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Ferahtia S, Benyettou S, Saib S, Bouarissa N, Ouail K. Mechanical and thermoelectric properties of ZrX 2 and HfX 2 (X = S and Se) from Van der Waals density-functional theory. J Mol Graph Model 2024; 131:108812. [PMID: 38889557 DOI: 10.1016/j.jmgm.2024.108812] [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: 03/06/2024] [Revised: 05/04/2024] [Accepted: 06/12/2024] [Indexed: 06/20/2024]
Abstract
The structural, mechanical, and thermoelectric characteristics of layered transition metal dichalcogenides MX2 (M = Zr, Hf; X = S, Se) have been studied using density functional theory along with van der Waals correction. The exchange-correlation functional, enhanced with corrections for van der Waals interactions, has been evaluated for the hexagonal bulk structures of these materials. The analysis of elastic properties reveals that these compounds exhibit brittleness at zero pressure and conform to Born's criteria for mechanical stability. Examination of elastic constants and moduli suggests that the compounds possess reasonable machinability, moderate hardness, and anisotropy in terms of sound velocity. Transport properties, including the Seebeck coefficient, electrical conductivity, thermal conductivity, and power factor, have been computed using the semi-classical Boltzmann theory implemented in the BoltzTraP code. All investigated compounds exhibit excellent thermoelectric performance at high temperatures. This result suggests that our compounds are highly promising candidate for practical utilization in the thermoelectric scope.
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Affiliation(s)
- S Ferahtia
- Laboratory of Materials Physics and Its Applications, University of M'sila, 28000, M'sila, Algeria; Physics Department, Faculty of Science, University of M'sila, 28000, M'sila, Algeria.
| | - S Benyettou
- Laboratory of Materials Physics and Its Applications, University of M'sila, 28000, M'sila, Algeria; Physics Department, Faculty of Science, University of M'sila, 28000, M'sila, Algeria
| | - S Saib
- Laboratory of Materials Physics and Its Applications, University of M'sila, 28000, M'sila, Algeria; Physics Department, Faculty of Science, University of M'sila, 28000, M'sila, Algeria.
| | - N Bouarissa
- Laboratory of Materials Physics and Its Applications, University of M'sila, 28000, M'sila, Algeria; Physics Department, Faculty of Science, University of M'sila, 28000, M'sila, Algeria
| | - Kh Ouail
- Laboratory of Materials Physics and Its Applications, University of M'sila, 28000, M'sila, Algeria; Physics Department, Faculty of Science, University of M'sila, 28000, M'sila, Algeria
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2
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Wang N, Zhang G, Wang G, Feng Z, Li Q, Zhang H, Li Y, Liu C. Pressure-Induced Enhancement and Retainability of Optoelectronic Properties in Layered Zirconium Disulfide. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400216. [PMID: 38676348 DOI: 10.1002/smll.202400216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/26/2024] [Indexed: 04/28/2024]
Abstract
Transition metal dichalcogenides (TMDs) exhibit excellent electronic and photoelectric properties under pressure, prompting researchers to investigate their structural phase transitions, electrical transport, and photoelectric response upon compression. Herein, the structural and photoelectric properties of layered ZrS2 under pressure using in situ high-pressure photocurrent, Raman scattering spectroscopy, alternating current impedance spectroscopy, absorption spectroscopy, and theoretical calculations are studied. The experimental results show that the photocurrent of ZrS2 continuously increases with increasing pressure. At 24.6 GPa, the photocurrent of high-pressure phase P21/m is three orders of magnitude greater than that of the initial phaseP 3 ¯ m 1 $P\bar{3}m1$ at ambient pressure. The minimum synthesis pressure for pure high-pressure phase P21/m of ZrS2 is 18.8 GPa, which exhibits a photocurrent that is two orders of magnitude higher than that of the initial phaseP 3 ¯ m 1 $P\bar{3}m1$ and displays excellent stability. Additionally, it is discovered that the crystal structure, electrical transport properties and bandgap of layered ZrS2 can also be regulated by pressure. This work offers researchers a new direction for synthesizing high-performance TMDs photoelectric materials using high pressure, which is crucial for enhancing the performance of photoelectric devices in the future.
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Affiliation(s)
- Na Wang
- School of Physical Science & Information Technology, Liaocheng University, Liaocheng, 252059, China
| | - Guozhao Zhang
- School of Physical Science & Information Technology, Liaocheng University, Liaocheng, 252059, China
| | - Guangyu Wang
- School of Physical Science & Information Technology, Liaocheng University, Liaocheng, 252059, China
| | - Zhenbao Feng
- School of Physical Science & Information Technology, Liaocheng University, Liaocheng, 252059, China
| | - Qian Li
- School of Physical Science & Information Technology, Liaocheng University, Liaocheng, 252059, China
| | - Haiwa Zhang
- School of Physical Science & Information Technology, Liaocheng University, Liaocheng, 252059, China
| | - Yinwei Li
- Laboratory of Quantum Functional Materials Design and Application of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China
| | - Cailong Liu
- School of Physical Science & Information Technology, Liaocheng University, Liaocheng, 252059, China
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Zhao Y, Yang L, Liu H, Sun S, Wei X. Strain-induced modification in thermal properties of monolayer 1 T-ZrS 2 and ZrS 2/ZrSe 2 heterojunction. J Mol Model 2024; 30:95. [PMID: 38446247 DOI: 10.1007/s00894-024-05894-4] [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: 01/25/2024] [Accepted: 03/01/2024] [Indexed: 03/07/2024]
Abstract
CONTEXT This paper systematically analyzes the phonon dispersion curves of single-layer ZrS2, ZrSe2, and ZrS2/ZrSe2 heterostructures under different strains. The phonon spectra and thermal parameters of the three structures were obtained based on the density functional perturbation theory method. The upper limits of strain that different monolayers and heterojunctions can withstand were studied. The monolayers ZrSe2 and ZrS2 can withstand up to 8% biaxial tensile strain, and the ZrS2/ZrSe2 heterojunction can withstand up to 6% biaxial tensile strain. In addition, the van der Waals force of the heterojunction may cause phonon tearing in the vertical direction. The application of biaxial tensile strain can adjust the thermal properties of the system to a large extent, which is similar to the strain effect in the pristine case. When the temperature rises, the entropy enthalpy of the three structures also gradually increases, the free energy gradually decreases, and the heat capacity of the system gradually increases until it tends to be stable. Taking single-layer ZrS2 as an example, we analyzed the change curve of thermal properties of single-layer ZrS2 under tensile strain. The results show that with the gradual increase of strain, the crystal's entropy, enthalpy, and free energy change differently. In addition, the heat capacity increases slowly under high temperatures. When all systems reach the limit strain, the phonon spectrum appears to have an imaginary frequency, and the thermal properties decrease significantly. METHODS This paper uses the first-principle calculation method based on density functional theory, and the PBE exchange-correlation function based on generalized gradient approximation (GGA) is selected for a specific calculation. The density functional perturbation theory (DFPT) calculates the full kinetic matrix. Because the lattice constants of ZrS2 and ZrSe2 are similar and have similar periodicity, the corresponding unit cells are used for structural optimization and property calculation. The Brillouin zone is integrated using the K points generated by the Monkhorst-pack method. For single-layers ZrS2 and ZrSe2, 8 × 8 × 1 K-point grid is selected, and for ZrS2/ZrSe2 heterojunction, 8 × 8 × 2 K-point grid is selected. A vacuum layer of 30 Å was added in the vertical direction to avoid interlayer interaction. The non-conservative pseudopotential method is used to optimize the structure, and the optimization convergence is set as follows: the cutoff energy is set to 700 eV, the convergence threshold of the maximum force between atoms is 0.01 eV/Å, the convergence threshold of the maximum energy change is set to 1 × 10-9 eV, and the convergence threshold of the maximum displacement is 0.001 Å.
