that devices treated with more soluble 2-ethylhexyl-substituted compounds (1a, 2a, and 3a) exhibit higher PCE than those treated with less soluble octyl-substituted compounds (1b, 2b, and 3b). It is also worth noting that BCDT is a cost-effective six-ring core that is easier to synthesize with a higher yield and therefore much cheaper than those with highly fused-ring cores. In addition, a long-term stability test in a glovebox for 1500 h reveals that the perovskite solar cells (PSCs) based on a perovskite absorber treated with compound 3a maintain ∼90% of their initial PCE. This is the first example of the simplest high-conjugation additive for perovskite film to achieve a PCE greater than 22% of the corresponding lead-based PSCs.
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Affiliation(s)
- Arulmozhi Velusamy
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Shakil N. Afraj
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Yu-Sheng Guo
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Jen-Shyang Ni
- Department
of Chemical and Materials Engineering, National
Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan
| | - Hung-Lin Huang
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Ting-Yu Su
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Yamuna Ezhumalai
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Cheng-Liang Liu
- Department
of Materials Science and Engineering, National
Taiwan University, Taipei 10617, Taiwan
| | - Chien-Hung Chiang
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Ming-Chou Chen
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Chun-Guey Wu
- Department
of Chemistry, National Central University, Taoyuan 32001, Taiwan
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5
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Bugaenko DI, Volkov AA, Karchava AV. A Thiol-Free Route to Alkyl Aryl Thioethers. J Org Chem 2023; 88:9968-9972. [PMID: 37432044 DOI: 10.1021/acs.joc.3c00734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Most existing methods for the synthesis of alkyl aryl thioethers require the use of mercaptans as the starting materials, which comes with practical limitations. Reactions of diaryliodonium salts with xanthate salts, easily prepared from the corresponding alcohols and CS2, under the developed conditions represent an operationally simple, thiol-free method for the synthesis of these valuable compounds. The protocol features high functional group tolerance and can be applied to the late-stage C-H functionalization and for the introduction of a CD3S group.
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Affiliation(s)
- Dmitry I Bugaenko
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
| | - Alexey A Volkov
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
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6
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Kuan CH, Balasaravanan R, Hsu SM, Ni JS, Tsai YT, Zhang ZX, Chen MC, Diau EWG. Dopant-Free Pyrrolopyrrole-Based (PPr) Polymeric Hole-Transporting Materials for Efficient Tin-Based Perovskite Solar Cells with Stability Over 6000 h. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2300681. [PMID: 37029333 DOI: 10.1002/adma.202300681] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 04/01/2023] [Indexed: 06/09/2023]
Abstract
A new set of pyrrolopyrrole-based (PPr) polymers incorporated with thioalkylated/alkylated bithiophene (SBT/BT) is synthesized and explored as hole-transporting materials (HTMs) for Sn-based perovskite solar cells (TPSCs). Three bithiophenyl spacers bearing the thioalkylated hexyl (SBT-6), thioalkylated tetradecyl (SBT-14), and tetradecyl (BT-14) chains are utilized to examine the effect of the alkyl chain lengths. Among them, the TPSCs are fabricated using PPr-SBT-14 as HTMs through a two-step approach by attaining a power conversion efficiency (PCE) of 7.6% with a remarkable long-term stability beyond 6000 h, which has not been reported elsewhere for a non-PEDOT:PSS-based TPSC. The PPr-SBT-14 device is stable under light irradiation for 5 h in air (50% relative humidity) at the maximum power point (MPP). The highly planar structure, strong intramolecular S(alkyl)···S(thiophene) interactions, and extended π-conjugation of SBT enable the PPr-SBT-14 device to outperform the standard poly(3-hexylthiophene,-2,5-diyl (P3HT) and other devices. The longer thio-tetradecyl chain in SBT-14 restricts molecular rotation and strongly affects the molecular conformation, solubility, and film wettability over other polymers. Thus, the present study makes a promising dopant-free polymeric HTM model for the future design of highly efficient and stable TPSCs.
