Hybrid indium tin oxide/Ag nanowire electrodes for improving the light output power of near ultraviolet AlGaN-based light-emitting diode

Jae Seong Park, Jae Ho Kim, Jun Yong Kim, Dae Hyun Kim, Daesung Kang, Jun Suk Sung, Tae Yeon Seong

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Ag nanowires (Ag NWs) were combined with a thin indium tin oxide (ITO) film as the p-type electrode in near ultraviolet (NUV) AlGaN-based light-emitting diodes (LEDs) to improve the light output power. The Ag NWs (30 ± 5 nm in diameter and 25 ± 5 μm long) were dispersed in ethanol (0.3 wt%). The transmittances of 10 nm-thick ITO, ITO/Ag NWs coated at 1000 rpm, and ITO/Ag NWs coated at 3000 rpm were 98%, 90%, and 97% at 385 nm, respectively. LEDs (chip size: 300 × 800 μm2) fabricated with the ITO/Ag NW electrode exhibited higher forward-bias voltages than the LEDs with the ITO-only electrode. However, LEDs with ITO/Ag NWs films coated at 1000 and 3000 rpm yielded 7.9 and 14.0% higher light output power, respectively, at 100 mA than the LED with ITO-only electrode. The improved output power with the ITO/Ag NWs films is attributed to an optimal trade-off between optical transmittance and current spreading.

Original languageEnglish
Pages (from-to)545-548
Number of pages4
JournalCurrent Applied Physics
Volume16
Issue number5
DOIs
Publication statusPublished - 2016 May 1

Fingerprint

Tin oxides
indium oxides
Indium
tin oxides
Nanowires
Light emitting diodes
nanowires
light emitting diodes
Electrodes
electrodes
output
transmittance
aluminum gallium nitride
indium tin oxide
Opacity
Bias voltage
Oxide films
oxide films
Ethanol
ethyl alcohol

Keywords

  • Current spreading
  • Near ultraviolet light-emitting diodes
  • Silver nanowires

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Hybrid indium tin oxide/Ag nanowire electrodes for improving the light output power of near ultraviolet AlGaN-based light-emitting diode. / Park, Jae Seong; Kim, Jae Ho; Kim, Jun Yong; Kim, Dae Hyun; Kang, Daesung; Sung, Jun Suk; Seong, Tae Yeon.

In: Current Applied Physics, Vol. 16, No. 5, 01.05.2016, p. 545-548.

Research output: Contribution to journalArticle

Park, Jae Seong ; Kim, Jae Ho ; Kim, Jun Yong ; Kim, Dae Hyun ; Kang, Daesung ; Sung, Jun Suk ; Seong, Tae Yeon. / Hybrid indium tin oxide/Ag nanowire electrodes for improving the light output power of near ultraviolet AlGaN-based light-emitting diode. In: Current Applied Physics. 2016 ; Vol. 16, No. 5. pp. 545-548.
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