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Affiliation(s)
- Yanshen Zhao
- School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, 110870, China
| | - Lu Yang
- School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, 110870, China.
| | - Huaidong Liu
- School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, 110870, China
| | - Shihang Sun
- School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, 110870, China
| | - Xingbin Wei
- School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang, 110870, China
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4
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Vincent Mercy E, Srinivasan D, Marasamy L. Emerging BaZrS 3 and Ba(Zr,Ti)S 3 Chalcogenide Perovskite Solar Cells: A Numerical Approach Toward Device Engineering and Unlocking Efficiency. ACS OMEGA 2024; 9:4359-4376. [PMID: 38313502 PMCID: PMC10832013 DOI: 10.1021/acsomega.3c06627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 12/18/2023] [Accepted: 12/22/2023] [Indexed: 02/06/2024]
Abstract
BaZrS3 chalcogenide perovskites have emerged as a promising absorber due to their exceptional properties. However, there are no experimental reports on the applicability of BaZrS3 in photovoltaics. Thus, theoretical knowledge of device structure engineering is essential for its successful fabrication. In this regard, we have proposed various BaZrS3 device configurations by altering 12 electron transport layers (ETLs) in combination with 13 hole transport layers (HTLs) using SCAPS-1D, wherein a total of 782 devices are simulated by tuning the thickness, carrier concentration, and defect density of BaZrS3, ETLs, and HTLs. Interestingly, the absorber's thickness optimization enhanced the absorption in the device by 2.31 times, elevating the generation rate of charge carriers, while the increase in its carrier concentration boosted the built-in potential from 0.8 to 1.68 V, reducing the accumulation of charge carriers at the interfaces. Notably, on further optimization of ETL and HTL combinations, the best power conversion efficiency (PCE) of 28.08% is achieved for FTO/ZrS2/BaZrS3/SnS/Au, occurring due to the suppressed barrier height of 0.1 eV at the ZrS2/BaZrS3 interface and degenerate behavior of SnS, which increased charge carrier transportation and conductivity of the devices. Upon optimizing the work function, an ohmic contact is achieved for Pt, boosting the PCE to 28.17%. Finally, the impact of Ti alloying on BaZrS3 properties is examined on the champion FTO/ZrS2/BaZrS3/SnS/Pt device where the maximum PCE of 32.58% is obtained for Ba(Zr0.96,Ti0.04)S3 at a thickness of 700 nm due to extended absorption in the NIR region. Thus, this work opens doors to researchers for the experimental realization of high PCE in BaZrS3 devices.
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Affiliation(s)
- Eupsy
Navis Vincent Mercy
- Facultad de Química,
Materiales-Energía, Universidad Autónoma
de Querétaro, Santiago
de Querétaro, Querétaro C.P. 76010, México
| | - Dhineshkumar Srinivasan
- Facultad de Química,
Materiales-Energía, Universidad Autónoma
de Querétaro, Santiago
de Querétaro, Querétaro C.P. 76010, México
| | - Latha Marasamy
- Facultad de Química,
Materiales-Energía, Universidad Autónoma
de Querétaro, Santiago
de Querétaro, Querétaro C.P. 76010, México
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5
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Li Z, Zhou Z, Zhang J, Zhu C, Qiu P, Deng T, Xu F, Chen L, Shi X. Intrinsically Low Thermal Conductivity in a Novel Cu-S Modified ZrS 2 Compound with Asymmetric Bonding. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304718. [PMID: 37621034 DOI: 10.1002/smll.202304718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/25/2023] [Indexed: 08/26/2023]
Abstract
Materials with low thermal conductivity have received significant attention across various research fields, including thermal insulation materials, thermal barrier coatings, and thermoelectric materials. Exploring novel materials with intrinsically low thermal conductivity and investigating their phonon transport properties, chemical bonding, and atomic coordination are crucial. In this study, a novel ternary sulfide is successfully discovered, Cu2 ZrS3 , which is achieved by introducing copper ions into both the interlayer and intralayer of ZrS2 . The resulting structure encompasses various coordination forms within each layer, such as [CuS4 ], [ZrS6 ], and [CuS3 ], leading to pronounced phonon anharmonicity induced by the asymmetric bonding of tri-coordinated Cu atoms within the [ZrS6 ] layer. As a result, Cu2 ZrS3 exhibits intrinsically low lattice thermal conductivity (κL ) of about 0.83 W m-1 K-1 at 300 K and 0.35 W m-1 K-1 at 683 K, which are in the exceptionally low level among sulfides. In comparison to the conventional approach of inserting guests between layers, the substitution of atoms within layers provides a novel and effective strategy for designing low κL materials in transition metal dichalcogenides (TMDCs).