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Affiliation(s)
- Chun-Hsiao Kuan
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Rajendiran Balasaravanan
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan, 320317, Taiwan
| | - Shih-Min Hsu
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
| | - Jen-Shyang Ni
- Department of Chemical and Materials Engineering, Photo-sensitive Material Advanced Research and Technology Center (Photo-SMART), National Kaohsiung University of Science and Technology, Kaohsiung, 824005, Taiwan
| | - Yi-Tai Tsai
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan, 320317, Taiwan
| | - Zhong-Xiang Zhang
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan, 320317, Taiwan
| | - Ming-Chou Chen
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan, 320317, Taiwan
| | - Eric Wei-Guang Diau
- Department of Applied Chemistry and Institute of Molecular Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu, 300093, Taiwan
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7
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Matsuda M, Lin CY, Enomoto K, Lin YC, Chen WC, Higashihara T. Impact of the Heteroatoms on Mobility–Stretchability Properties of n-Type Semiconducting Polymers with Conjugation Break Spacers. Macromolecules 2023. [DOI: 10.1021/acs.macromol.3c00109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Affiliation(s)
- Megumi Matsuda
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Chia-Yu Lin
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Kazushi Enomoto
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Yan-Cheng Lin
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
- Department of Chemical Engineering, National Cheng Kung University, Tainan City 70101, Taiwan
| | - Wen-Chang Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Tomoya Higashihara
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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8
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Liao YT, Hsiao YC, Lo YC, Lin CC, Lin PS, Tung SH, Wong KT, Liu CL. Solution-Processed Isoindigo- and Thienoisoindigo-Based Donor-Acceptor-Donor π-Conjugated Small Molecules: Synthesis, Morphology, Molecular Packing, and Field-Effect Transistor Characterization. ACS APPLIED MATERIALS & INTERFACES 2022; 14:55886-55897. [PMID: 36508279 DOI: 10.1021/acsami.2c18049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Molecular design and precise control of thin-film morphology and crystallinity of solution-processed small molecules are important for enhancing charge transport mobility of organic field-effect transistors and gaining more insight into the structure-property relationship. Here, two donor-acceptor-donor (D-A-D) architecture small molecules TRA-IID-TRA and TRA-TIID-TRA comprising an electron-donating triarylamine (TRA) and two different electron-withdrawing cores, isoindigo (IID) and thienoisoindigo (TIID), respectively, were synthesized and characterized. Replacing the phenylene rings of central IID A with thiophene gives a TIID core, which reduces the optical band gap and upshifts the energy levels of frontier molecular orbitals. The single-crystal structures and grazing-incidence wide-angle X-ray scattering (GIWAXS) analysis revealed that TRA-TIID-TRA exhibits the relatively tighter π-π stacking packing with preferential edge-on orientation, larger coherence length, and higher crystallinity due to the noncovalent S···O/S···π intermolecular interactions. The distinctly oriented and connected ribbon-like TRA-TIID-TRA crystalline film by the solution-shearing process achieved a superior hole mobility of 0.89 cm2 V-1 s-1 in the organic field-effect transistor (OFET) device, which is at least five times higher than that (0.17 cm2 V-1 s-1) of TRA-IID-TRA with clear cracks. Eventually, rational modulation of fused core in the π-conjugated D-A-D small molecule provides a new understanding of structural design for enhancing the performance of solution-processed organic semiconductors.
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Affiliation(s)
- Yu-Ting Liao
- Department of Chemistry, National Taiwan University, Taipei10617, Taiwan
| | - Yi-Chun Hsiao
- Department of Materials Science and Engineering, National Taiwan University, Taipei10617, Taiwan
| | - Yuan-Chih Lo
- Department of Chemistry, National Taiwan University, Taipei10617, Taiwan
| | - Chia-Chi Lin
- Department of Chemical and Materials Engineering, National Central University, Taoyuan32001, Taiwan
| | - Po-Shen Lin
- Department of Materials Science and Engineering, National Taiwan University, Taipei10617, Taiwan
| | - Shih-Huang Tung
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei10617, Taiwan
| | - Ken-Tsung Wong
- Department of Chemistry, National Taiwan University, Taipei10617, Taiwan
- Institute of Atomic and Molecular Science, Academia Sinica, Taipei10617, Taiwan
| | - Cheng-Liang Liu
- Department of Materials Science and Engineering, National Taiwan University, Taipei10617, Taiwan
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9
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Li C, Gu X, Chen Z, Han X, Yu N, Wei Y, Gao J, Chen H, Zhang M, Wang A, Zhang J, Wei Z, Peng Q, Tang Z, Hao X, Zhang X, Huang H. Achieving Record-Efficiency Organic Solar Cells upon Tuning the Conformation of Solid Additives. J Am Chem Soc 2022; 144:14731-14739. [PMID: 35856335 PMCID: PMC9394461 DOI: 10.1021/jacs.2c05303] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Indexed: 12/22/2022]
Abstract
Volatile solid additives (SADs) are considered as a simple yet effective approach to tune the film morphology for high-performance organic solar cells (OSCs). However, the structural effects of the SADs on the photovoltaic performance are still elusive. Herein, two volatilizable SADs were designed and synthesized. One is SAD1 with twisted conformation, while the other one is planar SAD2 with the S···O noncovalent intramolecular interactions (NIIs). The theoretical and experimental results revealed that the planar SAD2 with smaller space occupation can more easily insert between the Y6 molecules, which is beneficial to form a tighter intermolecular packing mode of Y6 after thermal treatment. As a result, the SAD2-treated OSCs exhibited less recombination loss, more balanced charge mobility, higher hole transfer rate, and more favorable morphology, resulting in a record power conversion efficiency (PCE) of 18.85% (certified PCE: 18.7%) for single-junction binary OSCs. The universality of this study shed light on understanding the conformation effects of SADs on photovoltaic performances of OSCs.
