Noise characteristics of ZnO-nanowire photodetectors prepared on ZnO:Ga/Glass templates

Chien Yuan Lu, Sheng Po Chang, Shoou Jinn Chang, Che Fu Kuo, Hong Ming Chang

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

In this paper, we report the fabrication of vertically well-aligned ZnO nanowire ultraviolet (UV) photodetectors on ZnO:Ga/glass templates. With 1 V applied bias, it was found that dark current density of the device was only 1.37 x 10–7 A/cm2. It was also found that UV-to-visible rejection ratio of the fabricated photodetector was around 1000 with a maximum quantum efficiency of 12.6%. It was also found that noise equivalent power and normalized detectivity of the ZnO nanowire photodetector were 5.73 x 10–11 W and 6.17 x 109 cmHz0.5 W-1, respectively.

Original languageEnglish
Pages (from-to)1020-1024
Number of pages5
JournalIEEE Sensors Journal
Volume7
Issue number7
DOIs
Publication statusPublished - 2007 Jul 7

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

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