无铅铜基钙钛矿Cs_(2)CuBr_(4)的湿度传感性能  

Humidity sensitive properties of lead-free copper-based perovskite Cs_(2)CuBr_(4)

作　　者：陈博 洪祺祺 唐丽荣[1,2] 张伟川 陈伟香 李星 吕日新[4] 黄彪[1] CHEN Bo;HONG Qiqi;TANG Lirong;ZHANG Weichuan;CHEN Weixiang;LI Xing;LYU Rixin;HUANG Biao(College of Material Engineering,Fujian Agriculture and Forestry University,Fuzhou 350000,Fujian,China;Jinshan College,Fujian Agriculture and Forestry University,Fuzhou 350000,Fujian,China;National Nanoscience Center,Chinese Academy of Sciences,Beijing 100190,China;College of Life Sciences,Fujian Agriculture and Forestry University,Fuzhou 350000,Fujian,China)

机构地区：[1]福建农林大学材料工程学院,福建福州350000 [2]福建农林大学金山学院,福建福州350000 [3]中国科学院国家纳米中心,北京100190 [4]福建农林大学生命科学学院,福建福州350000

出　　处：《化工进展》2022年第6期3162-3169,共8页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(32001267,31770611);福建省高等学校“竹资源创新利用”科技创新团队项目(KJG200031A);福建农林大学国际科技合作与交流项目(KXGH17008)。

摘　　要：铅卤钙钛矿因其优异的光电性能引起了人们的极大关注,但由于其内在的不稳定性以及铅的毒性问题,限制了其实际应用。本文制得一种性能较稳定的无铅铜基钙钛矿Cs_(2)CuBr_(4),利用其对湿度较为敏感的特性,创制了基于Cs_(2)CuBr_(4)敏感膜的石英晶体微天平(quartz crystal microbalance, QCM)湿度传感器。结果表明,当钙钛矿溶液的浓度小于0.4μg/μL时,敏感膜在11%~84%相对湿度下具有良好的湿度传感性能。其中最优浓度为0.3μg/μL(QCM-3)、薄膜质量398.95ng时,传感器具有高灵敏度(37.65Hz/%RH),优异的对数线性关系(R^(2)=0.9948)和快速的响应/恢复时间(5s/1s)。由此可见,无铅铜基钙钛矿Cs_(2)CuBr_(4)在湿度传感领域具有良好的应用前景。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 Cs_(2)CuBr_(4)with relatively stable performance and used its humidity-sensitive characteristics to fabricate a quartz crystal microbalance(QCM) humidity sensor based on the Cs_(2)CuBr_(4)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(R^(2)=0.9948) and fast response/recovery time(5s/1s). Therefore, lead-free copper-perovskite Cs_(2)CuBr_(4)had a good application prospect in humidity sensing field.

关 键 词：石英晶体微天平 无铅 铜基钙钛矿 湿度传感器 

分 类 号：TQ174[化学工程—陶瓷工业]