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Affiliation(s)
- Congqi Li
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaobin Gu
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Zhihao Chen
- School
of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, China
| | - Xiao Han
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Na Yu
- Center
for Advanced Low-Dimension Materials, State Key Laboratory for Modification
of Chemical Fibers and Polymer Materials, College of Materials Science
and Engineering, Donghua University, Shanghai 201620, China
| | - Yanan Wei
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Jinhua Gao
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Hao Chen
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Meng Zhang
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Ao Wang
- College
of Polymer Science and Engineering, State Key Laboratory of Polymer
Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Jianqi Zhang
- CAS
Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center
for Excellence in Nanoscience, National Center for Nanoscience and
Technology, Beijing 100190, China
| | - Zhixiang Wei
- CAS
Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center
for Excellence in Nanoscience, National Center for Nanoscience and
Technology, Beijing 100190, China
| | - Qian Peng
- School of
Chemical Sciences, University of Chinese
Academy of Sciences, Beijing 100190, China
| | - Zheng Tang
- Center
for Advanced Low-Dimension Materials, State Key Laboratory for Modification
of Chemical Fibers and Polymer Materials, College of Materials Science
and Engineering, Donghua University, Shanghai 201620, China
| | - Xiaotao Hao
- School
of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, China
| | - Xin Zhang
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Hui Huang
- College
of Materials Science and Opto-Electronic Technology, Center of Materials
Science and Optoelectronics Engineering, CAS Center for Excellence
in Topological Quantum Computation, CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100190, China
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10
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Velusamy A, Afraj SN, Yau S, Liu C, Ezhumalai Y, Kumaresan P, Chen M. Fused thiophene based materials for organic thin‐film transistors. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Arulmozhi Velusamy
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules National Central University Taoyuan Taiwan
| | - Shakil N. Afraj
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules National Central University Taoyuan Taiwan
| | - Shuehlin Yau
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules National Central University Taoyuan Taiwan
| | - Cheng‐Liang Liu
- Department of Materials Science and Engineering National Taiwan University Taipei Taiwan
| | - Yamuna Ezhumalai
- Centre for Material Chemistry Karpagam Academy of Higher Education Coimbatore India
| | | | - Ming‐Chou Chen
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules National Central University Taoyuan Taiwan
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11
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Liang X, Wen K, Shi Q, Zhang B, Pei S, Lin Q, Ma B, Wang S, Zhang M, Li X, Wang Z, Huang H. The Aryl Sulfide Synthesis via Sulfide Transfer. Chemistry 2022; 28:e202200869. [DOI: 10.1002/chem.202200869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Xinyu Liang
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Kaikai Wen
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
- Department of Neurosurgery & Health Science Center Shenzhen Second People's Hospital The First Affiliated Hospital Shenzhen University Shenzhen 518035 P. R. China
| | - Qinqin Shi
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Bei‐Bei Zhang
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shurui Pei
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qijie Lin
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Bowei Ma
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Song Wang
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Meng Zhang
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xiang Li
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Zhi‐Xiang Wang
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Hui Huang
- College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physic University of Chinese Academy of Sciences Beijing 100049 P. R. China
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12
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Farka D, Greunz T, Yumusak C, Cobet C, Mardare CC, Stifter D, Hassel AW, Scharber MC, Sariciftci NS. Overcoming intra-molecular repulsions in PEDTT by sulphate counter-ion. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2021; 22:985-997. [PMID: 34992500 PMCID: PMC8725768 DOI: 10.1080/14686996.2021.1961311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/26/2021] [Accepted: 07/18/2021] [Indexed: 06/14/2023]
Abstract
We set out to demonstrate the development of a highly conductive polymer based on poly-(3,4-ethylenedithia thiophene) (PEDTT), PEDOTs structural analogue historically notorious for structural disorder and limited conductivities. The caveat therein was previously described to lie in intra-molecular repulsions. We demonstrate how a tremendous >2600-fold improvement in conductivity and metallic features, such as magnetoconductivity can be achieved. This is achieved through a careful choice of the counter-ion (sulphate) and the use of oxidative chemical vapour deposition (oCVD). It is shown that high structural order on the molecular level was established and the formation of crystallites tens of nanometres in size was achieved. We infer that the sulphate ions therein intercalate between the polymer chains, thus forming densely packed crystals of planar molecules with extended π-systems. Consequently, room-temperature conductivities of above 1000 S cm-1 are achieved, challenging those of conventional PEDOT:PSS. The material is in the critical regime of the metal-insulator transition.
