Low-frequency noise characteristics of epitaxial ZnO photoconductive sensors

S. P. Chang, Shoou-Jinn Chang, Y. Z. Chiou, C. Y. Lu, T. K. Lin, Yu-Cheng Lin, C. F. Kuo, H. M. Chang

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We report the fabrication of epitaxial ZnO photoconductive sensors on sapphire substrates. With an incident light wavelength of 370 nm and a 5 V applied bias, we achieved a sensor responsivity of 20.5 mAW. It was also found that low-frequency and high-frequency noises in the fabricated sensors were dominated by 1/f type and shot noises, respectively. With a 5 V applied bias, it was found that noise equivalent power and normalized detectivity of the fabricated sensors were 1.83× 10-6 W and 6.91× 105 cm Hz0.5 W-1, respectively.

Original languageEnglish
Pages (from-to)J209-J211
JournalJournal of the Electrochemical Society
Volume154
Issue number7
DOIs
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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