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A Photovoltaic Self-Powered Gas Sensor Based on All-Dry Transferred MoS2/GaSe Heterojunction for ppb-Level NO2 Sensing at Room Temperature
Advanced Science ( IF 14.3 ) Pub Date : 2021-05-24 , DOI: 10.1002/advs.202100472 Yue Niu 1, 2 , Junwei Zeng 1, 2 , Xiangcheng Liu 1, 2 , Jialong Li 1, 2 , Quan Wang 1, 2 , Hao Li 1, 2 , Nicolaas Frans de Rooij 1, 2 , Yao Wang 1, 2 , Guofu Zhou 1, 2
Advanced Science ( IF 14.3 ) Pub Date : 2021-05-24 , DOI: 10.1002/advs.202100472 Yue Niu 1, 2 , Junwei Zeng 1, 2 , Xiangcheng Liu 1, 2 , Jialong Li 1, 2 , Quan Wang 1, 2 , Hao Li 1, 2 , Nicolaas Frans de Rooij 1, 2 , Yao Wang 1, 2 , Guofu Zhou 1, 2
Affiliation
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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 NO2 gas. In this work, a photovoltaic self-powered NO2 gas sensor based on n-MoS2/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 NO2 with short response and recovery time and high selectivity at room temperature (25 °C). It is worth mentioning that the LOD toward NO2 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.
中文翻译：
基于全干转移 MoS2/GaSe 异质结的光伏自供电气体传感器，用于室温下 ppb 级 NO2 传感
传统气体传感器未来在智能手机和无线传感器平台中的应用面临着低功耗的挑战。为了解决这个问题，自供电气体传感器近年来得到迅速发展。然而，所有报道的自供电气体传感器都面临着 NO 2气体检测限 (LOD) 高的问题。本工作采用机械剥离和全干转移法成功制备了基于n-MoS 2 /p-GaSe异质结的光伏自供电NO 2气体传感器。在405 nm可见光照射下，所制造的光伏自供电气体传感器对ppb级NO 2表现出显着的响应，响应和恢复时间短，在室温（25 °C）下具有高选择性。值得一提的是，该装置对NO 2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。所讨论的设备可以用作构建块来制造更多功能的物联网设备。
更新日期：2021-07-21
中文翻译：
基于全干转移 MoS2/GaSe 异质结的光伏自供电气体传感器，用于室温下 ppb 级 NO2 传感
传统气体传感器未来在智能手机和无线传感器平台中的应用面临着低功耗的挑战。为了解决这个问题，自供电气体传感器近年来得到迅速发展。然而，所有报道的自供电气体传感器都面临着 NO 2气体检测限 (LOD) 高的问题。本工作采用机械剥离和全干转移法成功制备了基于n-MoS 2 /p-GaSe异质结的光伏自供电NO 2气体传感器。在405 nm可见光照射下，所制造的光伏自供电气体传感器对ppb级NO 2表现出显着的响应，响应和恢复时间短，在室温（25 °C）下具有高选择性。值得一提的是，该装置对NO 2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。所讨论的设备可以用作构建块来制造更多功能的物联网设备。
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