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He T, Liu H, Zhang J, Yang Y, Jiang Y, Zhang Y, Feng J, Hu K. Ag-Doped MoSe 2/ZnO Heterojunctions: A Highly Responsive Gas-Sensitive Material for Selective Detection of NO Based on DFT Study. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2510. [PMID: 37764539 PMCID: PMC10536715 DOI: 10.3390/nano13182510] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/22/2023] [Accepted: 08/30/2023] [Indexed: 09/29/2023]
Abstract
In this work, the adsorption and sensing behavior of Ag-doped MoSe2/ZnO heterojunctions for H2, CH4, CO2, NO, CO, and C2H4 have been studied based on density functional theory (DFT). In gas adsorption analysis, the adsorption energy, adsorption distance, transfer charge, total electron density, density of states (DOS), energy band structure, frontier molecular orbital, and work function (WF) of each gas has been calculated. Furthermore, the reusability and stability of the Ag-doped MoSe2/ZnO heterojunctions have also been studied. The results showed that Ag-doped MoSe2/ZnO heterojunctions have great potential to be a candidate of highly selective and responsive gas sensors for NO detection with excellent reusability and stability.
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Affiliation(s)
- Tao He
- College of Electrical Engineering, Guizhou University, Guiyang 550025, China; (T.H.); (J.Z.); (Y.Y.); (Y.J.); (Y.Z.); (J.F.)
| | - Hongcheng Liu
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jing Zhang
- College of Electrical Engineering, Guizhou University, Guiyang 550025, China; (T.H.); (J.Z.); (Y.Y.); (Y.J.); (Y.Z.); (J.F.)
| | - Yuepeng Yang
- College of Electrical Engineering, Guizhou University, Guiyang 550025, China; (T.H.); (J.Z.); (Y.Y.); (Y.J.); (Y.Z.); (J.F.)
| | - Yuxiao Jiang
- College of Electrical Engineering, Guizhou University, Guiyang 550025, China; (T.H.); (J.Z.); (Y.Y.); (Y.J.); (Y.Z.); (J.F.)
| | - Ying Zhang
- College of Electrical Engineering, Guizhou University, Guiyang 550025, China; (T.H.); (J.Z.); (Y.Y.); (Y.J.); (Y.Z.); (J.F.)
- Electric Power Research Institute of China Southern Power Grid Guizhou Co., Ltd., Guiyang 550002, China
| | - Jiaqi Feng
- College of Electrical Engineering, Guizhou University, Guiyang 550025, China; (T.H.); (J.Z.); (Y.Y.); (Y.J.); (Y.Z.); (J.F.)
| | - Kelin Hu
- College of Electrical Engineering, Guizhou University, Guiyang 550025, China; (T.H.); (J.Z.); (Y.Y.); (Y.J.); (Y.Z.); (J.F.)
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Hu C, Lin L, Xu Y, Tao H, Zhang Z. Different Doping of VSe 2 Monolayers as Adsorbent and Gas Sensing Material for Scavenging and Detecting SF 6 Decomposed Species. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2618-2630. [PMID: 36775933 DOI: 10.1021/acs.langmuir.2c03018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The application of intrinsic and transition metals (TM)-doped VSe2 monolayers for the detection of faulty gases in SF6 electrical insulated equipment is investigated based on first-principles calculations. The electron density difference, density of state, and adsorption energy are analyzed to further clarify the reaction mechanism. The results show that the intrinsic VSe2 monolayer has weak adsorption performance for SO2 and SOF2 molecules, but the adsorption properties of the system are significantly improved after doping TM atoms. Among them, the TM-doped VSe2 monolayer has better sensing performance for SO2 than for SOF2 molecules. Furthermore, the modulating effect of biaxial strain on the gas-sensitive properties of TM-doped VSe2 system is also analyzed. Finally, the recovery time of the gas molecules on the solid adsorbent is evaluated. The results confirm that the TM-doped VSe2 monolayer can be used as a novel sensing material or scavenger to ensure the normal operation of SF6 electrical insulated equipment. This will provide a prospective insight for experimenters to implement VSe2-based sensing materials or scavengers.
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Affiliation(s)
- Chencheng Hu
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
| | - Long Lin
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
| | - Yonghao Xu
- School of Physics and Electronic Information Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
| | - Hualong Tao
- Liaoning Key Materials Laboratory for Railway, School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China
| | - Zhanying Zhang
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China
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Zhang Y, He S, Yao H, Zuo H, Liu S, Yang C, Feng G. Size Effect of Electrical and Optical Properties in Cr 2+:ZnSe Nanowires. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:369. [PMID: 36678121 PMCID: PMC9863992 DOI: 10.3390/nano13020369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
Previous studies have shown that the nano-crystallization process has an appreciable impact on the luminescence properties of nanocrystals, which determines their defect state composition, size and morphology. This project aims to explore the influence of nanocrystal size on the electrical and optical properties of Cr2+:ZnSe nanowires. A first-principles study of Cr2+:ZnSe nanowires with different sizes was carried out at 0 K in the density functional framework. The Cr2+ ion was found to prefer to reside at the surface of ZnSe nanowires. As the size of the nanocrystals decreased, a considerable short-wave-length shift in the absorption of the vis-near infrared wavelength was observed. A quantum mechanism for the wavelength tunability was discussed.
