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Jia M, Jin C, Wang B, Wang B. Ferroelectric polarization promotes a CdS/In 2Se 3 heterostructure for photocatalytic water splitting. Phys Chem Chem Phys 2024; 26:16637-16645. [PMID: 38808387 DOI: 10.1039/d3cp05551e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The rapid recombination of photogenerated electrons and holes greatly limits the efficiency of photocatalyst based on semiconductor. In order to address this issue, we predicted a novel ferroelectric polarized heterojunction photocatalyst, CdS/In2Se3, which enables the spontaneous overall water splitting reaction. The CdS/In2Se3 heterojunction exhibits a band-edge staggered alignment and it is easy to form a direct Z-scheme charge transfer pathway. Besides, the built-in electric field (Eint) in the CdS/In2Se3 heterojunction promoted the charge transfer of CdS/In2Se3, leading to an improved separating efficiency of photo-generated carriers. Moreover, the vertical intrinsic polarized electric field (Ep) not only alters the position of the band edge but also reduces the bandgap limitations commonly associated with photocatalytic materials. Furthermore, the CdS/In2Se3 heterojunctions demonstrate separate catalytic activity for the hydrogen evolution reaction (HER) on the surface of the CdS monolayer and oxygen evolution reaction (OER) on the surface of In2Se3, respectively. Notably, the CdS/In2Se3-down configuration enables spontaneous photocatalytic water splitting in pH = 7, while the CdS/In2Se3-up configuration efficiently facilitates the HER process. This study highlights the significant advantages of CdS/In2Se3 heterojunctions as photocatalytic materials, offering unique insights into the development and research of this promising heterojunction architecture.
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Affiliation(s)
- Minglei Jia
- School of Electro-Mechanical Engineering, Zhongyuan Institute of Science and Technology, Xuchang 461000, China.
| | - Chao Jin
- Institute for Computational Materials Science, Joint Center for Theoretical Physics (JCTP), School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
| | - Baoshan Wang
- Zibo Huatian Rubber Plastic Technology CO. LTD, Zibo, 256410, China
| | - Bing Wang
- Institute for Computational Materials Science, Joint Center for Theoretical Physics (JCTP), School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
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2
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Wang W, Liu Z, Nie H, Kong B. The direct Z-scheme character and roles of S vacancy in BiOCl/Bi 2S 3-(001) heterostructures for superior photocatalytic activity: a hybrid density functional investigation. Phys Chem Chem Phys 2024; 26:10723-10736. [PMID: 38512329 DOI: 10.1039/d3cp06297j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Given some current speculations and controversies regarding the type of BiOCl/Bi2S3-(001) heterostructure in experiments, it is of great importance to clarify these controversies and further explain the relevant experimental results. In this work, based on first-principles hybrid density functional calculations, it is verified that the BiOCl/Bi2S3-(001) heterostructure is a direct Z-scheme photocatalyst with high photo-generated carrier separation efficiency and strong redox ability that can react with O2 and OH- to produce photocatalytic active species of superoxide ions (˙O2-) and hydroxyl radicals (˙OH), respectively. This is consistent with the experimental findings and explains the excellent photocatalytic performance of the BiOCl/Bi2S3-(001) heterostructure in experiments. Besides, excitingly, it is found that the optical absorption, built-in electric field intensity, interlayer recombination probability, hydrogen evolution reaction ability, and the difference in electron-hole mobility are further enhanced via S vacancy introduction in BiOCl/Bi2S3-(001). Therefore, the significant roles of S vacancy in further improving the photocatalytic properties of the BiOCl/Bi2S3-(001) heterostructure are profoundly revealed. This work can provide valuable theoretical insights for designing the superior direct Z-scheme BiOCl/VS-Bi2S3-(001) heterostructure with promising photocatalytic properties.
