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Gao W, Zhi G, Zhou M, Niu T. Growth of Single Crystalline 2D Materials beyond Graphene on Non-metallic Substrates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2311317. [PMID: 38712469 DOI: 10.1002/smll.202311317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/14/2024] [Indexed: 05/08/2024]
Abstract
The advent of 2D materials has ushered in the exploration of their synthesis, characterization and application. While plenty of 2D materials have been synthesized on various metallic substrates, interfacial interaction significantly affects their intrinsic electronic properties. Additionally, the complex transfer process presents further challenges. In this context, experimental efforts are devoted to the direct growth on technologically important semiconductor/insulator substrates. This review aims to uncover the effects of substrate on the growth of 2D materials. The focus is on non-metallic substrate used for epitaxial growth and how this highlights the necessity for phase engineering and advanced characterization at atomic scale. Special attention is paid to monoelemental 2D structures with topological properties. The conclusion is drawn through a discussion of the requirements for integrating 2D materials with current semiconductor-based technology and the unique properties of heterostructures based on 2D materials. Overall, this review describes how 2D materials can be fabricated directly on non-metallic substrates and the exploration of growth mechanism at atomic scale.
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Affiliation(s)
- Wenjin Gao
- Tianmushan Laboratory, Hangzhou, 310023, China
- Hangzhou International Innovation Institute, Beihang University, Hangzhou, 311115, China
- School of Physics, Beihang University, Beijing, 100191, China
| | | | - Miao Zhou
- Tianmushan Laboratory, Hangzhou, 310023, China
- Hangzhou International Innovation Institute, Beihang University, Hangzhou, 311115, China
- School of Physics, Beihang University, Beijing, 100191, China
| | - Tianchao Niu
- Hangzhou International Innovation Institute, Beihang University, Hangzhou, 311115, China
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2
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Nguyen Thi BN, Ha CV, Thi Ha Lien N, Guerrero-Sanchez J, Hoat DM. Doping-mediated electronic and magnetic properties of graphene-like ionic NaX (X = F and Cl) monolayers. Phys Chem Chem Phys 2023; 25:32569-32577. [PMID: 37999640 DOI: 10.1039/d3cp02115g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
In this work, the stability, and electronic and magnetic properties of pristine and doped graphene-like ionic NaX (X = F and Cl) monolayers are explored using first-principles calculations. The good stability of NaF and NaCl monolayers is confirmed by phonon dispersion curves and ab initio molecular dynamics simulations. Electronic structure calculations show their insulator nature with large indirect band gaps of 5.43 (7.26) and 5.06 (6.32) eV as calculated with the PBE (HSE06) functional, respectively. In addition, their ionic character is also demonstrated. Furthermore, a doping approach is explored to functionalize NaX monolayers for spintronic applications. For such a goal, IIA- and VIA-group atoms are selected as dopants due to their dissimilar valence electronic configuration as compared with the host atoms. The results indicate the emergence of magnetic semiconductor nature with a total magnetic moment of 1μB. Herein, magnetic properties are produced mainly by the dopant atoms, which induce new middle-gap energy states around the Fermi level. Finally, the effects of codoping the NaF monolayer with Ca and O and NaCl with Ba and O are also examined. Adjacent Ca-O and Ba-O pairs preserve the non-magnetic nature. Further separating dopants leads to the emergence of magnetic semiconductor behavior, with lower magnetization than separate doping. This work introduces new ionic 2D materials for optoelectronic and spintronic applications, contributing to the research effort to find out new 2D multifunctional materials.
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Affiliation(s)
- Bich Ngoc Nguyen Thi
- Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Chu Viet Ha
- Faculty of Physics, TNU-University of Education, Thai Nguyen, 250000, Vietnam
| | - Nghiem Thi Ha Lien
- Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam
| | - J Guerrero-Sanchez
- Universidad Nacional Autónoma de México, Centro de Nanociencias y Nanotecnología, Apartado Postal 14, Ensenada, Baja California, Código Postal 22800, Mexico
| | - D M Hoat
- Institute of Theoretical and Applied Research, Duy Tan University, Ha Noi 100000, Vietnam.
