无铅铜基钙钛矿Cs2CuBr4的湿度传感性能

doi:10.16085/j.issn.1000-6613.2021-1526

化工进展 ›› 2022, Vol. 41 ›› Issue (6): 3162-3169.DOI: 10.16085/j.issn.1000-6613.2021-1526

无铅铜基钙钛矿Cs₂CuBr₄的湿度传感性能

陈博¹(), 洪祺祺¹, 唐丽荣¹^,²(), 张伟川³, 陈伟香¹, 李星², 吕日新⁴, 黄彪¹

^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

收稿日期:2021-07-19 修回日期:2021-09-16 出版日期:2022-06-10 发布日期:2022-06-21
通讯作者: 唐丽荣
作者简介:陈博（1997—），男，硕士研究生，研究方向为生物质化学与材料工程。E-mail：1357307704@qq.com。
基金资助:
国家自然科学基金(32001267);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)

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

CHEN Bo¹(), HONG Qiqi¹, TANG Lirong¹^,²(), ZHANG Weichuan³, CHEN Weixiang¹, LI Xing², LYU Rixin⁴, HUANG Biao¹

^1.College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350000, Fujian, China
^2.Jinshan College, Fujian Agriculture and Forestry University, Fuzhou 350000, Fujian, China
^3.National Nanoscience Center, Chinese Academy of Sciences, Beijing 100190, China
^4.College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350000, Fujian, China

Received:2021-07-19 Revised:2021-09-16 Online:2022-06-10 Published:2022-06-21
Contact: TANG Lirong

摘要/Abstract

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Cs₂CuBr₄，利用其对湿度较为敏感的特性，创制了基于Cs₂CuBr₄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（R²=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Cs₂CuBr₄在湿度传感领域具有良好的应用前景。

关键词: 石英晶体微天平, 无铅, 铜基钙钛矿, 湿度传感器

Abstract:

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 Cs₂CuBr₄sensitive 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.

Key words: quartz crystal microbalance (QCM), lead-free, copper-based perovskite, humidity sensor

中图分类号:

TQ174

陈博, 洪祺祺, 唐丽荣, 张伟川, 陈伟香, 李星, 吕日新, 黄彪. 无铅铜基钙钛矿Cs₂CuBr₄的湿度传感性能[J]. 化工进展, 2022, 41(6): 3162-3169.

CHEN Bo, HONG Qiqi, TANG Lirong, ZHANG Weichuan, CHEN Weixiang, LI Xing, LYU Rixin, HUANG Biao. Humidity sensitive properties of lead-free copper-based perovskite Cs₂CuBr₄[J]. Chemical Industry and Engineering Progress, 2022, 41(6): 3162-3169.

图/表 10

参考文献 21

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编号	湿度范围/%	涂膜前频率/Hz	涂膜后频率/Hz	频率变化值/Hz	薄膜质量/ng	灵敏度/Hz·%^-1
QCM-1	11~84	20003857	20001454	-1307	181.68	15.83
QCM-2	11~84	20004425	19999675	-1413	196.42	18.00
QCM-3	11~84	20004403	19998010	-2870	398.95	37.65
QCM-4	11~84	20004449	19996801	-4875	677.67	68.22
QCM-5	11~75	20003985	19997882	-2256	—	—

编号	湿度范围/%	涂膜前频率/Hz	涂膜后频率/Hz	频率变化值/Hz	薄膜质量/ng	灵敏度/Hz·%^-1
QCM-1	11~84	20003857	20001454	-1307	181.68	15.83
QCM-2	11~84	20004425	19999675	-1413	196.42	18.00
QCM-3	11~84	20004403	19998010	-2870	398.95	37.65
QCM-4	11~84	20004449	19996801	-4875	677.67	68.22
QCM-5	11~75	20003985	19997882	-2256	—	—

材料	湿度范围/%	输出信号	（响应/恢复时间)/(s/s）	灵敏度	参考文献
Cs₃Cu₂Br₅	33~95	电阻	22/10（95% RH）	—	［21］
Cs₂BiAgBr₆	5~75	电流	1.78/0.45（75% RH）	1162（归-化）	［25］
ZnSnO₃	11~97	电阻	7/16（97% RH）	—	［26］
NaNbO₃	20~80	电阻	3/23（80% RH）	10⁵（R_H/R_L）	［27］
Cs₂PdBr₆	11~95	电阻	0.4/6（95% RH）	—	［30］
CdTiO₃	40~90	电阻	4/6（90% RH）	10.01MΩ·%^-1	［31］
Cs₂CuBr₄	11~84	频率	5/1（84% RH）	68.22Hz·%^-1	本文

材料	湿度范围/%	输出信号	（响应/恢复时间)/(s/s）	灵敏度	参考文献
Cs₃Cu₂Br₅	33~95	电阻	22/10（95% RH）	—	［21］
Cs₂BiAgBr₆	5~75	电流	1.78/0.45（75% RH）	1162（归-化）	［25］
ZnSnO₃	11~97	电阻	7/16（97% RH）	—	［26］
NaNbO₃	20~80	电阻	3/23（80% RH）	10⁵（R_H/R_L）	［27］
Cs₂PdBr₆	11~95	电阻	0.4/6（95% RH）	—	［30］
CdTiO₃	40~90	电阻	4/6（90% RH）	10.01MΩ·%^-1	［31］
Cs₂CuBr₄	11~84	频率	5/1（84% RH）	68.22Hz·%^-1	本文

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无铅铜基钙钛矿Cs₂CuBr₄的湿度传感性能

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

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