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Affiliation(s)
- Zhi Li
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhengyang Zhou
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Beijing National Laboratory for Molecular Sciences, Beijing, 100190, China
| | - Jiawei Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Chenxi Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Pengfei Qiu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Tingting Deng
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Fangfang Xu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Lidong Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xun Shi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
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6
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Yang L, Jaramillo R, Kalia RK, Nakano A, Vashishta P. Pressure-Controlled Layer-by-Layer to Continuous Oxidation of ZrS 2(001) Surface. ACS NANO 2023; 17:7576-7583. [PMID: 37053468 DOI: 10.1021/acsnano.2c12724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Understanding oxidation mechanisms of layered semiconducting transition-metal dichalcogenides (TMDC) is important not only for controlling native oxide formation but also for synthesis of oxide and oxysulfide products. Here, reactive molecular dynamics simulations show that oxygen partial pressure controls not only the ZrS2 oxidation rate but also the oxide morphology and quality. We find a transition from layer-by-layer oxidation to amorphous-oxide-mediated continuous oxidation as the oxidation progresses, where different pressures selectively expose different oxidation stages within a given time window. While the kinetics of the fast continuous oxidation stage is well described by the conventional Deal-Grove model, the layer-by-layer oxidation stage is dictated by reactive bond-switching mechanisms. This work provides atomistic details and a potential foundation for rational pressure-controlled oxidation of TMDC materials.
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Affiliation(s)
- Liqiu Yang
- Collaboratory for Advanced Computing and Simulation, University of Southern California, Los Angeles, California 90089-0242, United States
| | - Rafael Jaramillo
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Rajiv K Kalia
- Collaboratory for Advanced Computing and Simulation, University of Southern California, Los Angeles, California 90089-0242, United States
| | - Aiichiro Nakano
- Collaboratory for Advanced Computing and Simulation, University of Southern California, Los Angeles, California 90089-0242, United States
| | - Priya Vashishta
- Collaboratory for Advanced Computing and Simulation, University of Southern California, Los Angeles, California 90089-0242, United States
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7
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Chen G, Bao W, Wang Z, Tang D. Tensile strain and finite size modulation of low lattice thermal conductivity in monolayer TMDCs (HfSe 2 and ZrS 2) from first-principles: a comparative study. Phys Chem Chem Phys 2023; 25:9225-9237. [PMID: 36919457 DOI: 10.1039/d2cp05432a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
With excellent physical and chemical properties, 2D TMDC materials have been widely used in engineering applications, but they inevitably suffer from the dual effects of strain and device size. As typical 2D TMDCs, HfSe2 and ZrS2 are reported to have excellent thermoelectric properties. Thermal transport properties have great significance for exerting the performance of materials, ensuring device lifetime and stable operation, but current research is not detailed enough. Here, first-principles combined with the phonon Boltzmann transport equation are used to study the phonon transport inside monolayer HfSe2 and ZrS2 under tensile strain and finite size, and explore the band structure properties. Our research shows that they have similar phonon dispersion curve structures, and the band gap of HfSe2 increases monotonically with the increase of tensile strain, while the bandgap of ZrS2 increases and then decreases with the increase of tensile strain. Thermal conductivity has obvious strain dependence: with the increase of tensile strain, the thermal conductivity of HfSe2 gradually decreases, while that of ZrS2 increases slightly, and then gradually decreases. Reducing the system size can limit the contribution of phonons with a long mean free path, significantly decreasing thermal conductivity through the controlling effect of tensile strain. The mode contribution of thermal conductivity is systematically investigated, and anharmonic properties including mode and frequency-level scattering rates, group velocity and Grüneisen parameters are used to explain the associated mechanism. Phonon scattering processes and channels in various cases are discussed in detail. Our research provides a detailed understanding of the phonon transport and electronic structural properties of low thermal conductivity monolayers of HfSe2 and ZrS2, and further completes the study of thermal transport of the two materials under strain and size tuning, which will provide a foundation for further popularization and application.
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Affiliation(s)
- Guofu Chen
- Department of Energy and Power Engineering, China University of Petroleum, Qingdao 266580, China.
| | - Wenlong Bao
- Department of Energy and Power Engineering, China University of Petroleum, Qingdao 266580, China.
| | - Zhaoliang Wang
- Department of Energy and Power Engineering, China University of Petroleum, Qingdao 266580, China.
| | - Dawei Tang
- Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China
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8
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Alsulami A, Alharbi M, Alsaffar F, Alolaiyan O, Aljalham G, Albawardi S, Alsaggaf S, Alamri F, Tabbakh TA, Amer MR. Lattice Transformation from 2D to Quasi 1D and Phonon Properties of Exfoliated ZrS 2 and ZrSe 2. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205763. [PMID: 36585385 DOI: 10.1002/smll.202205763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Recent reports on thermal and thermoelectric properties of emerging 2D materials have shown promising results. Among these materials are Zirconium-based chalcogenides such as zirconium disulfide (ZrS2 ), zirconium diselenide (ZrSe2 ), zirconium trisulfide (ZrS3 ), and zirconium triselenide (ZrSe3 ). Here, the thermal properties of these materials are investigated using confocal Raman spectroscopy. Two different and distinctive Raman signatures of exfoliated ZrX2 (where X = S or Se) are observed. For 2D-ZrX2 , Raman modes are in alignment with those reported in literature. However, for quasi 1D-ZrX2 , Raman modes are identical to exfoliated ZrX3 nanosheets, indicating a major lattice transformation from 2D to quasi-1D. Raman temperature dependence for ZrX2 are also measured. Most Raman modes exhibit a linear downshift dependence with increasing temperature. However, for 2D-ZrS2 , a blueshift for A1g mode is detected with increasing temperature. Finally, phonon dynamics under optical heating for ZrX2 are measured. Based on these measurements, the calculated thermal conductivity and the interfacial thermal conductance indicate lower interfacial thermal conductance for quasi 1D-ZrX2 compared to 2D-ZrX2 , which can be attributed to the phonon confinement in 1D. The results demonstrate exceptional thermal properties for Zirconium-based materials, making them ideal for thermoelectric device applications and future thermal management strategies.