- Faculty of Natural Sciences, Duy Tan University, Da Nang 550000, Vietnam
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3
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Huang H, Zheng Y, Liu C, Zhang Z, Gao M, Wang J, Liu Y, Chu PK, Yu XF. Interfacial Engineering Enables Perovskite Heteroepitaxial Growth on Black Phosphorus for Flexible X-ray Detectors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303229. [PMID: 37475501 DOI: 10.1002/smll.202303229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/12/2023] [Indexed: 07/22/2023]
Abstract
2D materials with atomic-scale thickness and mechanical robustness are required for flexible devices. The superior optoelectronic properties and high-Z atoms in metal halide perovskites render them desirable for X-ray detection, but the intrinsic brittleness is an obstacle hampering the applications in flexible detectors. Herein, an interfacial engineering strategy is demonstrated for the epitaxial growth of methylammonium lead bromide (MAPbBr3 ) on black phosphorus (BP) for flexible X-ray detectors. The mechanically robust, high-quality heterostructure consisting of a Pb transition layer is synthesized for the two-way bridging of BP and MAPbBr3 . Excellent optoelectronic properties such as a high X-ray sensitivity of 1,609 ± 122 µC Gy-1 cm-2 (80 times higher than that of the commercial amorphous Se), a fast response time of 40 ± 5 ms, as well as a low detection limit of 3 µGys-1 (about a fifteenth of the medical chest X-ray dose rate) are achieved from the simple and planar direct X-ray detector fabricated on an organic filter membrane. More importantly, these flat and simple devices are bendable and mechanically durable by exhibiting only 10% photocurrent degradation after 200 bending cycles. The novel heterostructure has great potential in large-area, flexible, and sensitive X-ray detection applications.
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Affiliation(s)
- Hao Huang
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
- Hubei Three Gorges Laboratory, Yichang, Hubei, 443007, P. R. China
| | - Ying Zheng
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
- Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, P. R. China
| | - Chang Liu
- Hubei Three Gorges Laboratory, Yichang, Hubei, 443007, P. R. China
| | - Zhenyu Zhang
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Ming Gao
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Jiahong Wang
- Hubei Three Gorges Laboratory, Yichang, Hubei, 443007, P. R. China
| | - Yanliang Liu
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Hong Kong, Kowloon, 999077, China
| | - Xue-Feng Yu
- Shenzhen Key Laboratory of Micro/Nano Biosensing, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
- Hubei Three Gorges Laboratory, Yichang, Hubei, 443007, P. R. China
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Swathilakshmi S, Devi R, Sai Gautam G. Performance of the r 2SCAN Functional in Transition Metal Oxides. J Chem Theory Comput 2023. [PMID: 37329316 DOI: 10.1021/acs.jctc.3c00030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
We assess the accuracy and computational efficiency of the recently developed meta-generalized gradient approximation (metaGGA) functional, restored regularized strongly constrained and appropriately normed (r2SCAN), in transition metal oxide (TMO) systems and compare its performance against SCAN. Specifically, we benchmark the r2SCAN-calculated oxidation enthalpies, lattice parameters, on-site magnetic moments, and band gaps of binary 3d TMOs against the SCAN-calculated and experimental values. Additionally, we evaluate the optimal Hubbard U correction required for each transition metal (TM) to improve the accuracy of the r2SCAN functional, based on experimental oxidation enthalpies, and verify the transferability of the U values by comparing against experimental properties on other TM-containing oxides. Notably, including the U-correction with r2SCAN increases the lattice parameters, on-site magnetic moments, and band gaps of TMOs, apart from an improved description of the ground state electronic state in narrow band gap TMOs. The r2SCAN and r2SCAN+U calculated oxidation enthalpies follow the qualitative trends of SCAN and SCAN+U, with r2SCAN and r2SCAN+U predicting marginally larger lattice parameters, smaller magnetic moments, and lower band gaps compared to SCAN and SCAN+U, respectively. We observe the overall computational time (i.e., for all ionic+electronic steps) required for r2SCAN(+U) to be lower than SCAN(+U). Thus, the r2SCAN(+U) framework can offer a reasonably accurate description of the ground state properties of TMOs with better computational efficiency than SCAN(+U).
