1
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Kar MR, Sahoo K, Mohapatra A, Bhaumik S. Stable and luminescent cesium copper halide nanocrystals embedded in flexible polymer fibers for fabrication of down-converting WLEDs. NANOSCALE ADVANCES 2023; 5:6238-6248. [PMID: 37941958 PMCID: PMC10629056 DOI: 10.1039/d3na00440f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/06/2023] [Indexed: 11/10/2023]
Abstract
Recently, CsPbX3 (X = I, Br, Cl) perovskite nanocrystals (NCs) have drawn wide attention owing to their outstanding photophysical and optoelectronic properties. However, the toxicity of such NCs remained a big challenge for further commercialization. Herein, we adopt facile methods for synthesizing green-emissive Cs3Cu2Cl5 and blue-emissive Cs3Cu2Br2.5I2.5 perovskite NCs that exhibit broad emission spectra with large Stokes shifts. These NCs showed photoluminescence quantum yields (PLQY) up to 65% (Cs3Cu2Cl5 NCs) and 32% (Cs3Cu2Br2.5I2.5 NCs) with limited stabilities. To further improve the stability, the NCs were blended with a hydrophobic polymer poly-methylmethacrylate (PMMA) and embedded inside the polymer fiber by an electrospinning process to form composite fibers. The as-prepared Cs3Cu2Cl5@PMMA and Cs3Cu2Br2.5I2.5@PMMA fiber films demonstrated good surface coverage and better thermal stability, and even retained their emission properties when dispersed in water. The emissive fibers were also deposited on flexible polyethylene terephthalate (PET) substrates that displayed high resistance towards bending and twisting with no signs of breakage, damage, or loss of optical properties. Finally, UV-pumped phosphor-converted WLEDs fabricated by using these blue and green-emitting fibers revealed CIE chromaticity coordinates at (0.27, 0.33) with a maximum luminous efficiency of 69 Lm W-1 and correlated color temperature (CCT) value of 8703 K. These outcomes can be beneficial for the development of futuristic flexible display technologies.
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Affiliation(s)
- Manav Raj Kar
- Department of Engineering and Materials Physics, Institute of Chemical Technology-IndianOil Odisha Campus Bhubaneswar 751013 India
| | - Kajol Sahoo
- Department of Engineering and Materials Physics, Institute of Chemical Technology-IndianOil Odisha Campus Bhubaneswar 751013 India
| | - Ashutosh Mohapatra
- Department of Engineering and Materials Physics, Institute of Chemical Technology-IndianOil Odisha Campus Bhubaneswar 751013 India
| | - Saikat Bhaumik
- Department of Engineering and Materials Physics, Institute of Chemical Technology-IndianOil Odisha Campus Bhubaneswar 751013 India
- Department of Physics, Indian Institute of Technology Guwahati Assam 781039 India
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2
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Influence of Electrospinning Setup Parameters on Properties of Polymer-Perovskite Nanofibers. Polymers (Basel) 2023; 15:polym15030731. [PMID: 36772031 PMCID: PMC9920078 DOI: 10.3390/polym15030731] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/28/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Optimizing the properties of electrospun polymer-perovskite nanofibers is considered essential for improving the performance of flexible optoelectronic devices. Here, the influence of electrospinning setup parameters (i.e., electrical voltage, collector type (planar or rotary), rotation speed, as well as process time) on the properties (i.e., external structure, perovskite crystallinity, optical properties, thermal properties, the shrinkage ratio, mechanical properties, and long-term stability) of electrospun polyvinylpyrrolidone nanofibers modified with cesium lead iodide nanocrystals has been studied. The results have shown that the structure of nanofibers is related to the electrical voltage, collector rotation speed, and process duration. Perovskite crystallinity and light absorption have improved by increasing the electrical voltage or/and the process time. The polymer's glass transition temperature is affected by the embedded perovskite and the collector's rotation speed. The shrinkage ratio and mechanical properties of nanofibers have been controlled by the rotation speed and the electrical voltage. The shrinkage is caused by the stress created in the nanofibers during the electrospinning process. The best mechanical properties can be noticed with the rotary collector at a rotational speed of 500--750 rpm. Nanofibers have shown good long-term stability and high thermal stability. The long-term stability is inversely proportional to the value of the electrical voltage.
