標題: A 0.05 V driven ammonia gas sensor based on an organic diode with a top porous layered electrode and an air-stable sensing film
作者: Madhaiyan, Govindasamy
Chen, Chao-Hsuan
Wu, Yi-Chu
Horng, Sheng-Fu
Zan, Hsiao-Wen
Meng, Hsin-Fei
Lin, Hong-Cheu
交大名義發表
材料科學與工程學系
物理研究所
National Chiao Tung University
Department of Materials Science and Engineering
Institute of Physics
公開日期: 7-Jun-2019
摘要: In this work, we successfully demonstrated an extremely-low-voltage (0.05 V) gas sensor based on a vertical organic diode with work-function-matched electrodes. With the designed electrodes (MoO3/Al vs. Al), the built-in field in the vertical diode is greatly reduced and hence the diode can be turned on at a very low voltage. By producing nanometer pores in the top electrode, the diode becomes a very sensitive gas sensor to detect ammonia in parts-per-billion (ppb) concentrations. Upon reducing the voltage from 5 V to 0.05 V, this sensor device shows an over 5-times enhancement in the sensitivity. The air-stable sensing film also exhibits a lifetime of 30 days in air. Finally, by connecting with an organic photovoltaic (OPV) device, the gas sensor can be directly powered and switched on by irradiating light on the OPV.
URI: http://dx.doi.org/10.1039/c8tc06364h
http://hdl.handle.net/11536/152280
ISSN: 2050-7526
DOI: 10.1039/c8tc06364h
期刊: JOURNAL OF MATERIALS CHEMISTRY C
Volume: 7
Issue: 21
起始頁: 6440
結束頁: 6447
Appears in Collections:Articles