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Affiliation(s)
- Dominik Farka
- Linz Institute for Organic Solar Cells (LIOS) Physical Chemistry, Johannes Kepler University Linz, Linz, Austria
- Institute of Solid State Physics, Johannes Kepler University-Linz, Linz, Austria
- Institute of Chemical Technology of Inorganic Materials (TIM), Johannes Kepler University Linz, Linz, Austria
| | - Theresia Greunz
- Center for Surface and Nanoanalytics (ZONA), Johannes Kepler University Linz, Linz, Austria
| | - Cigdem Yumusak
- Linz Institute for Organic Solar Cells (LIOS) Physical Chemistry, Johannes Kepler University Linz, Linz, Austria
| | - Christoph Cobet
- Linz School of Education, Johannes Kepler University Linz, Linz, Austria
| | - Cezarina Cela Mardare
- Institute of Chemical Technology of Inorganic Materials (TIM), Johannes Kepler University Linz, Linz, Austria
- Center of Chemistry and Physics of Materials, Faculty of Medicine/Dental Medicine, Danube Private University, Krems, Austria
| | - David Stifter
- Center for Surface and Nanoanalytics (ZONA), Johannes Kepler University Linz, Linz, Austria
| | - Achim Walter Hassel
- Institute of Chemical Technology of Inorganic Materials (TIM), Johannes Kepler University Linz, Linz, Austria
- Christian Doppler Laboratory for Combinatorial Oxide Chemistry (COMBOX), The Institute of Chemical Technology of Inorganic Materials (TIM), Johannes Kepler University Linz, Linz, Austria
| | - Markus C. Scharber
- Linz Institute for Organic Solar Cells (LIOS) Physical Chemistry, Johannes Kepler University Linz, Linz, Austria
| | - Niyazi Serdar Sariciftci
- Linz Institute for Organic Solar Cells (LIOS) Physical Chemistry, Johannes Kepler University Linz, Linz, Austria
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13
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Lin PS, Shoji Y, Afraj SN, Ueda M, Lin CH, Inagaki S, Endo T, Tung SH, Chen MC, Liu CL, Higashihara T. Controlled Synthesis of Poly[(3-alkylthio)thiophene]s and Their Application to Organic Field-Effect Transistors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:31898-31909. [PMID: 34190528 DOI: 10.1021/acsami.1c04404] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Regioregular polythiophenes have been widely used in organic electronic applications due to their solution processability with chemical modification through side chain engineering, as well as their microstructural organization and good hole transport properties. Here, we introduce alkylthio side chains, (poly[(3-alkylthio)thiophene]s; P3ATTs), with strong noncovalent sulfur molecular interactions, to main chain thienyl backbones. These P3ATTs were compared with alkyl-substituted polythiophene (poly(3-alkylthiophene); P3AT) variants such that the effects of straight (hexyl and decyl) and branched (2-ethylhexyl) side chains (with and without S atoms) on their thin-film morphologies and crystalline states could be investigated. P3ATTs with linear alkylthio side chains (P3HTT, hexylthio; P3DTT, decylthio) did not attain the expected higher organic field-effect transistor (OFET) mobilities with respect to P3HT (hexyl) and P3DT (decyl) mainly due to their lower regioregularity (76-78%), although P3ATTs exhibit an enhanced tendency for aggregation and compact molecular packing, as indicated by the red-shifting of the absorption spectra and the shortening of the π-π stacking distance, respectively. Moreover, the loss of regioregularity issue can be solved by introducing more soluble 2-ethylhexylthio branched side chains to form poly[3-(2-ethylhexylthio)thiophene] (P3EHTT), which provides enhanced crystallinity and efficient charge mobility (increased by up to a factor of 3) with respect to the poly(2-ethylhexylthiophene) (P3EHT) without S atoms in the side moieties. This study demonstrates that the presence of side chain alkylthio structural motifs with nonbonded interactions in polythiophene semiconductors has a beneficial impact on the molecular conformation, morphologies, structural packing, and charge transport in OFET devices.
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Affiliation(s)
- Po-Shen Lin
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yamato Shoji
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shakil N Afraj
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan 32001, Taiwan
| | - Mitsuru Ueda
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Ching-Hsuan Lin
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan 32001, Taiwan
| | - Shin Inagaki
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Taiki Endo
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shih-Huang Tung
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ming-Chou Chen
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan 32001, Taiwan
| | - Cheng-Liang Liu
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Tomoya Higashihara
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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14
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Lin CC, Afraj SN, Velusamy A, Yu PC, Cho CH, Chen J, Li YH, Lee GH, Tung SH, Liu CL, Chen MC, Facchetti A. A Solution Processable Dithioalkyl Dithienothiophene (DSDTT) Based Small Molecule and Its Blends for High Performance Organic Field Effect Transistors. ACS NANO 2021; 15:727-738. [PMID: 33253536 DOI: 10.1021/acsnano.0c07003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The 3,5-dithiooctyl dithienothiophene based small molecular semiconductor DDTT-DSDTT (1), end functionalized with fused dithienothiophene (DTT) units, was synthesized and characterized for organic field effect transistors (OFET). The thermal, optical, electrochemical, and computed electronic structural properties of 1 were investigated and contrasted. The single crystal structure of 1 reveals the presence of intramolecular locks between S(alkyl)···S(thiophene), with a very short S-S distance of 3.10 Å, and a planar core. When measured in an OFET device compound 1 exhibits a hole mobility of 3.19 cm2 V-1 s-1, when the semiconductor layer is processed by a solution-shearing deposition method and using environmentally acceptable anisole as the solvent. This is the highest value reported to date for an all-thiophene based molecular semiconductor. In addition, solution-processed small molecule/insulating polymer (1/PαMS) blend films and devices were investigated. Morphological analysis reveals a nanoscopic vertical phase separation with the PαMS layer preferentially contacting the dielectric and 1 located on top of the stack. The OFET based on the blend comprising 50% weight of 1 exhibits a hole mobility of 2.44 cm2 V-1 s-1 and a very smaller threshold voltage shift under gate bias stress.