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Affiliation(s)
- Yuqin Zhang
- College of Mathematics and Physics, Chengdu University of Technology, No.1 East Third Road, Erxianqiao, Chenghua District, Chengdu 610059, China
| | - Shi He
- College of Mathematics and Physics, Chengdu University of Technology, No.1 East Third Road, Erxianqiao, Chenghua District, Chengdu 610059, China
| | - Honghong Yao
- College of Mathematics and Physics, Chengdu University of Technology, No.1 East Third Road, Erxianqiao, Chenghua District, Chengdu 610059, China
| | - Hao Zuo
- College of Mathematics and Physics, Chengdu University of Technology, No.1 East Third Road, Erxianqiao, Chenghua District, Chengdu 610059, China
| | - Shuang Liu
- College of Mathematics and Physics, Chengdu University of Technology, No.1 East Third Road, Erxianqiao, Chenghua District, Chengdu 610059, China
| | - Chao Yang
- Institute of Laser & Micro/Nano Engineering, College of Electronics & Information Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu 610064, China
| | - Guoying Feng
- Institute of Laser & Micro/Nano Engineering, College of Electronics & Information Engineering, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu 610064, China
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Filipovic L, Selberherr S. Application of Two-Dimensional Materials towards CMOS-Integrated Gas Sensors. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12203651. [PMID: 36296844 PMCID: PMC9611560 DOI: 10.3390/nano12203651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/29/2022] [Accepted: 10/07/2022] [Indexed: 06/01/2023]
Abstract
During the last few decades, the microelectronics industry has actively been investigating the potential for the functional integration of semiconductor-based devices beyond digital logic and memory, which includes RF and analog circuits, biochips, and sensors, on the same chip. In the case of gas sensor integration, it is necessary that future devices can be manufactured using a fabrication technology which is also compatible with the processes applied to digital logic transistors. This will likely involve adopting the mature complementary metal oxide semiconductor (CMOS) fabrication technique or a technique which is compatible with CMOS due to the inherent low costs, scalability, and potential for mass production that this technology provides. While chemiresistive semiconductor metal oxide (SMO) gas sensors have been the principal semiconductor-based gas sensor technology investigated in the past, resulting in their eventual commercialization, they need high-temperature operation to provide sufficient energies for the surface chemical reactions essential for the molecular detection of gases in the ambient. Therefore, the integration of a microheater in a MEMS structure is a requirement, which can be quite complex. This is, therefore, undesirable and room temperature, or at least near-room temperature, solutions are readily being investigated and sought after. Room-temperature SMO operation has been achieved using UV illumination, but this further complicates CMOS integration. Recent studies suggest that two-dimensional (2D) materials may offer a solution to this problem since they have a high likelihood for integration with sophisticated CMOS fabrication while also providing a high sensitivity towards a plethora of gases of interest, even at room temperature. This review discusses many types of promising 2D materials which show high potential for integration as channel materials for digital logic field effect transistors (FETs) as well as chemiresistive and FET-based sensing films, due to the presence of a sufficiently wide band gap. This excludes graphene from this review, while recent achievements in gas sensing with graphene oxide, reduced graphene oxide, transition metal dichalcogenides (TMDs), phosphorene, and MXenes are examined.
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Wang J, Zeng W, Zhou Q. Research status of gas sensing performance of MoTe2-based gas sensors: A mini review. Front Chem 2022; 10:950974. [PMID: 35936095 PMCID: PMC9354782 DOI: 10.3389/fchem.2022.950974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/05/2022] [Indexed: 11/13/2022] Open
Abstract
Transition metal dichalcogenides (TMDs) have been widely explored for their excellent gas sensing properties, especially high sensitivity and stability at room temperature. MoTe2 exhibits good sensitivity and selectivity to some nitrogen-containing gases (i.e., NO2, NH3) and has received extensive attention in gas sensing. In addition, increasingly complex production environments place demands on high-quality gas sensors. Therefore, worldwide efforts are devoted to designing and manufacturing MoTe2-based gas sensors with faster response and recovery speed. This paper summarizes the research progress of MoTe2-based gas sensing, focuses on the practical measures to improve the response and recovery speed of MoTe2-based sensors, and discusses the mechanism. This provides guidance for exploring higher performance MoTe2 sensors.