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Affiliation(s)
- S Swathilakshmi
- Department of Materials Engineering, Indian Institute of Science, Bengaluru 560012, India
| | - Reshma Devi
- Department of Materials Engineering, Indian Institute of Science, Bengaluru 560012, India
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5
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Lu M, Zhu X, Sun H, Chen H, Xue K, Du L, Cui L, Zhang P, Wang D, Cui G. Cu 2O/Co 3O 4 nanoarrays for rapid quantitative analysis of hydrogen sulfide in blood. NANOSCALE ADVANCES 2023; 5:1784-1794. [PMID: 36926557 PMCID: PMC10012851 DOI: 10.1039/d2na00865c] [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: 11/28/2022] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
2D heterostructure nanoarrays have emerged as a promising sensing material for rapid disease detection applications. In this study, a bio-H2S sensor based on Cu2O/Co3O4 nanoarrays was proposed, the controllable preparation of the nanoarrays being achieved by exploring the experimental parameters of the 2D electrodeposition in situ assembly process. The nanoarrays were designed as a multi-barrier system with strict periodicity and long-range order. Based on the interfacial conductance modulation and vulcanization reaction of Cu2O and Co3O4, the sensor exhibited superior sensitivity, selectivity, and stability to H2S in human blood. In addition, the sensor exhibited a reasonable response to 0.1 μmol L-1 Na2S solution, indicating that it had a low detection limit for practical applications. Moreover, first-principles calculations were performed to study changes in the heterointerface during the sensing process and the mechanism of rapid response of the sensor. This work demonstrated the reliability of Cu2O/Co3O4 nanoarrays applied in portable sensors for the rapid detection of bio-H2S.
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Affiliation(s)
- Manli Lu
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
| | - Xiaomeng Zhu
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
| | - Haoming Sun
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
- School of Mechanical Engineering, Dalian Jiaotong University Dalian 116028 China
| | - Huijuan Chen
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
| | - Kaifeng Xue
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
| | - Lulu Du
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
| | - Liyuan Cui
- Linyi People's Hospital Linyi 276000 Shandong China
| | - Pinhua Zhang
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
| | - Dongchao Wang
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
| | - Guangliang Cui
- School of Physics and Electrical Engineering, Linyi University Linyi 276000 China
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6
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Predicting the shape of crystals with 'unknowable' surface energies. NATURE COMPUTATIONAL SCIENCE 2022; 2:705-706. [PMID: 38177373 DOI: 10.1038/s43588-022-00356-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
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7
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Sekiya R, Haino T. Integration of Nanographenes and Organic Chemistry - Toward Nanographene-based Two-Dimensional Materials. Chemphyschem 2022; 23:e202200311. [PMID: 35650010 DOI: 10.1002/cphc.202200311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Indexed: 11/06/2022]
Abstract
Graphene and its relatives have received considerable attention from the fields of physics and chemistry since the isolation of pristine graphene sheets. Nanographenes (NGs) are graphene fragments that are a few to tens of nanometers in diameter. Compared to graphene and its relatives, such as graphene oxides, NGs can be handled more easily, and their large π surface and oxygen functional groups on the edge allow postsynthetic modifications. The study of NGs is gradually shifting from the development of synthetic procedures to postsynthetic modification. From the structural point of view, NGs can be regarded as two-dimensional carbon polymers. Their unique structures and affinity for organic molecules make NGs excellent scaffolds for two-dimensional materials, which are now an important topic in organic and polymer chemistry. In this conceptual article, we introduce the position of NGs from the perspective of two-dimensional substances and briefly summarize both the structural features of NGs and the effects of functionalization on their physical properties. These are valuable when producing reasonable strategies for their postsynthetic modifications.
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Affiliation(s)
- Ryo Sekiya
- Hiroshima Daigaku - Higashihiroshima Campus: Hiroshima Daigaku, chemistry, JAPAN
| | - Takeharu Haino
- Hiroshima Daigaku - Higashihiroshima Campus: Hiroshima Daigaku, Department of Chemistry, 1-3-1 Kagamiyama, 739-8526, Higashi-Hiroshima, JAPAN
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8
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Tuning the Electronic and Optical Properties of the Novel Monolayer Noble-Transition-Metal Dichalcogenides Semiconductor β-AuSe via Strain: A Computational Investigation. NANOMATERIALS 2022; 12:nano12081272. [PMID: 35457976 PMCID: PMC9031954 DOI: 10.3390/nano12081272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/19/2022] [Accepted: 04/06/2022] [Indexed: 12/10/2022]
Abstract
The strain-controlled structural, electronic, and optical characteristics of monolayer β-AuSe are systematically studied using first-principles calculations in this paper. For the strain-free monolayer β-AuSe, the structure is dynamically stable and maintains good stability at room temperature. It belongs to the indirect band gap semiconductor, and its valence band maximum (VBM) and conduction band minimum (CBM) consist of hybrid Au-d and Se-p electrons. Au–Se is a partial ionic bond and a partial polarized covalent bond. Meanwhile, lone-pair electrons exist around Se and are located between different layers. Moreover, its optical properties are anisotropic. As for the strained monolayer β-AuSe, it is susceptible to deformation by uniaxial tensile strain. It remains the semiconductor when applying different strains within an extensive range; however, only the biaxial compressive strain is beyond −12%, leading to a semiconductor–semimetal transition. Furthermore, it can maintain relatively stable optical properties under a high strain rate, whereas the change in optical properties is unpredictable when applying different strains. Finally, we suggest that the excellent carrier transport properties of the strain-free monolayer β-AuSe and the stable electronic properties of the strained monolayer β-AuSe originate from the p–d hybridization effect. Therefore, we predict that monolayer β-AuSe is a promising flexible semiconductive photoelectric material in the high-efficiency nano-electronic and nano-optoelectronic fields.