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Affiliation(s)
- Chia-Chi Lin
- Department of Chemical and Materials Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Shakil N Afraj
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Arulmozhi Velusamy
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Po-Chun Yu
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Chang-Hui Cho
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Jianhua Chen
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Yi-Hsien Li
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
| | - Shih-Huang Tung
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Cheng-Liang Liu
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ming-Chou Chen
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan
| | - Antonio Facchetti
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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15
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Isoindigo (IID)‐Based Semiconductor with F⋯S Interaction Locked Conformation for High‐Performance Ambipolar Bottom‐Gate Top‐Contact Field‐Effect Transistors. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Okamoto T, Mitani M, Yu CP, Mitsui C, Yamagishi M, Ishii H, Watanabe G, Kumagai S, Hashizume D, Tanaka S, Yano M, Kushida T, Sato H, Sugimoto K, Kato T, Takeya J. Alkyl-Substituted Selenium-Bridged V-Shaped Organic Semiconductors Exhibiting High Hole Mobility and Unusual Aggregation Behavior. J Am Chem Soc 2020; 142:14974-14984. [PMID: 32812421 DOI: 10.1021/jacs.0c05522] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Toward the development of high-performance organic semiconductors (OSCs), carrier mobility is the most important requirement for next-generation OSC-based electronics. The strategy is that OSCs consisting of a highly extended π-electron core exhibit two-dimensional (2D) aggregated structures to offer effective charge transport. However, such OSCs, in general, show poor solubility in common organic solvents, resulting in limited solution processability. This is a critical trade-off between the development of OSCs with simultaneous high carrier mobility and suitable solubility. To address this issue, herein, five-membered ring-fused selenium-bridged V-shaped binaphthalene with decyl substituents (C10-DNS-VW) is developed and synthesized by an efficient method. C10-DNS-VW exhibits significantly high solubility for solution processes. Notably, C10-DNS-VW forms a one-dimensional π-stacked packing motif (1D motif) and a 2D herringbone (HB) packing motif (2D motif), depending on the crystal growth condition. On the other hand, the fabrication of thin films by means of both solution process and vacuum deposition techniques forms only the 2D HB motif. External stress tests such as heating and exposure to solvent vapor indicated that 1D and 2D motifs could be synergistically induced by the total balance of intermolecular interactions. Finally, the single-crystalline films of C10-DNS-VW by solution process exhibit carrier mobility up to 11 cm2 V-1 s-1 with suitable transistor stability under ambient conditions for more than two months, indicating that C10-DNS-VW is one of the most promising candidates for breaking the trade-off in the field of solution-processed technologies.