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3
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Sanjeev Kumar, Jain G, Kumar K, Singh BP, Dhakate SR. A Review on Polymeric Photoluminiscent Nanofibers: Inorganic, Organic and Perovskites Additives for Solid-State Lighting Application. POLYMER SCIENCE SERIES A 2022. [DOI: 10.1134/s0965545x22700213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Wang XD, Song Y, Pei WY, Ma JF. Single-Component White Light Emission from a Metal-Coordinated Cyclotriveratrylene-Based Coordination Polymer. Inorg Chem 2022; 61:10768-10773. [PMID: 35786953 DOI: 10.1021/acs.inorgchem.2c00974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A coordination polymer, namely, [Cd3L(H2O)3]·DMA·4H2O (1) (DMA = N,N-dimethylacetamide), was prepared by the solvothermal reaction of cyclotriveratrylene-based ligand 5,6,12,13,19,20-hexacarboxy-methoxy-cyclotriveratrylene (H6L) and Cd(NO3)2·4H2O. In 1, a two-dimensional structure was constructed by the connection of hexanuclear Cd-O clusters and L6- anions. Photoluminescence measurements indicated that 1 displayed tunable photoluminescence through the variation of the excitation wavelength. Significantly, the white light emission of 1 can be observed with a broad excitation wavelength range from 320 to 385 nm. When 1 is excited by 385 nm light, its chromatic coordinate is (0.29, 0.34), which is located very close to the pure white light region (0.33, 0.33). Meanwhile, the color temperature (CCT) is 7994 K, which corresponds well to "cold" white light.
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Affiliation(s)
- Xiao-Dan Wang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yuting Song
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Wen-Yuan Pei
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Jian-Fang Ma
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, China
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5
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Cheng R, Liang Z, Zhu L, Li H, Zhang Y, Wang C, Chen S. Fibrous Nanoreactors from Microfluidic Blow Spinning for Mass Production of Highly Stable Ligand‐Free Perovskite Quantum Dots. Angew Chem Int Ed Engl 2022; 61:e202204371. [DOI: 10.1002/anie.202204371] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Indexed: 12/13/2022]
Affiliation(s)
- Rui Cheng
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, and Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 China
| | - Zhi‐Bin Liang
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, and Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 China
| | - Liangliang Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, and Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 China
| | - Hao Li
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, and Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 China
| | - Yi Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, and Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 China
| | - Cai‐Feng Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, and Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 China
| | - Su Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, and Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials Nanjing Tech University Nanjing 210009 China
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6
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Zhao S, Sun J, Qin Z, Li Y, Yu H, Wang G, Gu X, Pan K. Janus-Structural AIE Nanofiber with White Light Emission and Stimuli-Response. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201117. [PMID: 35585675 DOI: 10.1002/smll.202201117] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/28/2022] [Indexed: 06/15/2023]
Abstract
White-light emitting elastomers (WLEEs) based on stimuli-responsive aggregation-induced emission (AIE) and regulated Förster resonance energy transfer (FRET) have aroused increasing attention due to the demands for wearable optoelectronic devices. Herein, the blue and orange AIEgens with different environmental sensitivities are synthesized and then encapsulated on both sides of nanofibers via side-by-side electrospinning aiming to achieve the Janus WLEEs. After regulating the blue-orange AIEgens ratio, efficient and stable white light emission with a CIE coordinate of about (0.33, 0.31) is achieved at a blue-orange AIEgens mass ratio of 3:1. Besides, the Janus nanofibers (Janus-NFs) also present super stretchability with elongation at the break over 150% and tensile strength close to 7 MPa. The sensitivity of fluorescence for Janus-NFs to its stretching deformation is used to visualize the evolution of the microstructure of nanofibers during stretching. Moreover, the Janus-NFs are also sensitive to HCl and NH3 , of which the fluorescence color would change under HCl and NH3 fuming above 2 and 57 ppm in air, respectively. The promising applications of the white light Janus-NFs in smart fabrics, warning sensors, and anti-counterfeiting packaging are demonstrated. This finding provides an efficient strategy for achieving wearable WLEEs with multiple functionalities, promoting the development of wearable devices.