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Affiliation(s)
- Awsaf Alsulami
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Majed Alharbi
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Fadhel Alsaffar
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Olaiyan Alolaiyan
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Ghadeer Aljalham
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Shahad Albawardi
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Sarah Alsaggaf
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Faisal Alamri
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Thamer A Tabbakh
- National Center for Nanotechnology, Materials Science Institute, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
| | - Moh R Amer
- Center of Excellence for Green Nanotechnologies, Joint Centers of Excellence Program, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia
- Department of Electrical and Computer Engineering, University of California Los Angeles, Los Angeles, CA, 90095, USA
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Remarkable-cycle-performance β-bismuthene/graphene heterostructure anode for Li-ion battery. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.11.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Abstract
The quest for a clean, renewable and sustainable energy future has been highly sought for by the scientific community over the last four decades. Photocatalytic water splitting is a very promising technology to proffer a solution to present day environmental pollution and energy crises by generating hydrogen fuel through a “green route” without environmental pollution. Transition metal dichalcogenides (TMDCs) have outstanding properties which make them show great potential as effective co-catalysts with photocatalytic materials such as TiO2, ZnO and CdS for photocatalytic water splitting. Integration of TMDCs with a photocatalyst such as TiO2 provides novel nanohybrid composite materials with outstanding characteristics. In this review, we present the current state of research in the application of TMDCs in photocatalytic water splitting. Three main aspects which consider their properties, advances in the synthesis routes of layered TMDCs and their composites as well as their photocatalytic performances in the water splitting reaction are discussed. Finally, we raise some challenges and perspectives in their future application as materials for water-splitting photocatalysts.
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11
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Strain-tuned mechanical, electronic, and optoelectronic properties of two-dimensional transition metal sulfides ZrS 2: a first-principles study. J Mol Model 2022; 28:63. [PMID: 35182241 DOI: 10.1007/s00894-022-05052-8] [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: 08/13/2021] [Accepted: 02/10/2022] [Indexed: 10/19/2022]
Abstract
Two-dimensional semiconductor material zirconium disulfide (ZrS2) monolayer is a new promising material with good prospects for nanoscale applications. Recently, a new zirconium disulfide (ZrS2) monolayer with a space group of 59_Pmmn has been successfully predicted. Using first-principles calculations, this new monolayer ZrS2 structure is obtained with stable indirect bandgaps of 0.65 eV and 1.46 eV at the DFT-PBE (HSE06) functional levels, respectively. Strain engineering studies on the ZrS2 monolayer show effective bandgap modulation. The bandgap shows a nearly linear regularity from narrow to wide under strain (ranged from - 6 to + 8%). Young's modulus of elasticity of ZrS2 along the tensile directions (x-axis and y-axis) is 83.63 (N/m) and 63.61 (N/m) with Poisson's ratios of 0.09 and 0.07, respectively. The results of carrier mobility show that the electron mobility along the y-axis can reach 1.32 × 103 cm2 V-1 s-1. Besides, the order of magnitude of the light absorption coefficient in the ultraviolet spectral region is calculated to reach 2.0 × 105 cm-1 for ZrS2 monolayers. Moreover, the bandgap and band edge position of Pmmn-ZrS2 can satisfy the redox potentials of photocatalytic water splitting by strain regulating. The results indicate that the new two-dimensional Pmmn-ZrS2 monolayer is a potential material for photovoltaic devices and photocatalytic water decomposition.
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12
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Islam MR, Islam AJ, Liu K, Wang Z, Qu S, Wang Z. Strain engineering on the electronic, phonon, and optical properties of monolayer boron antimonide. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Opoku F, Akoto O, Oppong SOB, Adimado AA. Two-dimensional layered type-II MS 2/BiOCl (M = Zr, Hf) van der Waals heterostructures: promising photocatalysts for hydrogen generation. NEW J CHEM 2021. [DOI: 10.1039/d1nj03867b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Our theoretical findings reveal that in-plane biaxial strain tunes the bandgap and induces a transition from indirect to direct semiconductor.
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Affiliation(s)
- Francis Opoku
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Osei Akoto
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | - Anthony Apeke Adimado
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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14
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Optical and Thermoelectric Properties of Surface-Oxidation Sensitive Layered Zirconium Dichalcogenides ZrS2−xSex (x = 0, 1, 2) Crystals Grown by Chemical Vapor Transport. CRYSTALS 2020. [DOI: 10.3390/cryst10040327] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this work, structure, optical, and thermoelectric properties of layered ZrS2−xSex single crystals with selenium composition of x = 0, 1, and 2 were examined. Single crystals of zirconium dichalcogenides layer compounds were grown by chemical vapor transport method using I2 as the transport agent. X-ray diffraction (XRD) and high-resolution transmission electron microscope (HRTEM) results indicated that ZrS2−xSex (x = 0, 1, and 2) were crystalized in hexagonal CdI2 structure with one-layer trigonal (1T) stacking type. X-ray photoelectron and energy dispersive X-ray measurements revealed oxidation sensitive behavior of the chalcogenides series. Transmittance and optical absorption showed an indirect optical gap of about 1.78 eV, 1.32 eV, and 1.12 eV for the ZrS2−xSex with x = 0, 1, and 2, respectively. From the result of thermoelectric experiment, ZrSe2 owns the highest figure-of merit (ZT) of ~0.085 among the surface-oxidized ZrS2−xSex series layer crystals at 300 K. The ZT values of the ZrS2−xSex (x = 0, 1, and 2) series also reveal increase with the increase of Se content owing to the increase of carrier concentration and mobility in the highly Se-incorporated zirconium dichalcogenides with surface states.
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15
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Electronic and optical properties of the ZrS2/HfSe2 van der Waals heterobilayer with native type-II band alignment. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Zhang Y, Yao Y, Sendeku MG, Yin L, Zhan X, Wang F, Wang Z, He J. Recent Progress in CVD Growth of 2D Transition Metal Dichalcogenides and Related Heterostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901694. [PMID: 31402526 DOI: 10.1002/adma.201901694] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/20/2019] [Indexed: 06/10/2023]
Abstract
In recent years, 2D layered materials have received considerable research interest on account of their substantial material systems and unique physicochemical properties. Among them, 2D layered transition metal dichalcogenides (TMDs), a star family member, have already been explored over the last few years and have exhibited excellent performance in electronics, catalysis, and other related fields. However, to fulfill the requirement for practical application, the batch production of 2D TMDs is essential. Recently, the chemical vapor deposition (CVD) technique was considered as an elegant alternative for successfully growing 2D TMDs and their heterostructures. The latest research advances in the controllable synthesis of 2D TMDs and related heterostructures/superlattices via the CVD approach are illustrated here. The controlled growth behavior, preparation strategies, and breakthroughs on the synthesis of new 2D TMDs and their heterostructures, as well as their unique physical phenomena, are also discussed. Recent progress on the application of CVD-grown 2D materials is revealed with particular attention to electronics/optoelectronic devices and catalysts. Finally, the challenges and future prospects are considered regarding the current development of 2D TMDs and related heterostructures.