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Affiliation(s)
- Toshihiro Okamoto
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.,National Institute of Advanced Industrial Science and Technology (AIST)-University of Tokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), AIST, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.,PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Masato Mitani
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Craig P Yu
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Chikahiko Mitsui
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Masakazu Yamagishi
- National Institute of Technology, Toyama College, 13 Hongo-machi, Toyama, Toyama 939-8630, Japan
| | - Hiroyuki Ishii
- Department of Applied Physics, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Go Watanabe
- Department of Physics, School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Shohei Kumagai
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Daisuke Hashizume
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Shota Tanaka
- Chemistry, Materials and Bioengineering Major, Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Masafumi Yano
- Chemistry, Materials and Bioengineering Major, Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Tomokatsu Kushida
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Hiroyasu Sato
- Rigaku Corp., 3-9-12 Matsubara-cho, Akishima, Tokyo 196-8666, Japan
| | - Kunihisa Sugimoto
- Diffraction & Scattering Division, Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan.,Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
| | - Takashi Kato
- Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Jun Takeya
- Material Innovation Research Center (MIRC) and Department of Advanced Materials Science, School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.,National Institute of Advanced Industrial Science and Technology (AIST)-University of Tokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), AIST, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.,International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba 205-0044, Japan
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17
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Vegiraju S, Amelenan Torimtubun AA, Lin PS, Tsai HC, Lien WC, Chen CS, He GY, Lin CY, Zheng D, Huang YF, Wu YC, Yau SL, Lee GH, Tung SH, Wang CL, Liu CL, Chen MC, Facchetti A. Solution-Processable Quinoidal Dithioalkylterthiophene-Based Small Molecules Pseudo-Pentathienoacenes via an Intramolecular S···S Lock for High-Performance n-Type Organic Field-Effect Transistors. ACS APPLIED MATERIALS & INTERFACES 2020; 12:25081-25091. [PMID: 32340439 DOI: 10.1021/acsami.0c03477] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A new organic small-molecule family comprising tetracyanoquinodimethane-substituted quinoidal dithioalky(SR)terthiophenes (DSTQs) (DSTQ-6 (1); SR = SC6H13, DSTQ-10 (2); SR = SC10H21, DSTQ-14 (3); SR = SC10H21) was synthesized and contrasted with a nonthioalkylated analogue (DRTQ-14 (4); R = C14H29). The physical, electrochemical, and electrical properties of these new compounds are thoroughly investigated. Optimized geometries obtained from density functional theory calculations and single-crystal X-ray diffraction reveal the planarity of the SR-containing DSTQ core. DSTQs pack in a slipped π-π stacked two-dimensional arrangement, with a short intermolecular stacking distance of 3.55 Å and short intermolecular S···N contacts of 3.56 Å. Thin-film morphological analysis by grazing incident X-ray diffraction reveals that all DSTQ molecules are packed in an edge-on fashion on the substrate. The favorable molecular packing, the high core planarity, and very low lowest unoccupied molecular orbital (LUMO) energy level (-4.2 eV) suggest that DSTQs could be electron-transporting semiconductors. Organic field-effect transistors based on solution-sheared DSTQ-14 exhibit the highest electron mobility of 0.77 cm2 V-1 s-1 with good ambient stability, which is the highest value reported to date for such a solution process terthiophene-based small molecular semiconductor. These results demonstrate that the device performance of solution-sheared DSTQs can be improved by side chain engineering.
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Affiliation(s)
- Sureshraju Vegiraju
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Alfonsina Abat Amelenan Torimtubun
- Department of Chemical and Materials Engineering and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Po-Shen Lin
- Department of Chemical and Materials Engineering and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Hsin-Chia Tsai
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Wei-Chieh Lien
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Cheng-Shiun Chen
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Guan-Yu He
- Department of Chemical and Materials Engineering and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Chih-Yu Lin
- Department of Chemical and Materials Engineering and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Ding Zheng
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Yi-Fan Huang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Yi-Ching Wu
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Shueh-Lin Yau
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
| | - Shih-Huang Tung
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chien-Lung Wang
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Cheng-Liang Liu
- Department of Chemical and Materials Engineering and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Ming-Chou Chen
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Module, National Central University, Taoyuan 32001, Taiwan
| | - Antonio Facchetti
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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18
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Ezhumalai Y, Lin FS, Fan MS, Prabakaran K, Ni JS, Wu YC, Lee GH, Chen MC, Ho KC. Thioalkyl-Functionalized Bithiophene (SBT)-Based Organic Sensitizers for High-Performance Dye-Sensitized Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:15071-15079. [PMID: 32182036 DOI: 10.1021/acsami.9b21955] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A series of 3,3'-dithioalkyl-2,2'-bithiophene (SBT)-based organic chromophores were designed and developed for the use in dye-sensitized solar cells (DSSCs). By appropriate structural modification of the SBT π-linkers with different alkyl chains and conjugated thiophene units, chromophore aggregation and interfacial charge recombination could be suppressed to a remarkable degree. Single-crystal and optical/electrochemical data clearly show that the SBT core is nearly planar with the torsional angle <1°, likely via S(alkyl)···S(thiophene) intramolecular locks. Therefore, this highly π-conjugated unit should enhance panchromatic light-harvesting and prove to be an excellent core for organic dye. For comparison, the 3,3'-dialkyl-2,2'-bithiophene (BT)-based dye was also prepared. Under 1 sun (100 mW cm-2) illumination, an optimized SBT-6 dye-sensitized cell indicates a short-circuit current density (JSC) of 17.21 mA cm-2, an open-circuit voltage (VOC) of 0.78 V, and a fill factor (FF) of 0.71, corresponding to a power conversion efficiency (η) of 9.47%, which is nearly two times higher than that of alkylated bithiophene (BT)-based chromophores. Finally, the proposed sensitizer SBT-6 exhibited an excellent η of 23.57% under the T5 fluorescent illumination of 6000 lux. To the best of our knowledge, this is the highest power conversion efficiencies (PCE) value reported to date among the studied thiophene or bithiophene-based chromophores.
