Transition Metal (Rh, Pd, and Pt) Doped SnS₂ Monolayer as Promising Work Function Gas Sensors for H₂Se Detection: A DFT Study

IF 4.3 2区 综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Dachang Chen;Qing Miao;Honghua Liao;Song Xiao;Beibei Xiao;Xiaoxing Zhang
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引用次数: 0

Abstract

The exploration of hydrogen selenide (H2Se) gas sensor is crucial for human and environmental safety in semiconductor manufacturing and coal gasification processes. In this study, density functional theory (DFT) was employed to investigate the adsorption and sensing properties of pristine and transition metal (TM) (Rh, Pd, and Pt) doped SnS2 (TM-SnS2) monolayer toward H2 Se. The physical stability of TM-SnS2, adsorption energies, electron transfer and distribution, chemical interactions, and overall sensing performance were examined. The results indicate that all three TM-SnS2 structures exhibit physical stability, as evidenced by their larger binding energies compared to their bulk phases. The introduction of TM atoms significantly enhances both adsorption energy and electron transfer. Moreover, all three TM atoms display strong chemical interactions with the Se atom, with adsorption on Rh and Pt sites showing a high potential for new bond formation. As work function-based gas sensor, all three TM-SnS2 exhibit a clear response to H2Se. When considering the operating environment under air condition, only Rh-SnS2 and Pt-SnS2 can detect 50 ppb of H2Se. Overall, Rh-SnS2 and Pt-SnS2 are proposed as promising candidates for H2Se sensing applications in industrial and environmental monitoring.
过渡金属(Rh, Pd和Pt)掺杂SnS 2单层作为有前途的功函数气体传感器用于h2 Se检测:DFT研究
探索硒化氢(H2Se)气体传感器对于半导体制造和煤气化过程中的人类和环境安全至关重要。本研究采用密度泛函理论(DFT)研究了原始和过渡金属(TM) (Rh, Pd, Pt)掺杂SnS2 (TM-SnS2)单层对H2 Se的吸附和传感性能。考察了TM-SnS2的物理稳定性、吸附能、电子转移和分布、化学相互作用以及整体传感性能。结果表明,三种TM-SnS2结构均表现出物理稳定性,其结合能均大于体相。TM原子的引入显著提高了吸附能和电子转移。此外,这三个TM原子都与Se原子表现出强烈的化学相互作用,在Rh和Pt位点上的吸附显示出形成新键的高潜力。作为基于功函数的气体传感器,这三种TM-SnS2都对H2Se有明显的响应。考虑空调器下的工作环境,只有Rh-SnS2和Pt-SnS2能检测到50 ppb的H2Se。总的来说,Rh-SnS2和Pt-SnS2被认为是工业和环境监测中H2Se传感应用的有希望的候选者。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
IEEE Sensors Journal
IEEE Sensors Journal 工程技术-工程:电子与电气
CiteScore
7.70
自引率
14.00%
发文量
2058
审稿时长
5.2 months
期刊介绍: The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice
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