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Affiliation(s)
- Yu Zhang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Yuyu Yao
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- Sino-Danish College, University of Chinese Academy of Science, Beijing, 100049, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing, 100049, China
| | - Marshet Getaye Sendeku
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing, 100049, China
| | - Lei Yin
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing, 100049, China
| | - Xueying Zhan
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Feng Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Zhenxing Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Jun He
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- School of Physics and Technology, Wuhan University, Wuhan, 430072, China
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17
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Vu TV, Tong HD, Tran DP, Binh NTT, Nguyen CV, Phuc HV, Do HM, Hieu NN. Electronic and optical properties of Janus ZrSSe by density functional theory. RSC Adv 2019; 9:41058-41065. [PMID: 35540071 PMCID: PMC9076358 DOI: 10.1039/c9ra08605f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 11/28/2019] [Indexed: 11/29/2022] Open
Abstract
In the present work, we investigate systematically the electronic and optical properties of Janus ZrSSe using first-principles calculations. Our calculations demonstrate that the Janus ZrSSe monolayer is an indirect semiconductor at equilibrium. The band gap of the Janus ZrSSe is 1.341 eV using the Heyd–Scuseria–Ernzerhof hybrid functional, larger than the band gap of ZrSe2 monolayer and smaller than that of ZrS2 monolayer. Based on the analysis of the band edge alignment, we confirm that the Janus ZrSSe monolayer possesses photocatalytic activities that can be used in water splitting applications. While strain engineering plays an important role in modulating the electronic properties and optical characteristics of the Janus ZrSSe monolayer, the influence of the external electric field on these properties is negligible. The biaxial strain, εb, has significantly changed the band of the Janus ZrSSe monolayer, and particularly, the semiconductor–metal phase transition which occurred at εb = 7%. The Janus ZrSSe monolayer can absorb light in both visible and ultraviolet regions. Also, the biaxial strain has shifted the first optical gap of the Janus ZrSSe monolayer. Our findings provide additional information for the prospect of applying the Janus ZrSSe monolayer in nanoelectronic devices, especially in water splitting technology. In the present work, we investigate systematically the electronic and optical properties of Janus ZrSSe using first-principles calculations.![]()
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Affiliation(s)
- Tuan V. Vu
- Division of Computational Physics
- Institute for Computational Science
- Ton Duc Thang University
- Ho Chi Minh City
- Viet Nam
| | - Hien D. Tong
- Faculty of Engineering
- Vietnamese-German University
- Binh Duong
- Viet Nam
| | - Duy Phu Tran
- Future Industries Institute
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
- University of South Australia
- Australia
| | - Nguyen T. T. Binh
- Institute of Research and Development
- Duy Tan University
- Da Nang 550000
- Viet Nam
| | - Chuong V. Nguyen
- Department of Materials Science and Engineering
- Le Quy Don Technical University
- Ha Noi 100000
- Viet Nam
| | - Huynh V. Phuc
- Division of Theoretical Physics
- Dong Thap University
- Dong Thap
- Viet Nam
| | - Hoat M. Do
- Computational Laboratory for Advanced Materials and Structures
- Advanced Institute of Materials Science
- Ton Duc Thang University
- Ho Chi Minh City
- Viet Nam
| | - Nguyen N. Hieu
- Institute of Research and Development
- Duy Tan University
- Da Nang 550000
- Viet Nam
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18
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Xiang H, Xu B, Zhao W, Xia Y, Yin J, Zhang X, Liu Z. The magnetism of 1T-MX2 (M = Zr, Hf; X = S, Se) monolayers by hole doping. RSC Adv 2019; 9:13561-13566. [PMID: 35519557 PMCID: PMC9063905 DOI: 10.1039/c9ra01218d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 04/16/2019] [Indexed: 11/22/2022] Open
Abstract
The magnetism of hole doped 1T-MX2 (M = Zr, Hf; X = S, Se) monolayers is systematically studied by using first principles density functional calculations. The pristine 1T-MX2 monolayers are semiconductors with nonmagnetic ground states, which can be transformed to ferromagnetic states by the approach of hole doping. For the unstrained monolayers, the spontaneous magnetization appears once above the critical hole density (1014 cm−2), where the p orbital of S or Se atoms contributes the most of the magnetic moment. As the tensile strains exceed 4%, the magnetic moments per hole of ZrS2 and HfS2 monolayers increase sharply to a saturated value with increasing hole density, implying obvious advantages over the unstrained monolayers. The phonon dispersion calculations for the strained ZrS2 and HfS2 monolayers indicate that they can keep the dynamical stability by hole doping. Furthermore, we propose that the fluorine atom modified ZrS2 monolayer could obtain stable ferromagnetism. The magnetism in hole doped 1T-MX2 (M = Zr, Hf; X = S, Se) monolayers has great potential for developing spintronic devices with desirable applications. The magnetism of zirconium and hafnium dichalcogenides by hole doping is studied by using first principles calculations.![]()
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Affiliation(s)
- Hui Xiang
- School of Mathematics and Physics
- Hubei Polytechnic University
- Huangshi
- China
- National Laboratory of Solid State Microstructures
| | - Bo Xu
- School of Sciences
- Key Laboratory of Biomedical Functional Materials
- China Pharmaceutical University
- Nanjing
- China
| | - Weiqian Zhao
- School of Mathematics and Physics
- Hubei Polytechnic University
- Huangshi
- China
| | - Yidong Xia
- National Laboratory of Solid State Microstructures
- Department of Materials Science and Engineering
- Nanjing University
- Nanjing
- China
| | - Jiang Yin
- National Laboratory of Solid State Microstructures
- Department of Materials Science and Engineering
- Nanjing University
- Nanjing
- China
| | - Xiaofei Zhang
- School of Mathematics and Physics
- Hubei Polytechnic University
- Huangshi
- China
| | - Zhiguo Liu
- National Laboratory of Solid State Microstructures
- Department of Materials Science and Engineering
- Nanjing University
- Nanjing
- China
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19
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Wang Z, Sun YY, Abdelwahab I, Cao L, Yu W, Ju H, Zhu J, Fu W, Chu L, Xu H, Loh KP. Surface-Limited Superconducting Phase Transition on 1 T-TaS 2. ACS NANO 2018; 12:12619-12628. [PMID: 30403840 DOI: 10.1021/acsnano.8b07379] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Controlling superconducting phase transition on a two-dimensional (2D) material is of great fundamental and technological interest from the viewpoint of making 2D resistance-free electronic circuits. Here, we demonstrate that a 1 T-to-2 H phase transition can be induced on the topmost monolayer of bulk (<100 nm thick) 1 T-TaS2 by thermal annealing. The monolayer 2 H-TaS2 on bulk 1 T-TaS2 exhibits a superconducting transition temperature ( Tc) of 2.1 K, which is significantly enhanced compared to that of bulk 2 H-TaS2. Scanning tunneling microscopy measurements reveal a 3 × 3 charge density wave (CDW) in the phase-switched monolayer at 4.5 K. The enhanced Tc is explained by the suppressed 3 × 3 CDW and a charge-transfer doping from the 1 T substrate. We further show that the monolayer 2 H-TaS2 could be switched back to 1 T phase by applying a voltage pulse. The observed surface-limited superconducting phase transition offers a convenient way to prepare robust 2D superconductivity on bulk 1 T-TaS2 crystal, thereby bypassing the need to exfoliate monolayer samples.