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Affiliation(s)
- Yamuna Ezhumalai
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan 32001, Taiwan
- Department of Chemistry, Karpagam Academy of Higher Education, Coimbatore 641021, India
| | | | | | - Kumaresan Prabakaran
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan 32001, Taiwan
- Department of Chemistry, PSG College of Arts and Science, Coimbatore 641014, India
| | - Jen-Shyang Ni
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan 32001, Taiwan
| | - Yi-Ching Wu
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan 32001, Taiwan
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
| | - Ming-Chou Chen
- Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan 32001, Taiwan
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19
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Ultraviolet Photodetecting and Plasmon-to-Electric Conversion of Controlled Inkjet-Printing Thin-Film Transistors. NANOMATERIALS 2020; 10:nano10030458. [PMID: 32143384 PMCID: PMC7153598 DOI: 10.3390/nano10030458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 02/26/2020] [Accepted: 03/02/2020] [Indexed: 11/17/2022]
Abstract
Direct ink-jet printing of a zinc-oxide-based thin-film transistor (ZnO-based TFT) with a three-dimensional (3-D) channel structure was demonstrated for ultraviolet light (UV) and visible light photodetection. Here, we demonstrated the channel structures by which temperature-induced Marangoni flow can be used to narrow the channel width from 318.9 ± 44.1 μm to 180.1 ± 13.9 μm via a temperature gradient. Furthermore, a simple and efficient oxygen plasma treatment was used to enhance the electrical characteristics of switching ION/IOFF ratio of approximately 105. Therefore, the stable and excellent gate bias-controlled photo-transistors were fabricated and characterized in detail for ultraviolet (UV) and visible light sensing. The photodetector exhibited a superior photoresponse with a significant increase of more than 2 orders of magnitude larger drain current generated upon UV illumination. The results could be useful for the development of UV photodetectors by the direct-patterning ink-jet printing technique. Additionally, we also have successfully demonstrated that a metal-semiconductor junction structure that enables plasmon energy detection by using the plasmonic effects is an efficient conversion of plasmon energy to an electrical signal. The device showed a significant variations negative shift of threshold voltage under different light power density with exposure of visible light. With the ZnO-based TFTs, only ultraviolet light detection extends to the visible light wavelength.
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Li Y, Zheng N, Yu L, Wen S, Gao C, Sun M, Yang R. A Simple Phenyl Group Introduced at the Tail of Alkyl Side Chains of Small Molecular Acceptors: New Strategy to Balance the Crystallinity of Acceptors and Miscibility of Bulk Heterojunction Enabling Highly Efficient Organic Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1807832. [PMID: 30706603 DOI: 10.1002/adma.201807832] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 01/16/2019] [Indexed: 05/20/2023]
Abstract
Research on fused-ring small-molecular-acceptors (SMAs) has deeply advanced the development of organic solar cells (OSCs). Compared to fruitful studies of ladder-type cores and end-caps of SMAs, the exploration of side chains is monotonous. The widely utilized alkyl and aryl side chains usually produce a conflicting association between SMAs' crystallinity and miscibility. Herein, a fresh idea about the modification of side chains is reported to explore the subtle balance between the crystallinity and miscibility. Specifically, a phenyl is introduced to the tail of the alkyl side chain whereby a new acceptor IDIC-C4Ph is reported. Moderately weakened crystallinity is observed, while maintaining preferred absorption profiles and face-on orientations. Concurrently, remarkably improved heterojunction morphologies and stacking orientations are detected. PBDB-T:IDIC-C4Ph devices exhibit greater efficiency of 11.50% than devices from alky and aryl modified acceptors. Notably, the as-cast OSCs of PBDB-TF:IDIC-C4Ph reveal outstanding FF over 76% with the best efficiency up to 13.23%. The annealed devices reveal further increased efficiency exceeding 14% with the state of the art FF of 78.32%. Overall, an effective but easily navigable approach is demonstrated to modulate the crystallinity of SMAs toward synergistically improved morphologies and molecular orientations of bulk heterojunction enabling highly efficient OSCs.
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Affiliation(s)
- Yonghai Li
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Nan Zheng
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China
| | - Lu Yu
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
- Institute of Material Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Shuguang Wen
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Chenglin Gao
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Mingliang Sun
- Institute of Material Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Renqiang Yang
- CAS Key Laboratory of Bio-Based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
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Johnson SN, Ellington TL, Ngo DT, Nevarez JL, Sparks N, Rheingold AL, Watkins DL, Tschumper GS. Probing non-covalent interactions driving molecular assembly in organo-electronic building blocks. CrystEngComm 2019. [DOI: 10.1039/c9ce00219g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One co-crystal structure characterized to identify and quantify various non-covalent interactions with spectroscopy, X-ray crystallography and density functional theory computations.
