一种基于全干法转移的MoS /GaSe异质结的光伏自供电气体传感器，用于室温下ppb级NO传感。
A Photovoltaic Self-Powered Gas Sensor Based on All-Dry Transferred MoS /GaSe Heterojunction for ppb-Level NO Sensing at Room Temperature.
作者信息
Niu Yue, Zeng Junwei, Liu Xiangcheng, Li Jialong, Wang Quan, Li Hao, Rooij Nicolaas Frans de, Wang Yao, Zhou Guofu
机构信息
Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China.
National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China.
出版信息
Adv Sci (Weinh). 2021 Jul;8(14):e2100472. doi: 10.1002/advs.202100472. Epub 2021 May 24.
Traditional gas sensors are facing the challenge of low power consumption for future application in smart phones and wireless sensor platforms. To solve this problem, self-powered gas sensors are rapidly developed in recent years. However, all reported self-powered gas sensors are suffering from high limit of detection (LOD) toward NO gas. In this work, a photovoltaic self-powered NO gas sensor based on n-MoS /p-GaSe heterojunction is successfully prepared by mechanical exfoliation and all-dry transfer method. Under 405 nm visible light illumination, the fabricated photovoltaic self-powered gas sensors show a significant response toward ppb-level NO with short response and recovery time and high selectivity at room temperature (25 °C). It is worth mentioning that the LOD toward NO of this device is 20 ppb, which is the lowest of the reported self-powered room-temperature gas sensors so far. The discussed devices can be used as building blocks to fabricate more functional Internet of things devices.
传统气体传感器在未来应用于智能手机和无线传感器平台时面临着低功耗的挑战。为了解决这个问题，近年来自供电气体传感器得到了迅速发展。然而，所有报道的自供电气体传感器对NO气体的检测限（LOD）都很高。在这项工作中，通过机械剥离和全干法转移方法成功制备了一种基于n-MoS /p-GaSe异质结的光伏自供电NO气体传感器。在405 nm可见光照射下，所制备的光伏自供电气体传感器在室温（25°C）下对ppb级NO表现出显著的响应，响应和恢复时间短，选择性高。值得一提的是，该器件对NO的LOD为20 ppb，是迄今为止报道的自供电室温气体传感器中最低的。所讨论的器件可以用作构建模块来制造更多功能的物联网设备。
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