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Affiliation(s)
- Shikun Zhao
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jiangman Sun
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zhen Qin
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yufeng Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Hao Yu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Guan Wang
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xinggui Gu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Kai Pan
- Beijing Key Laboratory of Advanced Functional Polymer Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
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7
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Zhao Z, Liu K, Liu Y, Guo Y, Liu Y. Intrinsically flexible displays: key materials and devices. Natl Sci Rev 2022; 9:nwac090. [PMID: 35711242 PMCID: PMC9197576 DOI: 10.1093/nsr/nwac090] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 03/17/2022] [Accepted: 03/17/2022] [Indexed: 11/14/2022] Open
Abstract
Continuous progress in flexible electronics is bringing more convenience and comfort to human lives. In this field, interconnection and novel display applications are acknowledged as important future directions. However, it is a huge scientific and technical challenge to develop intrinsically flexible displays due to the limited size and shape of the display panel. To address this conundrum, it is crucial to develop intrinsically flexible electrode materials, semiconductor materials and dielectric materials, as well as the relevant flexible transistor drivers and display panels. In this review, we focus on the recent progress in this field from seven aspects: background and concept, intrinsically flexible electrode materials, intrinsically flexible organic semiconductors and dielectric materials for organic thin film transistors (OTFTs), intrinsically flexible organic emissive semiconductors for electroluminescent devices, and OTFT-driven electroluminescent devices for intrinsically flexible displays. Finally, some suggestions and prospects for the future development of intrinsically flexible displays are proposed.
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Affiliation(s)
- Zhiyuan Zhao
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Kai Liu
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Yanwei Liu
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Yunlong Guo
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Yunqi Liu
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China
- University of Chinese Academy of Sciences, Beijing100049, China
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8
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Cheng R, Liang ZB, Zhu L, Li H, Zhang Y, Wang CF, Chen S. Fibrous Nanoreactors from Microfluidic Blow Spinning for Mass Production of Highly Stable Ligand‐Free Perovskite Quantum Dots. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rui Cheng
- Nanjing Tech University College of Chemical Engineering CHINA
| | - Zhi-Bin Liang
- Nanjing Tech University College of Chemical Engineering CHINA
| | - Liangliang Zhu
- Nanjing Tech University College of Chemical Engineering CHINA
| | - Hao Li
- Nanjing Tech University College of Chemical Engineering CHINA
| | - Yi Zhang
- Nanjing Tech University College of Chemical Engineering CHINA
| | - Cai-Feng Wang
- Nanjing Tech University College of Chemical Engineering CHINA
| | - Su Chen
- Nanjing Tech University College of Chemistry and Chemical Engineering 5 Xin Mofan Road 210009 Nanjing CHINA
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9
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Carrizo AF, Belmonte GK, Santos FS, Backes CW, B Strapasson G, Schmidt LC, Rodembusch FS, Weibel DE. Highly Water-Stable Polymer-Perovskite Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2021; 13:59252-59262. [PMID: 34851611 DOI: 10.1021/acsami.1c17594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The excellent performance of hybrid metal-halide perovskite nanocrystals (NCs) contrasts with their unsatisfactory stability in a high-humidity environment or water. Herein, polymer composite lead-halide perovskites (LHPs) NCs were prepared by casting or spin-coating to produce a high fluorescence yield and a fully water-resistant material. Poly(l-lactide) (PLla), polypropylene glycol (PPGly), and polysulfone (PSU) commercial polymers were used to prepare suspensions of MAPbBr3-HDA NCs (MA: CH3NH3; HDA: hexadecylamine). The MAPbBr3-HDA@PLla suspension exhibited a maximum fluorescence quantum yield of 93% compared to 43% for the pristine MAPbBr3-HDA NCs. Strong emissions around 528 nm were also observed, with the same full width at half maximum value of 20 nm, demonstrating the successful fabrication of brightly luminescent LHP NCs@polymer combinations. Time-resolved photoluminescence measurements directly observed the enhanced spontaneous emission of the NCs induced by the polymeric environment. However, the cast films of MAPbBr3-HDA NCs mixed with PLla or PPGly did not resist water immersion. On the contrary, MAPbBr3-HDA@PPGly/PSU films containing well-dispersed ∼10 nm LHP NCs retained a bright green fluorescence emission even after 18 months under air conditions or water immersion up to 45 °C. From water contact angle measurements, profilometry, and X-ray photoelectron spectroscopy data, it could be assumed that the slightly hydrophobic PSU polymer is responsible for the high water stability of the fluorescent films, which avoids MAPbBr3-HDA NC degradation. This work shows that the LHP NC dispersion in dissolved commodity polymers holds great promise toward the long-term stability of LHP NC composites for the future development of wearable electronic devices and other waterproof applications.
