Wang Zhenyu, Xiao Yan, Cui Xiaobiao, Cheng Pengfei, Wang Biao, Gao Yuan, Li Xiaowei, Yang Tianlin, Zhang Tong, Lu Geyu
State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China.
ACS Appl Mater Interfaces. 2014 Mar 26;6(6):3888-95. doi: 10.1021/am404858z. Epub 2014 Mar 4.
Urchinlike CuO modified by reduced graphene oxide (rGO) was synthesized by a one-pot microwave-assisted hydrothermal method. The as-prepared composites were characterized using various characterization methods. A humidity sensor based on the CuO/rGO composites was fabricated and tested. The results revealed that the sensor based on the composites showed much higher impedance than pure CuO. Compared with the sensors based on pristine rGO and CuO, the sensor fabricated with the composites exhibited relatively good humidity-sensing performance in terms of response time and response value. The humidity-sensing mechanism was also briefly introduced. The enlargement of the impedance and improvement of the humidity-sensing properties are briefly explained by the Schottky junction theory.
通过一锅法微波辅助水热法合成了还原氧化石墨烯（rGO）修饰的海胆状CuO。采用多种表征方法对所制备的复合材料进行了表征。制备并测试了基于CuO/rGO复合材料的湿度传感器。结果表明，基于该复合材料的传感器的阻抗比纯CuO高得多。与基于原始rGO和CuO的传感器相比，用该复合材料制备的传感器在响应时间和响应值方面表现出相对良好的湿度传感性能。还简要介绍了湿度传感机制。通过肖特基结理论简要解释了阻抗的增大和湿度传感性能的改善。
