Ammonia sensing characteristic of a Pt nanoparticle/aluminum-doped zinc oxide sensor

Huey Ing Chen, Cheng Yu Chi, Wei Cheng Chen, I. Ping Liu, Ching Hong Chang, Tzu Chieh Chou, Wen Chau Liu

研究成果: Article同行評審

26 引文 斯高帕斯(Scopus)


Pt nanoparticles (NPs) are deposited on a sputtered aluminum-doped zinc oxide (AZO) layer to form a new Pt NP/AZO ammonia sensor. As compared to the pristine sputtered AZO layer, the studied Pt NP/AZO device shows significant improvements in the ammonia sensing response and sensing speed due to the effectively catalytic activity of the Pt metal. Experimentally, under 1000 ppm NH3/air gas at 300 °C, a sensing response of 2183 is obtained for the studied Pt NP/AZO device, which is higher than that (24) of the pristine AZO one. The response and recovery time constants at 300 °C (350 °C) of 133 (24) s and 14 (4) s are acquired, respectively, for the studied Pt NP/AZO sensor under 1000 ppm NH3/air gas. Therefore, based on the advantages mentioned above and the benefits of low cost, simple structure, and easy fabrication, the studied Pt NP/AZO structure is suitable to produce high-performance metal-oxide-based ammonia sensors.

頁(從 - 到)145-154
期刊Sensors and Actuators, B: Chemical
出版狀態Published - 2018 8月 15

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 儀器
  • 凝聚態物理學
  • 表面、塗料和薄膜
  • 金屬和合金
  • 電氣與電子工程
  • 材料化學


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