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Affiliation(s)
- Sarah N. Johnson
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | - Thomas L. Ellington
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | - Duong T. Ngo
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | - Jorge L. Nevarez
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | - Nicholas Sparks
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | | | - Davita L. Watkins
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
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Guo C, Gao X, Lin FJ, Wang Q, Meng L, Bian R, Sun Y, Jiang L, Liu H. In Situ Characterization of the Triphase Contact Line in a Brush-Coating Process: Toward the Enhanced Efficiency of Polymer Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:39448-39454. [PMID: 30394083 DOI: 10.1021/acsami.8b15746] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Solution processes have been widely used for making polymer films in organic photoelectric devices but suffer from difficulties in controlling the film formation. Here, by in situ characterization triphase contact lines (TCLs) in a brush-coating process, we clarify how TCLs affect the quality of as-prepared films. By fine-tuning the dewetting of a binary polymer solution (P3HT:PCBM) via different directions, TCLs with different patterns lead to films with different morphologies. High-quality nanothin films with larger crystallized sizes and higher orientations were enabled when TCLs were parallel to the brush edge, based on which the polymer solar cell shows higher power conversion efficiency (2.665%) compared with that of the spin-coated film.
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Affiliation(s)
- Cheng Guo
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
| | - Xiaoyu Gao
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
| | - Fang-Ju Lin
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
- Institute of Chemistry , Academia Sinica , No. 128, Section 2, Academia Road , Nangang District, Taipei City 115 , Taiwan
| | - Qianbin Wang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
| | - Lili Meng
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
| | - Ruixin Bian
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
| | - Yanming Sun
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
| | - Lei Jiang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
| | - Huan Liu
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry , Beihang University , No. 37 Xueyuan Road , Haidian District, Beijing 100191 , P. R. China
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Li H, Brédas JL. Quasi-One-Dimensional Charge Transport Can Lead to Nonlinear Current Characteristics in Organic Field-Effect Transistors. J Phys Chem Lett 2018; 9:6550-6555. [PMID: 30380867 DOI: 10.1021/acs.jpclett.8b02972] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nonlinearity in the current characteristics of organic field-effect transistor (OFET) devices has become a serious issue for accurate evaluation of the charge-carrier mobilities in organic semiconductors. In particular, in the case of several high-mobility materials, a kink appears in the transfer curves, and this nonlinearity has been generally interpreted as the result of poor contacts. Here, we describe another possible origin for the appearance of such a kink. Extensive molecular-scale device simulations indeed demonstrate that the quasi-1D nature of charge transport often encountered in organic crystals or highly oriented polymers can lead to significant transport through the bulk and result in nonlinearity of the transfer current characteristics if the actual charge injection is away from the channel. When this is the case, the low-gate voltage regime in fact does not overestimate the charge mobility along the channel direction.
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Affiliation(s)
- Haoyuan Li
- School of Chemistry and Biochemistry, Center for Organic Photonics and Electronics (COPE) , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
| | - Jean-Luc Brédas
- School of Chemistry and Biochemistry, Center for Organic Photonics and Electronics (COPE) , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
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Yu S, Peng A, Zhang S, Huang H. Noncovalent conformational locks in organic semiconductors. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9315-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Liao Q, Wang Y, Uddin MA, Chen J, Guo H, Shi S, Wang Y, Woo HY, Guo X. Drastic Effects of Fluorination on Backbone Conformation of Head-to-Head Bithiophene-Based Polymer Semiconductors. ACS Macro Lett 2018; 7:519-524. [PMID: 35632924 DOI: 10.1021/acsmacrolett.8b00032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This study shows that the backbone conformation of head-to-head type 3,3'-dialkyl-2,2'-bithiophene can be tuned via fluorination of the neighboring benzothiadiazole (BTz). Without fluorination, the polymer backbone is highly twisted, whereas difluorination of BTz produced a coplanar backbone. Monofluorination of BTz yielded a tunable polymer backbone conformation depending on the film annealing temperature. In organic thin-film transistors, the polymer with the head-to-head linkages showed a remarkable hole mobility of >0.5 cm2 V-1 s-1 upon attaining a planar backbone. Thus, the head-to-head linkage does not necessarily lead to backbone nonplanarity, and achieving planar conformation of 3,3'-dialkyl-2,2'-bithiophene has profound implications in materials design for organic semiconducting devices, yielding good solubility, reduced materials synthetic steps, and improved opto-electrical properties.
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Affiliation(s)
- Qiaogan Liao
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China (SUSTC), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Yulun Wang
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China (SUSTC), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | | | - Jianhua Chen
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China (SUSTC), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Han Guo
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China (SUSTC), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Shengbin Shi
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China (SUSTC), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Yang Wang
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China (SUSTC), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
| | - Han Young Woo
- Department of Chemistry, Korea University, Seoul 136-713, South Korea
| | - Xugang Guo
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics, South University of Science and Technology of China (SUSTC), No. 1088, Xueyuan Road, Shenzhen, Guangdong 518055, China
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