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

5 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
Pages (from-to)1-6
Number of pages6
JournalNanoscale Research Letters
Volume8
Issue number1
DOIs
Publication statusPublished - 2013 Dec 1

Fingerprint

gallium oxides
Conductive films
Single-walled carbon nanotubes (SWCN)
Gallium
ultraviolet radiation
Transparency
Oxides
Oxide films
Light emitting diodes
oxide films
light emitting diodes
carbon nanotubes
Nanoparticles
Coatings
transmittance
nanoparticles
Electrodes
dipping
coating
electrical properties

Keywords

  • Gallium oxide (GaO) nanoparticles (NPs)
  • Single-walled carbon nanotubes (SWNTs)
  • Ultraviolet transparent conductive oxide (UV TCO)

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Transparent conductive oxide films mixed with gallium oxide nanoparticle/single-walled carbon nanotube layer for deep ultraviolet light-emitting diodes. / Kim, Kyoeng Heon; An, Ho Myoung; Kim, Hee Dong; Kim, Tae Geun.

In: Nanoscale Research Letters, Vol. 8, No. 1, 01.12.2013, p. 1-6.

Research output: Contribution to journalArticle

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