摘要
The temperature-dependent ammonia gas sensing performance of an interesting indium tin oxide (ITO) based device with an underlying Au-nanodot layer (ITO-Au) is studied and demonstrated. The studied ITO-Au device exhibits good ammonia gas sensing performance and widespread ammonia gas concentration regime. The optimal operation temperature of the studied ITO-Au device is 150?C. The studied ITO-Au device exhibits the benefit of improved sensing performance and extremely low ammonia gas concentration detecting ability. For example, under introduced 1000 ppm and 175 ppb NH3/air gases, the studied ITO-Au device demonstrates remarkable sensitivity ratios of 1786% and 98%, respectively, at 150?C. The related transient responses are also studied. The enhanced sensing performance of the studied ITO-Au device is primarily caused by the presented rougher surface which gives to the increased effective adsorption area. Experimentally, the studied ITO-Au device reveals advantages of simple structure, ease of fabrication, high sensing response, extremely low ammonia gas detecting limit, and low temperature operation capability.
原文 | English |
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頁(從 - 到) | B17-B22 |
期刊 | Journal of the Electrochemical Society |
卷 | 160 |
發行號 | 2 |
DOIs | |
出版狀態 | Published - 2013 4月 2 |
All Science Journal Classification (ASJC) codes
- 電子、光磁材料
- 可再生能源、永續發展與環境
- 表面、塗料和薄膜
- 電化學
- 材料化學