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Affiliation(s)
- Antonella Florencia Carrizo
- Facultad de Ciencias Químicas, Departamento de Química Orgánica, Universidad Nacional de Córdoba, Av. Haya de la Torre s/n, X5000HUA Córdoba, Argentina
| | - Guilherme K Belmonte
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves, 9500, Bairro Agronomia, CP 15003, CEP: 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Fabiano S Santos
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves, 9500, Bairro Agronomia, CP 15003, CEP: 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Claudio W Backes
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves, 9500, Bairro Agronomia, CP 15003, CEP: 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Guilherme B Strapasson
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves, 9500, Bairro Agronomia, CP 15003, CEP: 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Luciana C Schmidt
- Facultad de Ciencias Químicas, Departamento de Química Orgánica, Universidad Nacional de Córdoba, Av. Haya de la Torre s/n, X5000HUA Córdoba, Argentina
| | - Fabiano S Rodembusch
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves, 9500, Bairro Agronomia, CP 15003, CEP: 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
| | - Daniel E Weibel
- Institute of Chemistry, Universidade Federal do Rio Grande do Sul, UFRGS, Av. Bento Gonçalves, 9500, Bairro Agronomia, CP 15003, CEP: 91501-970 Porto Alegre, Rio Grande do Sul, Brazil
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10
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Chen J, Xiang H, Wang J, Wang R, Li Y, Shan Q, Xu X, Dong Y, Wei C, Zeng H. Perovskite White Light Emitting Diodes: Progress, Challenges, and Opportunities. ACS NANO 2021; 15:17150-17174. [PMID: 34758267 DOI: 10.1021/acsnano.1c06849] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As global warming, energy shortages, and environment pollution have intensified, low-carbon and energy-saving lighting technology has attracted great attention worldwide. Light emitting diodes (LEDs) have been around for decades and are considered to be the most ideal lighting technology currently due to their high luminescence efficiency (LE) and long lifespan. Besides, along with the development of modern technology, lighting technologies with higher performance and more functions are desired. Perovskite based LEDs (PeLEDs) have recently emerged as ideal candidates for lighting technology owing to the extraordinary photoelectric properties of perovskite, such as high photoluminescence quantum yields (PLQYs), easy wavelength tuning, and low-cost synthesis. Herein, we open this review by introducing the background of white LEDs (WLEDs), including their light-emitting mechanism, typical characteristics, and key indicators in applications. Then, four main approaches to fabricate WLEDs are discussed and compared. After that, in accordance with the four categories, we focus on the recent progress of white PeLEDs (Pe-WLEDs), followed by the challenges and opportunities for Pe-WLEDs in practical application. Meanwhile, some pertinent countermeasures to their challenges are put forward. Finally, the development promise of Pe-WLEDs is explored.