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Affiliation(s)
- Wentao Wang
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China.
| | - Zuoyin Liu
- School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
| | - Hongwei Nie
- School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
| | - Bo Kong
- School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
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3
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Guo S, Cui Z, Zou Y, Sa B. Z-scheme Al 2SeTe/GaSe and Al 2SeTe/InS van der Waals heterostructures for photocatalytic water splitting. Phys Chem Chem Phys 2024; 26:5368-5376. [PMID: 38269434 DOI: 10.1039/d3cp05819k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Designing Z-scheme van der Waals (vdW) heterostructured photocatalysts is a promising strategy for developing highly efficient overall water splitting. Herein, by employing density functional theory calculations, we systematically investigated the stability, electronic structures, photocatalytic and optical properties of Al2SeTe, GaSe, and InS monolayers and their corresponding vdW heterostructures. Interestingly, electronic structures show that all vdW heterostructures have direct band gaps, which is conducive to the transition of electrons from the valence band to the conduction band. Notably, Al2TeSe/GaSe and Al2TeSe/InS vdW heterostructures possess large overpotentials for Z-scheme photocatalytic water splitting, as proved by the results of band edge positions and band structure bending. Moreover, these vdW heterostructures exhibit good optical absorption in ultraviolet and visible light regions. We believe that our findings will open a new avenue for the modulation and development of Al2TeSe/GaSe and Al2TeSe/InS vdW heterostructures for photocatalytic water splitting.
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Affiliation(s)
- Shaoying Guo
- School of Pharmacy, Fujian Health College, Fuzhou, Fujian 350101, P. R. China.
- Fujian Provincial Key Laboratory of Pollution Control & Resource Reuse, Fujian Normal University, Fuzhou 350003, P. R. China
| | - Zhou Cui
- Multiscale Computational Materials Facility & Materials Genome Institute, School of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, P. R. China.
| | - Yanhui Zou
- School of Pharmacy, Fujian Health College, Fuzhou, Fujian 350101, P. R. China.
| | - Baisheng Sa
- Multiscale Computational Materials Facility & Materials Genome Institute, School of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, P. R. China.
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Liu T, Xiao W, Luo Z, Bi J, Zhang Y, Wang G, Wang D, Liu X. Regulating on photocatalytic overall water splitting performance of gallium thiophosphate based on transition metal doping: A first-principles study. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zeng L, Zhang S, Yao L, Bi Z, Zhang Y, Kang P, Yan J, Zhang Z, Yun J. A type-II NGyne/GaSe heterostructure with high carrier mobility and tunable electronic properties for photovoltaic application. NANOTECHNOLOGY 2022; 34:065702. [PMID: 36356303 DOI: 10.1088/1361-6528/aca1cc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/10/2022] [Indexed: 06/16/2023]
Abstract
The two-dimensional heterostructures with type-II band alignment and super-high carrier mobility offer an updated perspective for photovoltaic devices. Here, based on the first-principles calculation, a novel vertical NGyne/GaSe heterostructure with an intrinsic type-II band alignment, super-high carrier mobility (104cm2V-1s-1), and strong visible to ultraviolet light absorption (104-105cm-1) is constructed. We investigate the electronic structure and the interfacial properties of the NGyne/GaSe heterostructure under electric field and strain. The band offsets and band gap of the NGyne/GaSe heterostructure can be regulated under applied vertical electric field and strain efficiently. Further study reveals that the photoelectric conversion efficiency of the NGyne/GaSe heterostructure is vastly improved under a negative electric field and reaches up to 25.09%. Meanwhile, near-free electron states are induced under a large applied electric field, leading to the NGyne/GaSe heterostructure transform from semiconductors to metal. Our results indicate that the NGyne/GaSe heterostructure will have extremely potential in optoelectronic devices, especially solar cells.