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Affiliation(s)
- Ziying Wang
- Department of Chemistry, Centre for Advanced 2D Materials , National University of Singapore , Singapore 117543
| | - Yi-Yang Sun
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 201899 , China
| | - Ibrahim Abdelwahab
- Department of Chemistry, Centre for Advanced 2D Materials , National University of Singapore , Singapore 117543
| | - Liang Cao
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science , Changchun 130033 , China
| | - Wei Yu
- Department of Chemistry, Centre for Advanced 2D Materials , National University of Singapore , Singapore 117543
| | - Huanxin Ju
- National Synchrotron Radiation Laboratory , University of Science and Technology of China , Hefei 230026 , China
| | - Junfa Zhu
- National Synchrotron Radiation Laboratory , University of Science and Technology of China , Hefei 230026 , China
| | - Wei Fu
- Department of Chemistry, Centre for Advanced 2D Materials , National University of Singapore , Singapore 117543
| | - Leiqiang Chu
- Department of Chemistry, Centre for Advanced 2D Materials , National University of Singapore , Singapore 117543
| | - Hai Xu
- Department of Chemistry, Centre for Advanced 2D Materials , National University of Singapore , Singapore 117543
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science , Changchun 130033 , China
| | - Kian Ping Loh
- Department of Chemistry, Centre for Advanced 2D Materials , National University of Singapore , Singapore 117543
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20
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Zhai H, Qin Z, Sun D, Wang J, Liu C, Min N, Li Q. Pressure-induced phase transition, metallization and superconductivity in ZrS 2. Phys Chem Chem Phys 2018; 20:23656-23663. [PMID: 30191245 DOI: 10.1039/c8cp04271c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zirconium disulfide (ZrS2) is an exemplary case among layered materials that exhibit unusual electronic and vibrational properties, with applications in potential photovoltaic and single-layer transistor materials. Here, we examine the effect of pressure on the structural stability, phonon dispersion, electronic properties and electron-phonon coupling of ZrS2 using first-principles calculations. Our results unravel that ZrS2 undergoes several pressure-induced phase transformations from the ambient-pressure P3[combining macron]m1 structure to a monoclinic P21/m structure at 2.0 GPa, to an orthorhombic Immm structure at 5.6 GPa, and to a tetragonal I4/mmm structure at 25.0 GPa. The electronic band calculations indicate that the layered P3[combining macron]m1 and P21/m structures are narrow-gap semiconductors. The gaps of the above two phases, which are normal semiconductors, decrease with pressure. Our results show that ZrS2 reaches the metallic state by a P21/m → Immm phase transition and keeps its metallic state in the I4/mmm phase. A pressure-driven evolution of the topological Fermi surface has been uncovered. The electron-phonon coupling results identify superconducting states in both metallic Immm and I4/mmm structures. Our research shows that pressure is efficient in the modulation of the bonding states, crystal structures and electronic properties of ZrS2, which will stimulate further high-pressure structural and conductive measurements.
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Affiliation(s)
- Hang Zhai
- Key Laboratory of Automobile Materials of MOE, State Key Laboratory of Superhard Materials, and Department of Materials Science, Jilin University, Changchun 130012, China.
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21
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Rehman SU, Ding ZJ. Enhanced electronic and optical properties of three TMD heterobilayers. Phys Chem Chem Phys 2018; 20:16604-16614. [PMID: 29873344 DOI: 10.1039/c8cp02995d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The physical and chemical properties of monolayers can be tuned by selective combinations so as to be useful for device applications. Here we present a density functional theory study on the structural, electronic and optical properties of three transition metal dichalcogenide (TMD) heterobilayers, ZrS2/HfS2, ZrSe2/HfSe2 and SnS2/SnSe2. These heterobilayers are predicted to be energetically and dynamically stable structures. The band structure calculation result shows that ZrS2/HfS2, ZrSe2/HfSe2 and SnS2/SnSe2 heterobilayers are semiconductors with indirect band gaps. The efficient charge carrier separation in ZrS2/HfS2 and ZrSe2/HfSe2 heterobilayers indicates that they can be employed in energy harvesting devices. Contrary to the previous report on the ZrS2/HfS2 heterobilayer, we found it to have an intrinsic type-II band alignment which is required in p-n junction diodes and tunnel field effect transistors, and the same behavior was observed in ZrSe2/HfSe2 and SnS2/SnSe2 for the first time. The ZrS2/HfS2 and ZrSe2/HfSe2 heterobilayers reveal enhanced optical absorption both in the ultraviolet and visible regions as compared to their respective monolayers, whereas the parallel and perpendicular part of the optical absorption of the SnS2/SnSe2 heterobilayer revealed an anisotropic behavior; the perpendicular part is largely improved in the higher energy region, and the parallel part of the optical absorption is improved in the ultraviolet region.
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Affiliation(s)
- Shafiq Ur Rehman
- Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.
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22
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Lv HY, Lu WJ, Li JY, Xiao RC, Wei MJ, Tong P, Zhu XB, Sun YP. Edge-controlled half-metallic ferromagnetism and direct-gap semiconductivity in ZrS2 nanoribbons. RSC Adv 2017. [DOI: 10.1039/c7ra05362b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Intrinsic half-metallic ferromagnetism and direct-gap semiconductivity are predicted in ZrS2 nanoribbons with different edge configurations.