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Affiliation(s)
- Jiawei Chen
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Hengyang Xiang
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jian Wang
- Department of Chemistry, University of Washington, Seattle, Washington 98195-2120, United States
| | - Run Wang
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yan Li
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qingsong Shan
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiaobao Xu
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yuhui Dong
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Changting Wei
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Haibo Zeng
- MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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11
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Jančík J, Krajcovic J, Brüggemann O, Salinas Y. Stability Enhancements on Methylammonium Lead‐Based Perovskite Nanoparticles: the Smart Use of Host Matrices. Isr J Chem 2021. [DOI: 10.1002/ijch.202100060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ján Jančík
- Faculty of Chemistry Materials Research Centre Brno University of Technology Purkyňova 118 61200 Brno Czech Republic
| | - Jozef Krajcovic
- Faculty of Chemistry Materials Research Centre Brno University of Technology Purkyňova 118 61200 Brno Czech Republic
| | - Oliver Brüggemann
- Institute of Polymer Chemistry Johannes Kepler University Linz Altenberger Straße 69 4040 Linz Austria
| | - Yolanda Salinas
- Institute of Polymer Chemistry Johannes Kepler University Linz Altenberger Straße 69 4040 Linz Austria
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12
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Ercan E, Lin Y, Chen C, Fang Y, Yang W, Yang Y, Chen W. Realizing fast photoinduced recovery with polyfluorene‐
block
‐poly
(vinylphenyl oxadiazole) block copolymers as electret in photonic transistor memory devices. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210393] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ender Ercan
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
- Advanced Research Center of Green Materials Science and Technology National Taiwan University Taipei Taiwan
| | - Yan‐Cheng Lin
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
- Advanced Research Center of Green Materials Science and Technology National Taiwan University Taipei Taiwan
| | - Chun‐Kai Chen
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Yi‐Kai Fang
- Institute of Polymer Science and Engineering National Taiwan University Taipei Taiwan
| | - Wei‐Chen Yang
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Yun‐Fang Yang
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
| | - Wen‐Chang Chen
- Department of Chemical Engineering National Taiwan University Taipei Taiwan
- Advanced Research Center of Green Materials Science and Technology National Taiwan University Taipei Taiwan
- Institute of Polymer Science and Engineering National Taiwan University Taipei Taiwan
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13
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Imran M, Mai BT, Goldoni L, Cirignano M, Jalali HB, Di Stasio F, Pellegrino T, Manna L. Switchable Anion Exchange in Polymer-Encapsulated APbX 3 Nanocrystals Delivers Stable All-Perovskite White Emitters. ACS ENERGY LETTERS 2021; 6:2844-2853. [PMID: 34423129 PMCID: PMC8369489 DOI: 10.1021/acsenergylett.1c01232] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/06/2021] [Indexed: 05/05/2023]
Abstract
We report a one-step synthesis of halide perovskite nanocrystals embedded in amphiphilic polymer (poly(acrylic acid)-block-poly(styrene), PAA-b-PS) micelles, based on injecting a dimethylformamide solution of PAA-b-PS, PbBr2, ABr (A = Cs, formamidinium, or both) and "additive" molecules in toluene. These bifunctional or trifunctional short chain organic molecules improve the nanocrystal-polymer compatibility, increasing the nanocrystal stability against polar solvents and high flux irradiation (the nanocrystals retain almost 80% of their photoluminescence after 1 h of 3.2 w/cm2 irradiation). If the nanocrystals are suspended in toluene, the coil state of the polymer allows the nanocrystals to undergo halide exchange, enabling emission color tunability. If the nanocrystals are suspended in methanol, or dried as powders, the polymer is in the globule state, and they are inert to halide exchange. By mixing three primary colors we could prepare stable, multicolor emissive samples (for example, white emitting powders) and a UV-to-white color converting layer for light-emitting diodes entirely made of perovskite nanocrystals.
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Affiliation(s)
- Muhammad Imran
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Binh T. Mai
- Nanomaterials
for Biomedical Applications, Istituto Italiano
di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Luca Goldoni
- Analytical
Chemistry Lab, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Matilde Cirignano
- Photonic
Nanomaterials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento
di Chimica e Chimica Industriale, Universitàdegli
Studi di Genova, Via
Dodecaneso 31, 16146 Genova, Italy
| | - Houman Bahmani Jalali
- Photonic
Nanomaterials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Francesco Di Stasio
- Photonic
Nanomaterials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Teresa Pellegrino
- Nanomaterials
for Biomedical Applications, Istituto Italiano
di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Liberato Manna
- Nanochemistry, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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14
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Shi S, Cao L, Gao H, Tian Z, Bi W, Geng C, Xu S. Solvent- and initiator-free fabrication of efficient and stable perovskite-polystyrene surface-patterned thin films for LED backlights. NANOSCALE 2021; 13:9381-9390. [PMID: 34002177 DOI: 10.1039/d0nr08759a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report a one-pot route for the synthesis of CsPbBr3 perovskite nanocrystals (PNCs) in styrene to form a glue-like polystyrene (PS) pre-polymer incorporating mono-dispersed PNCs. The pre-polymer enables solvent- and initiator-free fabricating and patterning PNC-PS light down-conversion films for liquid crystal display application. The mechanistic study reveals that the styrene molecules adsorbed on the PNC surface undergo self-initiated polymerization in the pre-polymerization process, forming stable surface capsulation over the PNCs. The PNC-PS pre-polymer and composite film display high photoluminescent quantum yield (PLQY) and resistance to air, light irradiation and water. The micropatterned PNC-PS film with a period of 1000 nm was fabricated through imprinting of the pre-polymer. The micropatterned thin film displays an enlarged viewing angle, improved light distribution and PLQY of >90%. The backlight employing the PNC-PS film displays bright green color and a wide color gamut of >120% NTSC. This solvent-free and one-pot strategy could find promising potential in the development of diverse luminescent nanocomposites to meet the requirements of micro/nano-manufacturing and high performance display application.
