Transparent conductive oxide films mixed with gallium oxide nanoparticle/single-walled carbon nanotube layer for deep ultraviolet light-emitting diodes

Kyoeng Heon Kim, Ho Myoung An, Hee Dong Kim, Tae Geun Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We propose a transparent conductive oxide electrode scheme of gallium oxide nanoparticle mixed with a single-walled carbon nanotube (Ga2O3 NP/SWNT) layer for deep ultraviolet light-emitting diodes using spin and dipping methods. We investigated the electrical, optical and morphological properties of the Ga2O3 NP/SWNT layers by increasing the thickness of SWNTs via multiple dipping processes. Compared with the undoped Ga2O3 films (current level 9.9 × 10-9 A @ 1 V, transmittance 68% @ 280 nm), the current level flowing in the Ga2O3 NP/SWNT increased by approximately 4 × 105 times and the transmittance improved by 9% after 15 times dip-coating (current level 4 × 10-4 A at 1 V; transmittance 77.0% at 280 nm). These improvements result from both native high transparency of Ga2O3 NPs and high conductivity and effective current spreading of SWNTs.

Original languageEnglish
Article number507
Pages (from-to)1-6
Number of pages6
JournalNanoscale Research Letters
Volume8
Issue number1
DOIs
Publication statusPublished - 2013

Keywords

  • Single-walled carbon nanotubes (SWNTs)
  • Ultraviolet transparent conductive oxide (UV TCO)

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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