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Affiliation(s)
- Jingyu Wang
- College of Materials Science and Engineering, Chongqing University, Chongqing, China
| | - Wen Zeng
- College of Materials Science and Engineering, Chongqing University, Chongqing, China
- *Correspondence: Wen Zeng, ; Qu Zhou,
| | - Qu Zhou
- College of Engineering and Technology, Southwest University, Chongqing, China
- *Correspondence: Wen Zeng, ; Qu Zhou,
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Shi Z, Xia SY. First-Principle Study of Rh-Doped Nitrogen Vacancy Boron Nitride Monolayer for Scavenging and Detecting SF 6 Decomposition Products. Polymers (Basel) 2021; 13:3507. [PMID: 34685266 PMCID: PMC8541247 DOI: 10.3390/polym13203507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/04/2021] [Accepted: 09/06/2021] [Indexed: 11/16/2022] Open
Abstract
The scavenging and detection of sulfur hexafluoride (SF6) decomposition products (SO2, H2S, SO2F2, SOF2) critically matters to the stable and safe operation of gas-insulated switchgear (GIS) equipment. In this paper, the Rh-doped nitrogen vacancy boron nitride monolayer (Rh-VNBN) is proposed as a gas scavenger and sensor for the above products. The computational processes are applied to investigate the configurations, adsorption and sensing processes, and electronic properties in the gas/Rh-VNBN systems based on the first-principle calculations. The binding energy (Eb) of the Rh-VNBN reaches -8.437 eV, while the adsorption energy (Ead) and band gap (BG) indicate that Rh-VNBN exhibits outstanding adsorption and sensing capabilities. The density of state (DOS) analysis further explains the mechanisms of adsorption and sensing, demonstrating the potential use of Rh-VNBN in sensors and scavengers of SF6 decomposition products. This study is meaningful as it explores new gas scavengers and sensors of SF6 decomposition products to allow the operational status assessment of GIS equipment.
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Affiliation(s)
- Zhen Shi
- School of Electrical Engineering, Guangxi University, Nanning 530004, China
| | - Sheng-Yuan Xia
- State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China;
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Li JY, Wang P, Akram S. Adsorption and sensing for SF 6 decomposed gases by Pt-BN monolayer: a DFT study. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1950856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Jia-Yu Li
- College of Electrical Engineering and Information Technology, Sichuan University, Chengdu, People’s Republic of China
| | - Peng Wang
- College of Electrical Engineering and Information Technology, Sichuan University, Chengdu, People’s Republic of China
| | - Shakeel Akram
- College of Electrical Engineering and Information Technology, Sichuan University, Chengdu, People’s Republic of China
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Yao H, Zhang C, Wang Q, Li J, Yu Y, Xu F, Wang B, Wei Y. Novel Two-Dimensional Layered MoSi 2Z 4 (Z = P, As): New Promising Optoelectronic Materials. NANOMATERIALS 2021; 11:nano11030559. [PMID: 33668165 PMCID: PMC7995989 DOI: 10.3390/nano11030559] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/17/2021] [Accepted: 02/20/2021] [Indexed: 11/16/2022]
Abstract
Very recently, two new two-dimensional (2D) layered semi-conducting materials MoSi2N4 and WSi2N4 were successfully synthesized in experiments, and a large family of these two 2D materials, namely MA2Z4, was also predicted theoretically (Science, 369, 670 (2020)). Motivated by this exciting family, in this work, we systematically investigate the mechanical, electronic and optical properties of monolayer and bilayer MoSi2P4 and MoSi2As4 by using the first-principles calculation method. Numerical results indicate that both monolayer and bilayer MoSi2Z4 (Z = P, As) present good structural stability, isotropic mechanical parameters, moderate bandgap, favorable carrier mobilities, remarkable optical absorption, superior photon responsivity and external quantum efficiency. Especially, due to the wave-functions of band edges dominated by d orbital of the middle-layer Mo atoms are screened effectively, the bandgap and optical absorption hardly depend on the number of layers, providing an added convenience in the experimental fabrication of few-layer MoSi2Z4-based electronic and optoelectronic devices. We also build a monolayer MoSi2Z4-based 2D optoelectronic device, and quantitatively evaluate the photocurrent as a function of energy and polarization angle of the incident light. Our investigation verifies the excellent performance of a few-layer MoSi2Z4 and expands their potential application in nanoscale electronic and optoelectronic devices.
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Affiliation(s)
- Hui Yao
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.Y.); (Q.W.); (J.L.); (F.X.); (Y.W.)
- Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Chao Zhang
- Beijing Computational Science Research Center, Beijing 100193, China;
| | - Qiang Wang
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.Y.); (Q.W.); (J.L.); (F.X.); (Y.W.)
| | - Jianwei Li
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.Y.); (Q.W.); (J.L.); (F.X.); (Y.W.)
| | - Yunjin Yu
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.Y.); (Q.W.); (J.L.); (F.X.); (Y.W.)
- Correspondence: (Y.Y.); (B.W.)
| | - Fuming Xu
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.Y.); (Q.W.); (J.L.); (F.X.); (Y.W.)
| | - Bin Wang
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.Y.); (Q.W.); (J.L.); (F.X.); (Y.W.)
- Correspondence: (Y.Y.); (B.W.)
| | - Yadong Wei
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (H.Y.); (Q.W.); (J.L.); (F.X.); (Y.W.)
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