Humidity sensitive properties of lead-free copper-based perovskite Cs2CuBr4

被引：0
|
作者：
Chen B. [1 ]
Hong Q. [1 ]
Tang L. [1 ,2 ]
Zhang W. [3 ]
Chen W. [1 ]
Li X. [2 ]
Lyu R. [4 ]
Huang B. [1 ]
机构：
[1] College of Material Engineering, Fujian Agriculture and Forestry University, Fujian, Fuzhou
[2] Jinshan College, Fujian Agriculture and Forestry University, Fujian, Fuzhou
[3] National Nanoscience Center, Chinese Academy of Sciences, Beijing
[4] College of Life Sciences, Fujian Agriculture and Forestry University, Fujian, Fuzhou
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 06期
关键词：
copper-based perovskite; humidity sensor; lead-free; quartz crystal microbalance (QCM);
D O I：
10.16085/j.issn.1000-6613.2021-1526
中图分类号：
学科分类号：
摘要：
Lead halide perovskite has attracted enormous attention with its excellent photoelectric properties, while the practical applications are limited by the inherent instability and toxicity of the lead halide perovskites. Therefore, this paper proposed a lead-free copper-based perovskite Cs2CuBr4 with relatively stable performance and used its humidity-sensitive characteristics to fabricate a quartz crystal microbalance (QCM) humidity sensor based on the Cs2CuBr4 sensitive film. The results showed that when the concentration of perovskite solution was less than 0.4μg/μL, the sensitive film sensitive film had good humidity sensing performance at 11%—84% RH. Among them, the optimal concentration was 0.3μg/μL (QCM-3). When the film mass was 398.95ng, the sensor had high sensitivity (37.65Hz/% RH), excellent logarithmic linear relationship (R2=0.9948) and fast response/recovery time (5s/1s). Therefore, lead-free copper-perovskite Cs2CuBr4 had a good application prospect in humidity sensing field. © 2022, Chemical Industry Press Co., Ltd.. All rights reserved.
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页码：3162 / 3169
页数：7
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