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Kutana A, Altalhi T, Ruan Q, Zhang JJ, Penev ES, Yakobson BI. Stability and electronic properties of gallenene. NANOSCALE ADVANCES 2022; 4:1408-1413. [PMID: 36133675 PMCID: PMC9419834 DOI: 10.1039/d1na00553g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 01/15/2022] [Indexed: 06/16/2023]
Abstract
Two-dimensional metals offer intriguing possibilities to explore the metallic and other related properties in systems with reduced dimensionality. Here, following recent experimental reports of synthesis of two-dimensional metallic gallium (gallenene) on insulating substrates, we conduct a computational search of gallenene structures using the Particle Swarm Optimization algorithm, and identify stable low energy structures. Our calculations of the critical temperature for conventional superconductivity yield values of ∼7 K for gallenene. We also emulate the presence of the substrate by introducing the external confining potential and test its effect on the structures with unstable phonons.
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Affiliation(s)
- Alex Kutana
- Department of Materials Science and NanoEngineering, Rice University Houston Texas 77005 USA
| | - Tariq Altalhi
- Chemistry Department, Taif University Taif 21974 Saudi Arabia
| | - Qiyuan Ruan
- Department of Materials Science and NanoEngineering, Rice University Houston Texas 77005 USA
| | - Jun-Jie Zhang
- Department of Materials Science and NanoEngineering, Rice University Houston Texas 77005 USA
| | - Evgeni S Penev
- Department of Materials Science and NanoEngineering, Rice University Houston Texas 77005 USA
| | - Boris I Yakobson
- Chemistry Department, Taif University Taif 21974 Saudi Arabia
- Department of Chemistry, Rice University Houston Texas 77005 USA
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10
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Li S, Chen Z, Wang Z, Weng M, Li J, Zhang M, Lu J, Xu K, Pan F. Graph-based discovery and analysis of atomic-scale one-dimensional materials. Natl Sci Rev 2022; 9:nwac028. [PMID: 35677223 PMCID: PMC9170357 DOI: 10.1093/nsr/nwac028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 01/28/2022] [Accepted: 01/28/2022] [Indexed: 11/21/2022] Open
Abstract
Recent decades have witnessed an exponential growth in the discovery of low-dimensional materials (LDMs), benefiting from our unprecedented capabilities in characterizing their structure and chemistry with the aid of advanced computational techniques. Recently, the success of two-dimensional compounds has encouraged extensive research into one-dimensional (1D) atomic chains. Here, we present a methodology for topological classification of structural blocks in bulk crystals based on graph theory, leading to the identification of exfoliable 1D atomic chains and their categorization into a variety of chemical families. A subtle interplay is revealed between the prototypical 1D structural motifs and their chemical space. Leveraging the structure graphs, we elucidate the self-passivation mechanism of 1D compounds imparted by lone electron pairs, and reveal the dependence of the electronic band gap on the cationic percolation network formed by connections between structure units. This graph-theory-based formalism could serve as a source of stimuli for the future design of LDMs.
