ZnO nanowire-embedded Schottky diode for effective UV detection by the barrier reduction effect

Joondong Kim, Ju Hyung Yun, Chang Hyun Kim, Yun Chang Park, Ju Yeon Woo, Jeunghee Park, Jung Ho Lee, Junsin Yi, Chang-Soo Han

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

A zinc oxide nanowire(ZnO NW)-embedded Schottky diode was fabricated for UV detection. Two types of devices were prepared. The ZnO NW was positioned onto asymmetric metal electrodes (Al and Pt) for a Schottky device or symmetric metal electrodes (Al and Al) for an ohmic device, respectively. The Schottky device provided a rectifying current flow and was more sensitive to UV illumination than the ohmic device. The Schottky barrier plays an important role for UV detection by a UV-induced barrier reduction effect. The fabrication of the ZnO NW-embedded Schottky diode and the UV reaction mechanism are discussed in light of the UV light-induced Schottky barrier reduction effect.

Original languageEnglish
Article number115205
JournalNanotechnology
Volume21
Issue number11
DOIs
Publication statusPublished - 2010 Mar 3
Externally publishedYes

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Nanowires
Zinc Oxide
Zinc oxide
Diodes
Equipment and Supplies
Metals
Electrodes
Ultraviolet radiation
Lighting
Fabrication
Ultraviolet Rays

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

ZnO nanowire-embedded Schottky diode for effective UV detection by the barrier reduction effect. / Kim, Joondong; Yun, Ju Hyung; Kim, Chang Hyun; Park, Yun Chang; Woo, Ju Yeon; Park, Jeunghee; Lee, Jung Ho; Yi, Junsin; Han, Chang-Soo.

In: Nanotechnology, Vol. 21, No. 11, 115205, 03.03.2010.

Research output: Contribution to journalArticle

Kim, Joondong ; Yun, Ju Hyung ; Kim, Chang Hyun ; Park, Yun Chang ; Woo, Ju Yeon ; Park, Jeunghee ; Lee, Jung Ho ; Yi, Junsin ; Han, Chang-Soo. / ZnO nanowire-embedded Schottky diode for effective UV detection by the barrier reduction effect. In: Nanotechnology. 2010 ; Vol. 21, No. 11.
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