A visible-blind TiO 2 nanowire photodetector

Tsung Ying Tsai, Shoou Jinn Chang, Wen Ying Weng, Cheng Liang Hsu, Sin Hui Wang, Chiu Jung Chiu, Ting Jen Hsueh, Sheng Po Chang

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

The authors report the growth of TiO 2 nanowires by heating the Ti/glass template and the fabrication of a TiO 2 nanowire photodetector (PD) by depositing interdigitated contact electrodes. It was also found that the fabricated TiO 2 nanowire PD was visible-blind with a cutoff wavelength around 390 nm. Compared with conventional film-type TiO 2 PDs, it was found that we could achieve a 10 times larger photocurrent from the TiO 2 nanowire PD. It was also found that dynamic response of the TiO 2 nanowire PD was stable and reproducible with an onoff current contrast ratio of around 100. Furthermore, it was found that UV-to-visible rejection ratio observed from the TiO 2 nanowire PD was also larger, as compared to conventional film-type TiO 2 PDs.

Original languageEnglish
Pages (from-to)J132-J135
JournalJournal of the Electrochemical Society
Volume159
Issue number4
DOIs
Publication statusPublished - 2012

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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