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Affiliation(s)
- Shunning Li
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen518055, China
| | - Zhefeng Chen
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen518055, China
| | - Zhi Wang
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen518055, China
| | - Mouyi Weng
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen518055, China
| | - Jianyuan Li
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen518055, China
| | - Mingzheng Zhang
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen518055, China
| | - Jing Lu
- State Key Laboratory of Mesoscopic Physics and Department of Physics, Peking University, Beijing100871, China
| | - Kang Xu
- Electrochemistry Branch, Sensor and Electron Devices Directorate, Power and Energy Division, US Army Research Laboratory, Adelphi, MD 20783, USA
| | - Feng Pan
- School of Advanced Materials, Peking University, Shenzhen Graduate School, Shenzhen518055, China
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11
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Friedrich R, Ghorbani-Asl M, Curtarolo S, Krasheninnikov AV. Data-Driven Quest for Two-Dimensional Non-van der Waals Materials. NANO LETTERS 2022; 22:989-997. [PMID: 35051335 DOI: 10.1021/acs.nanolett.1c03841] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Two-dimensional (2D) materials are frequently associated with the sheets forming bulk layered compounds bonded by van der Waals (vdW) forces. The anisotropy and weak interaction between the sheets have also been the main criteria in the computational search for new 2D systems, predicting ∼2000 exfoliable compounds. However, some representatives of a new type of non-vdW 2D systems, without layered 3D analogues, were recently manufactured. For this novel materials class, data-driven design principles are still missing. Here, we outline a set of 8 binary and 20 ternary candidates by filtering the AFLOW-ICSD database according to structural prototypes. The oxidation state of the surface cations regulates the exfoliation energy with low oxidation numbers leading to weak bonding─a useful descriptor to obtain novel 2D materials also providing clear guidelines for experiments. A vast range of appealing electronic, optical, and magnetic properties make the candidates attractive for various applications and particularly spintronics.
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Affiliation(s)
- Rico Friedrich
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Center for Autonomous Materials Design, Duke University, Durham, North Carolina 27708, United States
| | - Mahdi Ghorbani-Asl
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - Stefano Curtarolo
- Center for Autonomous Materials Design, Duke University, Durham, North Carolina 27708, United States
- Materials Science, Electrical Engineering, and Physics, Duke University, Durham, North Carolina 27708, United States
| | - Arkady V Krasheninnikov
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Department of Applied Physics, Aalto University, Aalto 00076, Finland
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12
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Deshpande S, Deshpande M, Ahuja R, Hussain T. Tuning the electronic, magnetic, and sensing properties of a single atom embedded microporous C 3N 6 monolayer towards XO 2 (X = C, N, S) gases. NEW J CHEM 2022. [DOI: 10.1039/d2nj01956f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2D carbon nitride frameworks have received a lot of attention due to their high potential in many applications, such as gas sensing.
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Affiliation(s)
- Swapnil Deshpande
- Department of Physics, H. P. T. Arts and R. Y. K. Science College, Nashik 422005, Maharashtra, India
| | - Mrinalini Deshpande
- Department of Physics, H. P. T. Arts and R. Y. K. Science College, Nashik 422005, Maharashtra, India
| | - Rajeev Ahuja
- Department of Physics, Indian Institute of Technology, Ropar, Rupnagar 140001, Punjab, India
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120, Uppsala, Sweden
| | - Tanveer Hussain
- School of Chemical Engineering, The University of Queensland, St Lucia, Brisbane 4072, Australia
- School of Science and Technology, University of New England, Armidale, New South Wales 2351, Australia
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13
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Toral-Lopez A, Santos H, Marin EG, Ruiz FG, Palacios JJ, Godoy A. Multi-scale modeling of 2D GaSe FETs with strained channels. NANOTECHNOLOGY 2021; 33:105201. [PMID: 34818631 DOI: 10.1088/1361-6528/ac3ce2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/24/2021] [Indexed: 06/13/2023]
Abstract
Electronic devices based on bidimensional materials (2DMs) are the subject of an intense experimental research, that demands a tantamount theoretical activity. The latter must be hold up by a varied set of tools able to rationalize, explain and predict the operation principles of the devices. However, in the broad context of multi-scale computational nanoelectronics, there is currently a lack of simulation tools connecting atomistic descriptions with semi-classical mesoscopic device-level simulations and able to properly explain the performance of many state-of-the-art devices. To contribute to filling this gap we present a multi-scale approach that combines fine-level material calculations with a semi-classical drift-diffusion transport model. Its use is exemplified by assessing 2DM field effect transistors with strained channels, showing excellent capabilities to capture the changes in the crystal structure and their impact into the device performance. Interestingly, we verify the capacity of strain in monolayer GaSe to enhance the conduction of one type of carrier, enabling the possibility to mimic the effect of chemical doping on 2D materials. These results illustrate the great potential of the proposed approach to bridge levels of abstraction rarely connected before and thus contribute to the theoretical modeling of state-of-the-art 2DM-based devices.
