ZnO nanorods based ammonia gas sensors with interdigitized electrodes

Tai You Chen, Jian Sheng Wu, Chi Shiang Hsu, Po Cheng Chou, Huey Ing Chen, Kun Wei Lin, Wen Chau Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The ZnO nanorods-based ammonia (NH3) gas sensors with different electrode spacing are fabricated and studied. Experimentally, the hexagonal ZnO nanorods were prepared by a hydrothermal method. The diameter and length of ZnO nanorods were about 179±2, 1806±5 nm, respectively. By shrinking the electrode spacing, the sensor response of studied device is improved and the sensor response is enhanced more than ten times in magnitude. The improved NH3 sensing ability caused by shrink electrode spacing is attributed to the presence of more grain boundaries and depletion layers. Therefore, the studied device with the shrink of electrode spacing provides a promise for high-performance ammonia sensing applications.

Original languageEnglish
Title of host publicationFrontier of Nanoscience and Technology
PublisherTrans Tech Publications Ltd
Number of pages5
ISBN (Print)9783037852101
Publication statusPublished - 2011

Publication series

NameMaterials Science Forum
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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