Zheng Z Q, Yao J D, Wang B, Yang G W
State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics &Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong, P. R. China.
Shenzhen Key Lab of Micro-nano Photonic Information Technology, Shenzhen Key Laboratory of Sensor Technology, College of Electronic Science and Technology, Shenzhen University, Shenzhen 518060, Guangdong, P. R. China.
Sci Rep. 2015 Jun 16;5:11070. doi: 10.1038/srep11070.
In recent years, owing to the significant applications of health monitoring, wearable electronic devices such as smart watches, smart glass and wearable cameras have been growing rapidly. Gas sensor is an important part of wearable electronic devices for detecting pollutant, toxic, and combustible gases. However, in order to apply to wearable electronic devices, the gas sensor needs flexible, transparent, and working at room temperature, which are not available for traditional gas sensors. Here, we for the first time fabricate a light-controlling, flexible, transparent, and working at room-temperature ethanol gas sensor by using commercial ZnO nanoparticles. The fabricated sensor not only exhibits fast and excellent photoresponse, but also shows high sensing response to ethanol under UV irradiation. Meanwhile, its transmittance exceeds 62% in the visible spectral range, and the sensing performance keeps the same even bent it at a curvature angle of 90(o). Additionally, using commercial ZnO nanoparticles provides a facile and low-cost route to fabricate wearable electronic devices.
近年来，由于健康监测的重要应用，智能手表、智能眼镜和可穿戴相机等可穿戴电子设备发展迅速。气体传感器是可穿戴电子设备中用于检测污染物、有毒气体和可燃气体的重要组成部分。然而，为了应用于可穿戴电子设备，气体传感器需要具备柔性、透明且能在室温下工作的特性，而传统气体传感器并不具备这些特性。在此，我们首次使用商用ZnO纳米颗粒制造出一种光控、柔性、透明且能在室温下工作的乙醇气体传感器。所制备的传感器不仅表现出快速且优异的光响应，还在紫外光照射下对乙醇显示出高传感响应。同时，其在可见光谱范围内的透过率超过62%，即使在曲率角为90°弯曲时传感性能仍保持不变。此外，使用商用ZnO纳米颗粒为制造可穿戴电子设备提供了一种简便且低成本的途径。