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Affiliation(s)
- H. Y. Lv
- Key Laboratory of Materials Physics
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
- People’s Republic of China
| | - W. J. Lu
- Key Laboratory of Materials Physics
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
- People’s Republic of China
| | - J. Y. Li
- Key Laboratory of Materials Physics
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
- People’s Republic of China
| | - R. C. Xiao
- Key Laboratory of Materials Physics
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
- People’s Republic of China
| | - M. J. Wei
- Key Laboratory of Materials Physics
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
- People’s Republic of China
| | - P. Tong
- Key Laboratory of Materials Physics
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
- People’s Republic of China
| | - X. B. Zhu
- Key Laboratory of Materials Physics
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
- People’s Republic of China
| | - Y. P. Sun
- Key Laboratory of Materials Physics
- Institute of Solid State Physics
- Chinese Academy of Sciences
- Hefei 230031
- People’s Republic of China
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23
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Yuan X, Yang M, Wang L, Li Y. Structural stability and intriguing electronic properties of two-dimensional transition metal dichalcogenide alloys. Phys Chem Chem Phys 2017; 19:13846-13854. [DOI: 10.1039/c7cp01727h] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel heterolayer and alternating structures were proposed for transition metal dichalcogenide alloys with intriguing electronic properties.
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Affiliation(s)
- Xiao Yuan
- Functional Nano & Soft Materials Laboratory (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Mingye Yang
- Functional Nano & Soft Materials Laboratory (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Lu Wang
- Functional Nano & Soft Materials Laboratory (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Youyong Li
- Functional Nano & Soft Materials Laboratory (FUNSOM)
- Soochow University
- Suzhou
- China
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24
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Si Y, Wu HY, Yang HM, Huang WQ, Yang K, Peng P, Huang GF. Dramatically Enhanced Visible Light Response of Monolayer ZrS 2 via Non-covalent Modification by Double-Ring Tubular B 20 Cluster. NANOSCALE RESEARCH LETTERS 2016; 11:495. [PMID: 27832524 PMCID: PMC5104703 DOI: 10.1186/s11671-016-1719-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 11/04/2016] [Indexed: 06/01/2023]
Abstract
The ability to strongly absorb light is central to solar energy conversion. We demonstrate here that the hybrid of monolayer ZrS2 and double-ring tubular B20 cluster exhibits dramatically enhanced light absorption in the entire visible spectrum. The unique near-gap electronic structure and large built-in potential at the interface will lead to the robust separation of photoexcited charge carriers in the hybrid. Interestingly, some Zr and S atoms, which are catalytically inert in isolated monolayer ZrS2, turn into catalytic active sites. The dramatically enhanced absorption in the entire visible light makes the ZrS2/B20 hybrid having great applications in photocatalysis or photodetection.
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Affiliation(s)
- Yuan Si
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Hong-Yu Wu
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Hao-Ming Yang
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Wei-Qing Huang
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China.
| | - Ke Yang
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China
| | - Ping Peng
- School of Materials Science and Engineering, Hunan University, Changsha, 410082, China
| | - Gui-Fang Huang
- Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha, 410082, China.
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25
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Raman Spectra of ZrS2 and ZrSe2 from Bulk to Atomically Thin Layers. APPLIED SCIENCES-BASEL 2016. [DOI: 10.3390/app6090264] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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26
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Ao L, Pham A, Xiao HY, Zu XT, Li S. Theoretical prediction of long-range ferromagnetism in transition-metal atom-doped d 0 dichalcogenide single layers SnS 2 and ZrS 2. Phys Chem Chem Phys 2016; 18:25151-25160. [PMID: 27711385 DOI: 10.1039/c6cp02206e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have systematically investigated the effects of transition-metal (TM) atom (Sc-Zn) doping in 2D d0 materials SnS2 and ZrS2via the density functional theory method. Our results demonstrate that the conductivity and magnetism of SnS2 and ZrS2 can be engineered to spin-polarize half-metal/metal with appropriate TM dopants. For both materials, nontrivial magnetic interactions can be induced by V/Cr/Mn/Fe/Co doping. Specifically, the various behaviors of the magnetic exchanges in TM-doped SnS2 and ZrS2 are due to the competition between the super-exchange, the double exchange, and the p-d exchange interactions, which are dependent on the dopants' chemistry and spatial positions. Thus, our results give potential guidance for future experiments to create functionalized d0 nano-electronic devices.
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Affiliation(s)
- L Ao
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China and School of Material Science and Engineering, University of New South Wales, Sydney 2052, Australia.
| | - A Pham
- School of Material Science and Engineering, University of New South Wales, Sydney 2052, Australia.
| | - H Y Xiao
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - X T Zu
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - S Li
- School of Material Science and Engineering, University of New South Wales, Sydney 2052, Australia.
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27
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Ao L, Pham A, Xiao HY, Zu XT, Li S. Engineering the electronic and magnetic properties of d(0) 2D dichalcogenide materials through vacancy doping and lattice strains. Phys Chem Chem Phys 2016; 18:7163-8. [PMID: 26888010 DOI: 10.1039/c5cp07548c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have systematically investigated the effects of different vacancy defects in 2D d(0) materials SnS2 and ZrS2 using first principles calculations. The theoretical results show that the single cation vacancy and the vacancy complex like V-SnS6 can induce large magnetic moments (3-4 μB) in these single layer materials. Other defects, such as V-SnS3, V-S, V-ZrS3 and V-ZrS6, can result in n-type conductivity. In addition, the ab initio studies also reveal that the magnetic and conductive properties from the cation vacancy and the defect complex V-SnS6 can be modified using the compressive/tensile strain of the in-plane lattices. Specifically, the V-Zr doped ZrS2 monolayer can be tuned from a ferromagnetic semiconductor to a metallic/half-metallic material with decreasing/increasing magnetic moments depending on the external compressive/tensile strains. On the other hand, the semiconducting and magnetic properties of V-Sn doped SnS2 is preserved under different lattice compression and tension. For the defect complex like V-SnS6, only the lattice compression can tune the magnetic moments in SnS2. As a result, by manipulating the fabrication parameters, the magnetic and conductive properties of SnS2 and ZrS2 can be tuned without the need for chemical doping.
