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Multi-strategy coordination enables WSe2 to achieve high-performance real-world detection of NO2
Duan, Yu1,2,3; Sun, Deen1; Zhang, Sam4,5; Wang, Shengyi1; Qiu, Jiajia3; Feng, Shuanglong2
2024-03-15
摘要In recent years, WSe2 has become an ideal material for room-temperature NO2 gas sensing, but its low response and long response time limit its application. In this study, we combined multiple strategies of constructing a three-dimensional structure, introducing Se vacancies, Au nanoparticle sensitization, and 1 T/2 H-phase modulation. The synergistic effect was utilized to effectively enhance the gas adsorption, charge transfer degree, and carrier transport capacity of WSe2 and achieve high-performance NO2 detection. The prepared V-WAAP achieved high response (78.32%) with a short response time (33 s), and outstanding stability and selectivity for low concentration (1 ppm) NO2. The intrinsic factors of sensing performance improvement were comprehensively analyzed by combining the results of compositional and structural characterization. In addition, we verified its potential for practical applications by assembling a V-WAAP-based NO2 gas sensing equipment.
关键词WSe2 gas sensors Vertical structure Au sensitization Phase modulation Se vacancies
DOI10.1016/j.snb.2023.135183
发表期刊SENSORS AND ACTUATORS B-CHEMICAL
卷号403页码:10
通讯作者Sun, Deen(sundeen0909@swu.edu.cn) ; Zhang, Sam(samzhang@hit.edu.cn) ; Feng, Shuanglong(fengshuanglong@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:001146520600001
语种英语