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Affiliation(s)
- Shuangshuang Shi
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin, 300401, P. R. China.
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15
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Zhou N, Jiang B, He X, Li Y, Ma Z, Zhang H, Zhang M. A Superstretchable and Ultrastable Liquid Metal-Elastomer Wire for Soft Electronic Devices. ACS APPLIED MATERIALS & INTERFACES 2021; 13:19254-19262. [PMID: 33852285 DOI: 10.1021/acsami.1c01319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
One-dimensional (1D) elastic conductors are an important component for constructing a wide range of soft electronic devices due to their small footprint, light weight, and integration ability. Here, we report the fabrication of an elastic conductive wire by employing a liquid metal (LM) and a porous thermoplastic elastomer (TPE) as building blocks. Such an LM-TPE composite wire was prepared by electrospinning of TPE microfibers and coating of a liquid metal. An additional layer of electrospun TPE microfibers was deposited on the wire for encapsulation. The porous structure of the TPE substrate that is composed of electrospun fibers can substantially improve the stretchability and electrical stability of the composite LM-TPE wire. Compared with the wire using a nonporous TPE as a substrate, the break strain of the LM-TPE wire was increased by 67% (up to ∼2300% strain). Meanwhile, the resistance increase of the wire during 1900% strain of stretching could be controlled as low as 12 times, which is much more stable than that of other LM-based 1D elastic conductors. We demonstrate that a light-emitting diode and an audio playing setup, which use the LM-TPE wire as an electrical circuit, can work with low-intensity attenuation or waveform deformation during large-strain (1000%) stretching. For a proof-of-concept application, an elastic inductance coil was made using the LM-TPE wire as building blocks, and its potential applications in strain sensing and magnetic field detection were demonstrated.
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Affiliation(s)
- Ningjing Zhou
- State Key Laboratory of Luminescent Materials & Devices, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Bofan Jiang
- State Key Laboratory of Luminescent Materials & Devices, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Xin He
- State Key Laboratory of Luminescent Materials & Devices, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yushan Li
- State Key Laboratory of Luminescent Materials & Devices, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Zhijun Ma
- State Key Laboratory of Luminescent Materials & Devices, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Hang Zhang
- Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China
| | - Mingji Zhang
- Sino-German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, China
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16
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Ma Z, Shi Z, Yang D, Li Y, Zhang F, Wang L, Chen X, Wu D, Tian Y, Zhang Y, Zhang L, Li X, Shan C. High Color-Rendering Index and Stable White Light-Emitting Diodes by Assembling Two Broadband Emissive Self-Trapped Excitons. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2001367. [PMID: 33225543 DOI: 10.1002/adma.202001367] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 08/25/2020] [Indexed: 05/06/2023]
Abstract
White light-emitting diodes (WLEDs) are promising next-generation solid-state light sources. However, the commercialization route for WLED production suffers from challenges in terms of insufficient color-rendering index (CRI), color instability, and incorporation of rare-earth elements. Herein, a new two-component strategy is developed by assembling two broadband emissive materials with self-trapped excitons (STEs) for high CRI and stable WLEDs. The strategy addresses effectively the challenging issues facing current WLEDs. Based on first-principles thermodynamic calculations, copper-based ternary halides composites, CsCu2 I3 @Cs3 Cu2 I5 , are synthesized by a facile one-step solution approach. The composites exhibit an ideal white-light emission with a cold/warm white-light tuning and a robust stability against heat, ultraviolet light, and environmental oxygen/moisture. A series of cold/warm tunable WLEDs is demonstrated with a maximum luminance of 145 cd m-2 and an external quantum efficiency of 0.15%, and a record high CRI of 91.6 is achieved, which is the highest value for lead-free WLEDs. Importantly, the fabricated device demonstrates an excellent operation stability in a continuous current mode, exhibiting a long half-lifetime of 238.5 min. The results promise the use of the hybrids of STEs-derived broadband emissive materials for high-performance WLEDs.
