Ordered porous RGO/SnO 2 thin films for ultrasensitive humidity detection
Ordered porous RGO/SnO 2 thin films for ultrasensitive humidity detection
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用于超灵敏湿度检测的有序多孔 RGO/SnO 2 薄膜
DOI：
10.1039/d3tc00983a
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发表时间：
2023
影响因子：
6.4
通讯作者：
Carraro, Carlo
中科院分区：
文献类型：
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作者：
Li, Zhou;Gardner, David W.;Xia, Yong;Zhao, Sikai;Pan, Aifei;Goel, Nishit;Bart, Stephen;Liu, Chen;Yi, Jianxin;Carraro, Carlo
采用聚苯乙烯球单层胶体晶体模板法制备了还原氧化石墨烯/氧化锡（rGO/SnO 2）有序多孔薄膜，并对其气敏性能进行了系统研究。使用几种互补的材料表征技术分析所形成的无定形SnO 2和部分还原的氧化石墨烯。结果表明，rGO的掺入显着提高了相对于原始的SnO 2薄膜的传感器的湿度灵敏度和电导率。rGO/SnO 2复合膜具有快速响应时间和优异的湿度选择性。rGO/SnO 2传感器的长期稳定性通过将其性能与商业湿度传感器进行比较来证实。增强的传感器性能归因于rGO的掺入和复合膜的有序多孔结构的协同效应。
In this work, ordered porous thin films of reduced graphene oxide and tin oxide (rGO/SnO2) were synthesized by a polystyrene sphere monolayer colloidal crystal template method, and their gas-sensing properties were systematically studied. The formed amorphous SnO2 and partially reduced graphene oxide were analyzed using several complementary material characterization techniques. The results show that the incorporation of rGO significantly improved the humidity sensitivity and the electrical conductivity of the sensor relative to the pristine SnO2 thin film. Fast response time and excellent selectivity towards humidity were also achieved for the rGO/SnO2 composite film. The long-term stability of the rGO/SnO2 sensor was confirmed by comparing its performance to a commercial humidity sensor. The enhanced sensor performance is attributed to the synergistic effects of the incorporation of rGO and the ordered porous structure of the composite film.