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Affiliation(s)
- Liru Zeng
- School of Information Science and Technology, Northwest University, Xi'an, 710127, People's Republic of China
| | - Siyu Zhang
- School of Information Science and Technology, Northwest University, Xi'an, 710127, People's Republic of China
| | - Linwei Yao
- School of Information Science and Technology, Northwest University, Xi'an, 710127, People's Republic of China
| | - Zhisong Bi
- School of Information Science and Technology, Northwest University, Xi'an, 710127, People's Republic of China
| | - Yanni Zhang
- College of Physics & Electronic Engineering, Xianyang Normal University, Xianyang, 712000, People's Republic of China
| | - Peng Kang
- Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada
| | - Junfeng Yan
- School of Information Science and Technology, Northwest University, Xi'an, 710127, People's Republic of China
| | - Zhiyong Zhang
- School of Information Science and Technology, Northwest University, Xi'an, 710127, People's Republic of China
| | - Jiangni Yun
- School of Information Science and Technology, Northwest University, Xi'an, 710127, People's Republic of China
- Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada
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Liu F, Yu Q, Xue J, Shu B, Zheng C, Deng H, Zhang X, Gong P, Chen M, Lin H, Wang J, Zhu S, Wu J. Bimetallic Alloys b-As xP 1-x at High Concentration Differences: Ideal for Photonic Devices. J Phys Chem Lett 2022; 13:9501-9509. [PMID: 36200790 DOI: 10.1021/acs.jpclett.2c01973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Black arsenic phosphorus (b-AsxP1-x) is expected to be one of the primary materials for future photonic devices. However, the x-factor is randomly estimated and applied in photonic devices in current studies, rather than systematically analyzing it for a comprehensive understanding. Herein, AsxP1-x switches from a direct band gap semiconductor to an indirect band gap one at x = 0.75. AsxP1-x at x ≤ 0.25 is capable of broadband absorption, while b-AsxP1-x at x ≥ 0.75 can only absorb at specific wavelengths in the perspective of the electron energy transition. Additionally, the optoelectronic response of the integral field-effect transistor configurations constructed with b-AsxP1-x is investigated systematically as a photodetector device. The photonic response characteristics show high polarization sensitivity at x ≥ 0.75, but a typical circuit system signal at x ≤ 0.25. These results suggest that b-AsxP1-x with high concentration differences is a perfect candidate for photonic material.
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Affiliation(s)
- Fangqi Liu
- Hubei Province Key Laboratory of Systems Science in Metallurgical Process, College of Science, The State Key Laboratory for Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
| | - Qiang Yu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
- Key Laboratory of Nanodevices and Applications and Key Laboratory of Nanophotonic Materials and Devices, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215123, China
| | - Junfei Xue
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
| | - Bowang Shu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
| | - Cangdong Zheng
- Key Laboratory of Metallurgical Equipment and Control Technology, Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Haiqin Deng
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
| | - Xiaolin Zhang
- Key Laboratory of Metallurgical Equipment and Control Technology, Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Pengwei Gong
- Key Laboratory of Metallurgical Equipment and Control Technology, Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Mingyan Chen
- Hongzhiwei Technology (Shanghai) Co. Ltd., 1599 Xinjinqiao Road, Pudong, Shanghai 201206, China
| | - Hai Lin
- College of Physical Science & Technology, Central China Normal University, Wuhan 430079, China
| | - Jian Wang
- Helmholtz Institute Ulm, Ulm D89081, Germany
| | - Sicong Zhu
- Hubei Province Key Laboratory of Systems Science in Metallurgical Process, College of Science, The State Key Laboratory for Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
- Key Laboratory of Metallurgical Equipment and Control Technology, Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Jian Wu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University, Shanghai 200433, China
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Caglayan R, Guler HE, Mogulkoc Y. An analysis of Schottky barrier in silicene/Ga 2SeS heterostructures by employing electric field and strain. Phys Chem Chem Phys 2022; 24:10210-10221. [PMID: 35420606 DOI: 10.1039/d2cp00228k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two-dimensional materials are leading the way in nanodevice applications thanks to their various advantages. Although two-dimensional materials show promise for many applications, they have certain limitations. In the last decade, the increasing demand for the applications of novel two-dimensional materials has accelerated heterostructure studies in this field. Hence, restoring the combination of two-dimensional heterostructured materials has been reported. In this paper, we show that the effect of the external electric field and biaxial strain on the silicene/Ga2SeS heterostructure has a critical impact on the tuning of the Schottky barrier height. The findings such as the variation of the electronic band gap, interlayer charge transfer, total dipole moment, and n-type/p-type Schottky barrier transitions of the silicene/Ga2SeS heterostructure under external effects imply that the device performance can be adjusted with Janus 2D materials.