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Affiliation(s)
- Zhuangzhuang Ma
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Dongwen Yang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yawen Li
- State Key Laboratory of Superhard Materials, Key Laboratory of Automobile Materials of MOE and College of Materials Science and Engineering, Jilin University, Changchun, 130012, China
| | - Fei Zhang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Lintao Wang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Xu Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Di Wu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yongtao Tian
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yu Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Lijun Zhang
- State Key Laboratory of Superhard Materials, Key Laboratory of Automobile Materials of MOE and College of Materials Science and Engineering, Jilin University, Changchun, 130012, China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Chongxin Shan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
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17
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Ercan E, Liu CL, Chen WC. Nano-Micro Dimensional Structures of Fiber-Shaped Luminous Halide Perovskite Composites for Photonic and Optoelectronic Applications. Macromol Rapid Commun 2020; 41:e2000157. [PMID: 32608544 DOI: 10.1002/marc.202000157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/19/2020] [Indexed: 12/27/2022]
Abstract
Perovskite nanomaterials have been revealed as highly luminescent structures regarding their dimensional confinement. In particular, their promising potential lies behind remarkable luminescent properties, including color tunability, high photoluminescence quantum yield, and the narrow emission band of halide perovskite (HP) nanostructures for optoelectronic and photonic applications such as lightning and displaying operations. However, HP nanomaterials possess such drawbacks, including oxygen, moisture, temperature, or UV lights, which limit their practical applications. Recently, HP-containing polymer composite fibers have gained much attention owing to the spatial distribution and alignment of HPs with high mechanical strength and ambient stability in addition to their remarkable optical properties comparable to that of nanocrystals. In this review, the fabrication methods for preparing nano-microdimensional HP composite fiber structures are described. Various advantages of the luminescent composite nanofibers are also described, followed by their applications for photonic and optoelectronic devices including sensors, polarizers, waveguides, lasers, light-down converters, light-emitting diode operations, etc. Finally, future directions and remaining challenges of HP-based nanofibers are presented.
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Affiliation(s)
- Ender Ercan
- Department of Chemical Engineering and Advanced Research Center of Green Materials Science and Technology, National Taiwan University, Taipei, 10617, Taiwan
| | - Cheng-Liang Liu
- Department of Chemical and Materials Engineering and Research Center of New Generation Light Driven Photovoltaic Modules, National Central University, Taoyuan, 32001, Taiwan
| | - Wen-Chang Chen
- Department of Chemical Engineering and Advanced Research Center of Green Materials Science and Technology, National Taiwan University, Taipei, 10617, Taiwan
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18
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Veeramuthu L, Liang FC, Zhang ZX, Cho CJ, Ercan E, Chueh CC, Chen WC, Borsali R, Kuo CC. Improving the Performance and Stability of Perovskite Light-Emitting Diodes by a Polymeric Nanothick Interlayer-Assisted Grain Control Process. ACS OMEGA 2020; 5:8972-8981. [PMID: 32337461 PMCID: PMC7178802 DOI: 10.1021/acsomega.0c00758] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
CsPbBr3 is a promising light-emitting material due to its wet solution processability, high photoluminescence quantum yield (PLQY), narrow color spectrum, and cost-effectiveness. Despite such advantages, the morphological defects, unsatisfactory carrier injection, and stability issues retard its widespread applications in light-emitting devices (LEDs). In this work, we demonstrated a facile and cost-effective method to improve the morphology, efficiency, and stability of the CsPbBr3 emissive layer using a dual polymeric encapsulation governed by an interface-assisted grain control process (IAGCP). An eco-friendly low-cost hydrophilic polymer poly(vinylpyrrolidone) (PVP) was blended into the CsPbBr3 precursor solution, which endows the prepared film with a better surface coverage with a smoothened surface. Furthermore, it is revealed that inserting a thin PVP nanothick interlayer at the poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS)/emissive layer interface further promotes the film quality and the performance of the derived LED. It is mainly attributed to three major consequences: (i) reduced grain size of the emissive layer, which facilitates charge recombination, (ii) reduced current leakage due to the enhanced electron-blocking effect, and (iii) improved color purity and air stability owing to better defect passivation. As a result, the optimized composite emissive film can retain the luminescence properties even on exposure to ambient conditions for 80 days and ∼62% of its initial PL intensity can be preserved after 30 days of storage without any encapsulation.
