GaN UV photodetector by using transparency antimony-doped tin oxide electrode

Ming Lung Tu, Yan Kuin Su, Shoou Jinn Chang, Ricky W. Chuang

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


GaN metal-semiconductor-metal (MSM) ultraviolet photodetectors with antimony-doped tin oxide (ATO) transparent electrodes were fabricated and characterized. The ATO films with the thickness of 750 nm were deposited on GaN substrates by RF magnetron sputtering. The main X-ray peak of ATO film was identified as (1 0 1) using the X-ray diffraction (XRD) technique. The barrier height between ATO and GaN was determined to be 1.12 eV. Finally, the responsivity of undoped GaN-based MSM photodetectors with ATO electrodes measured at 325 nm under the bias voltage of 1 and 5 V was 0.051 and 0.095 A W-1, respectively.

Original languageEnglish
Pages (from-to)744-747
Number of pages4
JournalJournal of Crystal Growth
Issue numberSPEC. ISS
Publication statusPublished - 2007 Jan

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry


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