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

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)145-154
Number of pages10
JournalSensors and Actuators, B: Chemical
Volume267
DOIs
Publication statusPublished - 2018 Aug 15

Fingerprint

Zinc Oxide
Zinc oxide
Aluminum
Ammonia
zinc oxides
ammonia
Nanoparticles
aluminum
nanoparticles
sensors
Sensors
Gases
Metals
air
Air
gases
Oxides
time constant
metal oxides
catalytic activity

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Chen, Huey Ing ; Chi, Cheng Yu ; Chen, Wei Cheng ; Liu, I. Ping ; Chang, Ching Hong ; Chou, Tzu Chieh ; Liu, Wen Chau. / Ammonia sensing characteristic of a Pt nanoparticle/aluminum-doped zinc oxide sensor. In: Sensors and Actuators, B: Chemical. 2018 ; Vol. 267. pp. 145-154.
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Ammonia sensing characteristic of a Pt nanoparticle/aluminum-doped zinc oxide sensor. / Chen, Huey Ing; Chi, Cheng Yu; Chen, Wei Cheng; Liu, I. Ping; Chang, Ching Hong; Chou, Tzu Chieh; Liu, Wen Chau.

In: Sensors and Actuators, B: Chemical, Vol. 267, 15.08.2018, p. 145-154.

Research output: Contribution to journalArticle

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AU - Chen, Huey Ing

AU - Chi, Cheng Yu

AU - Chen, Wei Cheng

AU - Liu, I. Ping

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AU - Chou, Tzu Chieh

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