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Affiliation(s)
- Loganathan Veeramuthu
- Institute
of Organic and Polymeric Materials, Research and Development Center
of Smart Textile Technology, National Taipei
University of Technology, 10608 Taipei, Taiwan
| | - Fang-Cheng Liang
- Institute
of Organic and Polymeric Materials, Research and Development Center
of Smart Textile Technology, National Taipei
University of Technology, 10608 Taipei, Taiwan
- Centre
de Recherches sur les Macromolécules Végétales
(CERMAV), affiliated with Grenoble Alpes
University, Institut Carnot PolyNat, BP53, 38041 Grenoble Cedex 9, France
| | - Zhi-Xuan Zhang
- Institute
of Organic and Polymeric Materials, Research and Development Center
of Smart Textile Technology, National Taipei
University of Technology, 10608 Taipei, Taiwan
| | - Chia-Jung Cho
- Institute
of Organic and Polymeric Materials, Research and Development Center
of Smart Textile Technology, National Taipei
University of Technology, 10608 Taipei, Taiwan
| | - Ender Ercan
- Department
of Chemical Engineering and Advanced Research Center for Green Materials
Science and Technology, National Taiwan
University, 106 Taipei, Taiwan
| | - Chu-Chen Chueh
- Department
of Chemical Engineering and Advanced Research Center for Green Materials
Science and Technology, National Taiwan
University, 106 Taipei, Taiwan
| | - Wen-Chang Chen
- Department
of Chemical Engineering and Advanced Research Center for Green Materials
Science and Technology, National Taiwan
University, 106 Taipei, Taiwan
| | - Redouane Borsali
- Centre
de Recherches sur les Macromolécules Végétales
(CERMAV), affiliated with Grenoble Alpes
University, Institut Carnot PolyNat, BP53, 38041 Grenoble Cedex 9, France
| | - Chi-Ching Kuo
- Institute
of Organic and Polymeric Materials, Research and Development Center
of Smart Textile Technology, National Taipei
University of Technology, 10608 Taipei, Taiwan
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19
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Popovici D, Diaconu A, Rotaru A, Marin L. Microwave-Assisted Synthesis of an Alternant Poly(fluorene-oxadiazole). Synthesis, Properties, and White Light-Emitting Devices. Polymers (Basel) 2019; 11:polym11101562. [PMID: 31557919 PMCID: PMC6835352 DOI: 10.3390/polym11101562] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/22/2019] [Accepted: 09/23/2019] [Indexed: 12/20/2022] Open
Abstract
An alternant poly(dihexyl fluorene-co diphenyl oxadiazole) has been synthetized by microwave-assisted oxidative polymerization. The structure has been confirmed by 1H-NMR and FTIR spectroscopies. Gel permeation chromatography indicated high molecular weight and low polydispersity index. DFT calculations suggested a complete separation of HOMO and LUMO orbitals, which were located on fluorene and oxadiazole moiety, respectively. X-ray diffraction, polarized light microscopy, and atomic force microscopy indicated the polymer tendency to stack into a layered morphology with a more compact structure for the films prepared by spin coating. Furthermore, UV-vis and photoluminescence spectroscopies indicated the formation of H-aggregates which played a key role in photoluminescence quenching in solid state. Nevertheless, the good charge mobility gained due to the orbital overlapping in H-aggregates led to excellent electroluminescence, which enabled the development of white OLED devices with outstanding stability.
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Affiliation(s)
- Dumitru Popovici
- "Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, 700487 Iasi, Romania.
| | - Andrei Diaconu
- Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University, 720299 Suceava, Romania.
| | - Aurelian Rotaru
- Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University, 720299 Suceava, Romania.
| | - Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry, Romanian Academy, 700487 Iasi, Romania.
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