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Affiliation(s)
- A Toral-Lopez
- Dpto. Electrónica y Tecnología de Computadores, Facultad de Ciencias, Universidad de Granada, Spain
| | - H Santos
- Dpto. Matemática Aplicada, Ciencia e Ingeniería de los Materiales y Tecnología Electrónica, Universidad Rey Juan Carlos, Spain
| | - E G Marin
- Dpto. Electrónica y Tecnología de Computadores, Facultad de Ciencias, Universidad de Granada, Spain
| | - F G Ruiz
- Dpto. Electrónica y Tecnología de Computadores, Facultad de Ciencias, Universidad de Granada, Spain
| | - J J Palacios
- Dpto. Física de la Materia Condensada, Condensed Matter Physics Center (IFIMAC), and Instituto Nicolás Cabrera (INC), Universidad Autónoma de Madrid, Cantoblanco 28049, Spain
| | - A Godoy
- Dpto. Electrónica y Tecnología de Computadores, Facultad de Ciencias, Universidad de Granada, Spain
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Qian YY, Zheng B, Xie Y, He J, Chen JM, Yang L, Lu X, Yu HT. Imparting α-Borophene with High Work Function by Fluorine Adsorption: A First-Principles Investigation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11027-11040. [PMID: 34498881 DOI: 10.1021/acs.langmuir.1c01598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Increasing the work function of borophene over a large range is crucial for the development of borophene-based anode materials for highly efficient electronic devices. In this study, the effect of fluorine adsorption on the structures and stabilities, particularly on the work function, of α-borophene (BBP), was systematically investigated via first-principles density functional theory. The calculations indicated that BBP was well-stabilized by fluorine adsorption and the work functions of metallic fluorine-adsorbed BBPs (Fn-BBPs) sharply increased with increasing fluorine content. Moreover, the work function of F-BBP was close to that of the frequently used anode material Au and even, for other Fn-BBPs, higher than that of Pt. Furthermore, we have comprehensively discussed the factors, including substrate deformation, charge transfer, induced dipole moment, and Fermi and vacuum energy levels, affecting the improvement of work function. Particularly, we have demonstrated that the charge redistribution of the substrate induced by the bonding interaction between fluorine and the matrix predominantly contributes to the observed increase in the work function. Additionally, the effect of fluorine adsorption on the increase in the work function of BBP was significantly stronger than that of silicene or graphene. Our results concretely support the fact that Fn-BBPs can be extremely attractive anode materials for electronic device applications.
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Affiliation(s)
- Yin-Yin Qian
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education) and School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Bing Zheng
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education) and School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Ying Xie
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education) and School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Jing He
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education) and School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Jia-Min Chen
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education) and School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Lin Yang
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Xing Lu
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hai-Tao Yu
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education) and School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
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Penev ES, Liu Y, Altalhi T, Kutana A, Yakobson BI. Stable Low-Dimensional Boron Chalcogenides from Planar Structural Motifs. J Phys Chem A 2021; 125:6059-6063. [PMID: 34242026 DOI: 10.1021/acs.jpca.1c02865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There has been growing interest in searching for new low-dimensional (low-D) materials for nanoelectronics and energy applications. Most materials have their structural units extended in three dimensions and connected with chemical bonds. When the dimension is reduced, these bonds will be broken, decreasing the stability and making their experimental realization difficult. Here, we show that stable low-D materials can be made from naturally existing planar structural units. This is demonstrated by first-principles study of boron chalcogenides (B-X), which can have various low-D structures with attractive properties. For example, B2O3 can be the thinnest proton-exchange membrane for fuel cells. B-X are wide-gap semiconductors that can complement the narrow-gap 2D metal dichalcogenides for (opto)electronics. Our work sheds light on the stability of low-D materials and suggests guidelines for rational design of new materials.
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Affiliation(s)
- Evgeni S Penev
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Yuanyue Liu
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Tariq Altalhi
- Chemistry Department, Taif University, Taif 21974, Saudi Arabia
| | - Alex Kutana
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Boris I Yakobson
- Chemistry Department, Taif University, Taif 21974, Saudi Arabia.,Department of Chemistry, Rice University, Houston, Texas 77005, United States
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