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Affiliation(s)
- L Ao
- School of Material Science and Engineering, University of New South Wales, Sydney 2052, Australia and School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - A Pham
- School of Material Science and Engineering, University of New South Wales, Sydney 2052, Australia
| | - H Y Xiao
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - X T Zu
- School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - S Li
- School of Material Science and Engineering, University of New South Wales, Sydney 2052, Australia
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28
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Abstract
N substituting for a S atom may offer effective p-type carriers in ZrS2 nanosheets and be realized under Zr-rich experimental conditions.
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Affiliation(s)
- Yuping Wang
- Department of Physics
- Xinxiang University
- Xinxiang
- China
| | - Zhenduo Geng
- Department of Physics
- Henan Normal University
- Xinxiang
- China
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29
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Zhou W, Umezawa N. Insight into the band structure engineering of single-layer SnS2 with in-plane biaxial strain. Phys Chem Chem Phys 2016; 18:7860-5. [DOI: 10.1039/c6cp00039h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effects of in-plane biaxial strain on the electronic structure of a photofunctional material, single-layer SnS2, were systematically investigated using hybrid density functional calculations.
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Affiliation(s)
- Wei Zhou
- Department of Applied Physics
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology
- Faculty of Science
- Tianjin University
- Tianjin 300072
| | - Naoto Umezawa
- Environmental Remediation Materials Unit
- National Institute for Materials Science
- Tsukuba
- Japan
- PRESTO
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30
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Zhang M, Zhu Y, Wang X, Feng Q, Qiao S, Wen W, Chen Y, Cui M, Zhang J, Cai C, Xie L. Controlled Synthesis of ZrS2 Monolayer and Few Layers on Hexagonal Boron Nitride. J Am Chem Soc 2015; 137:7051-4. [DOI: 10.1021/jacs.5b03807] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Mei Zhang
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Yiming Zhu
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
- Department
of Applied Physics, Chongqing University, Chongqing 401331, P. R. China
| | - Xinsheng Wang
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Qingliang Feng
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
- Center
for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons,
Beijing National Laboratory for Molecular Sciences, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Shanlin Qiao
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Wen Wen
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Yanfeng Chen
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Menghua Cui
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Jin Zhang
- Center
for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons,
Beijing National Laboratory for Molecular Sciences, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, P. R. China
| | - Congzhong Cai
- Department
of Applied Physics, Chongqing University, Chongqing 401331, P. R. China
| | - Liming Xie
- CAS
Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
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31
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Tandem intercalation strategy for single-layer nanosheets as an effective alternative to conventional exfoliation processes. Nat Commun 2015; 6:5763. [PMID: 25575047 DOI: 10.1038/ncomms6763] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 11/05/2014] [Indexed: 01/10/2023] Open
Abstract
Simple and effective generation of transition metal chalcogenides (TMCs) in a single-layer form has been a challenging task. Here we present a tandem molecular intercalation (TMI) as a new exfoliation concept for producing single-layer TMCs from multi-layer colloidal TMC nanostructures in solution phase. TMI requires tandem Lewis base intercalates, where short 'initiator' molecules first intercalate into TMCs to open up the interlayer gap, and the long 'primary' molecules then bring the gap to full width so that a random mixture of intercalates overcomes the interlayer force. Spontaneous exfoliation then yields single-layer TMCs. The TMI process is uniquely advantageous because it works in a simple one-step process under safe and mild conditions (that is, room temperature without sonication or H2 generation). With the appropriate intercalates, we have successfully generated single-layer nanostructures of group IV (TiS2, ZrS2), group V (NbS2) and VI (WSe2, MoS2) TMCs.
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32
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Yu XF, Cheng JB, Liu ZB, Li QZ, Li WZ, Yang X, Xiao B. The band gap modulation of monolayer Ti2CO2 by strain. RSC Adv 2015. [DOI: 10.1039/c5ra01586c] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monolayer Ti2CO2: indirect–direct band gap transition under biaxial strain of ∼4% and uniaxial strain of ∼6%.
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Affiliation(s)
- Xue-fang Yu
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
| | - Jian-bo Cheng
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
| | - Zhen-bo Liu
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
| | - Qing-zhong Li
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
| | - Wen-zuo Li
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
| | - Xin Yang
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
| | - Bo Xiao
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
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33
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Wen Y, Zhu Y, Zhang S. Low temperature synthesis of ZrS2 nanoflakes and their catalytic activity. RSC Adv 2015. [DOI: 10.1039/c5ra12412c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ZrS2 nanoflakes of 10–30 nm were prepared via a gaseous reaction between ZrCl4 and S at as low as 800 °C.
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Affiliation(s)
- Yan Wen
- College of Engineering
- Mathematics and Physical Sciences
- University of Exeter
- Exeter
- UK
| | - Yanqiu Zhu
- College of Engineering
- Mathematics and Physical Sciences
- University of Exeter
- Exeter
- UK
| | - Shaowei Zhang
- College of Engineering
- Mathematics and Physical Sciences
- University of Exeter
- Exeter
- UK
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34
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Xu C, Brown PA, Shuford KL. Strain-induced semimetal-to-semiconductor transition and indirect-to-direct band gap transition in monolayer 1T-TiS2. RSC Adv 2015. [DOI: 10.1039/c5ra16877e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We have investigated the effect of uniform plane strain on the electronic properties of monolayer 1T-TiS2using first-principles calculations. With the appropriate tensile strain, the material properties can be transformed from a semimetal to a direct band gap semiconductor.
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Affiliation(s)
- Chengyong Xu
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
| | - Paul A. Brown
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
| | - Kevin L. Shuford
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
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35
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Kumar A, He H, Pandey R, Ahluwalia PK, Tankeshwar K. Pressure and electric field-induced metallization in the phase-engineered ZrX2(X = S, Se, Te) bilayers. Phys Chem Chem Phys 2015; 17:19215-21. [DOI: 10.1039/c5cp01445j] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Band-gap (Eg)vs.applied electric field (E) for T- and H-bilayers, showing complete metallization at the critical value of the electric field.
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Affiliation(s)
- Ashok Kumar
- Department of Physics
- Panjab University
- Chandigarh 160014
- India
| | - Haiying He
- Department of Physics and Astronomy
- Valparaiso University
- Valparaiso
- USA
| | - Ravindra Pandey
- Department of Physics
- Michigan Technological University
- Houghton
- USA
| | - P. K. Ahluwalia
- Department of Physics
- Himachal Pradesh University
- Shimla 171005
- India
| | - K. Tankeshwar
- Department of Physics
- Panjab University
- Chandigarh 160014
- India
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