材料科学
钙钛矿(结构)
薄膜
氨
纳米技术
分析化学(期刊)
化学工程
工程物理
环境化学
有机化学
物理
工程类
化学
作者
Mrunal Bhosale,A I Kazi,Krishna K. Pawar,R S Shingate,A D Kadam,N J Patil,Arif D. Sheikh
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2022-11-08
卷期号:34 (6): 065501-065501
被引量:4
标识
DOI:10.1088/1361-6528/aca0f7
摘要
Organic-inorganic perovskite halides (OIPH) have emerged as a wonder material with growing interest in sensors detecting various toxic gases. However, lead toxicity represents a potential obstacle, and therefore finding lead-free cost-effective compatible materials for gas sensing applications is essential. In this work, methylammonium bismuth iodide i.e. (CH3NH3)3Bi2I9(MABI) perovskite thin films-based ammonia (NH3) sensor was synthesized using an antisolvent-assisted one-step spin coating method. The MABI sensor shows a linear relationship between the responsivity and concentration of NH3with excellent reversibility, high gas responsivity, and humidity stability. The MABI thin-film sensor exhibits a maximum gas response of 24%, a short response/recovery time i.e. 0.14 s /8.15 s and good reversibility at 6 ppm of NH3. It was observed that MABI thin films based sensors have excellent ambient stability over a couple of months. This work reveals that it is feasible to design high-performance gas sensors based on environmentally-friendly Bi-based OIPH materials.
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