Electrical and optical properties of poly(3,4-ethylenedioxythiophene) oxidized with poly(4-styrenesulfonate) and AuCl3-doped reduced graphene oxide/single-walled carbon nanotube films for ultraviolet light-emitting diodes

Byeong Ryong Lee, Jae Hoon Lee, Kyeong Heon Kim, Hee Dong Kim, Tae Geun Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report the effects of poly(3,4-ethylenedioxythiophene) oxidized with poly(4-styrenesulfonate) (PEDOT:PSS) and gold chloride (AuCl3) co-doping on the electrical and optical properties of reduced graphene oxide (RGO)/single-walled carbon nanotube (SWNT) films fabricated by dip-coating methods. The RGO/SWNT films were doped with both AuCl3 dissolved in nitromethane and PEDOT:PSS hole injection layers by spin coating to improve their electrical properties by increasing the work function of the RGO/SWNT films, thereby reducing the Schottky barrier height between the RGO/SWNT and p-GaN films. As a result, we obtained a reduced sheet resistance of 851.9 Ω/Ω and a contact resistance of 1.97 × 10-1 Ω·cm2, together with a high transmittance of 84.1% at 380 nm. The contact resistance of these films should be further reduced to fully utilize the feature of the electrode scheme proposed in this work, but the current result suggests its potential use as a transparent conductive electrode for ultraviolet light-emitting diodes.

Original languageEnglish
Pages (from-to)9114-9118
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume14
Issue number12
DOIs
Publication statusPublished - 2014 Dec 1

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Keywords

  • AuCl
  • Dip-Coating methods
  • p-GaN
  • PEDOT:PSS
  • RGO/SWNTs

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

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