GaN MSM UV sensor using multi-layer graphene schottky electrodes

Chang Ju Lee, Hyeon Gu Cha, Seul Ki Hong, Seung Hyun Doh, Yi Sak Koo, Byung Jin Cho, Sung Ho Hahm

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

We demonstrated a metal-semiconductor-metal type GaN UV sensor for the first time by using multi-layer graphene as a Schottky electrode. Multi-layer graphene shows good Schottky electrode characteristic and fabricated UV sensor shows good UV response characteristics. The maximum dark current density and photo-responsive current density were 6.42 × 10-9 A/cm2 and 5.57 × 10-5 A/cm2 at the 10 V bias, respectively. UV/visible rejection ratios were higher than 103 with each applied bias from 1 V to 15 V.

Original languageEnglish
Title of host publicationQuantum, Nano, Micro Technologies and Applied Researches
Pages146-149
Number of pages4
DOIs
StatePublished - 2014
Event2013 2nd International Symposium on Quantum, Nano and Micro Technologies, ISQNM 2013 - , Singapore
Duration: 1 Dec 20132 Dec 2013

Publication series

NameApplied Mechanics and Materials
Volume481
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2013 2nd International Symposium on Quantum, Nano and Micro Technologies, ISQNM 2013
Country/TerritorySingapore
Period1/12/132/12/13

Keywords

  • GaN
  • Graphene
  • Metal-semiconductor-metal
  • Transparent electrode
  • UV sensor

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