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Affiliation(s)
- R Caglayan
- Department of Physics, Faculty of Science, Ankara University, 06100, Ankara, Turkey
| | - H E Guler
- Department of Physics, Faculty of Science, Ankara University, 06100, Ankara, Turkey
| | - Y Mogulkoc
- Department of Physics Engineering, Faculty of Engineering, Ankara University, 06100, Ankara, Turkey.
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Nguyen CV, Nguyen CQ, Nguyen ST, Ang YS, Hieu NV. Two-Dimensional Metal/Semiconductor Contact in a Janus MoSH/MoSi 2N 4 van der Waals Heterostructure. J Phys Chem Lett 2022; 13:2576-2582. [PMID: 35289630 DOI: 10.1021/acs.jpclett.2c00245] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Following the successful synthesis of single-layer metallic Janus MoSH and semiconducting MoSi2N4, we investigate the electronic and interfacial features of metal/semiconductor MoSH/MoSi2N4 van der Waals (vdW) contact. We find that the metal/semiconductor MoSH/MoSi2N4 contact forms p-type Schottky contact (p-ShC type) with small Schottky barrier (SB), suggesting that Janus MoSH can be considered as an efficient metallic contact to MoSi2N4 semiconductor with high charge injection efficiency. The electronic structure and interfacial features of the MoSH/MoSi2N4 vdW heterostructure are tunable under strain and electric fields, which give rise to the SB change and the conversion from p-ShC to n-ShC type and from ShC to Ohmic contact. These findings could provide a new pathway for the design of optoelectronic applications based on metal/semiconductor MoSH/MoSi2N4 vdW heterostructures.
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Affiliation(s)
- Chuong V Nguyen
- Department of Materials Science and Engineering, Le Quy Don Technical University, Ha Noi 100000, Vietnam
| | - Cuong Q Nguyen
- Faculty of Physics, College of Education, Hue University, Hue 47000, Vietnam
| | - Son-Tung Nguyen
- Department of Electrical Engineering Technology, Ha Noi University of Industry, Ha Noi 100000, Vietnam
| | - Yee Sin Ang
- Science, Mathematics and Technology (SMT), Singapore University of Technology and Design (SUTD), 8 Somapah Road, Singapore 487372, Singapore
| | - Nguyen V Hieu
- Physics Department, The University of Danang - University of Science and Education, Da Nang 550000, Vietnam
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9
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Yuan XB, Guo YH, Wang JL, Hu GC, Ren JF, Zhao XW. Type-II Band Alignment and Tunable Optical Absorption in MoSSe/InS van der Waals Heterostructure. Front Chem 2022; 10:861838. [PMID: 35273953 PMCID: PMC8902150 DOI: 10.3389/fchem.2022.861838] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 02/07/2022] [Indexed: 12/03/2022] Open
Abstract
In this work, we study the electronic structure, the effective mass, and the optical properties of the MoSSe/InS van der Waals heterostructures (vdWHs) by first-principles calculations. The results indicate that the MoSSe/InS vdWH is an indirect band gap semiconductor and has type-Ⅱ band alignment in which the electrons and holes located at the InS and the MoSSe side, respectively. The band edge position, the band gap and the optical absorption of the MoSSe/InS vdWH can be tuned when biaxial strains are applied. In addition, compared with MoSSe and InS monolayers, the optical absorption of the MoSSe/InS vdWH is improved both in the visible and the ultraviolet regions. These findings indicate that the MoSSe/InS vdWHs have potential applications in optoelectronic devices.
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Affiliation(s)
- X. B. Yuan
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - Y. H. Guo
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - J. L. Wang
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - G. C. Hu
- School of Physics and Electronics, Shandong Normal University, Jinan, China
| | - J. F. Ren
- School of Physics and Electronics, Shandong Normal University, Jinan, China
- Shandong Provincial Engineering and Technical Center of Light Manipulations and Institute of Materials and Clean Energy, Shandong Normal University, Jinan, China
- *Correspondence: J. F. Ren, ; X. W. Zhao,
| | - X. W. Zhao
- School of Physics and Electronics, Shandong Normal University, Jinan, China
- *Correspondence: J. F. Ren, ; X. W. Zhao,
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