Formation of Sb-doped SnO 2 p-type ohmic contact for near-UV GaN -based LEDs by a CIO interlayer

Hyun Gi Hong, June O. Song, Hyunseok Na, Hyunsoo Kim, Kyoung Kook Kim, Tae Yeon Seong

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A Cu-doped In2 O3 (CIO) interlayer was introduced to enhance the electrical and optical properties of Sb-doped SnO2 (ATO) p-type electrodes grown by pulsed laser deposition. CIO (2.5 nm) /ATO (250 nm) contacts become ohmic with specific contact resistance of 2.1× 10-3 cm2 and give transmittance of ∼81% at 400 nm, when annealed at 630°C for 1 min in air. Near-UV (400 nm) GaN -based light-emitting diodes (LEDs) fabricated with the CIO/ATO p-electrodes give forward-bias voltage of 3.91 V at injection current of 20 mA and show much higher output power compared to LEDs with conventional NiAu p-electrodes.

Original languageEnglish
Pages (from-to)254-256
Number of pages3
JournalElectrochemical and Solid-State Letters
Volume10
Issue number9
DOIs
Publication statusPublished - 2007 Aug 1

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Ohmic contacts
Light emitting diodes
electric contacts
interlayers
light emitting diodes
Electrodes
electrodes
Contact resistance
Pulsed laser deposition
Bias voltage
contact resistance
pulsed laser deposition
transmittance
Electric properties
Optical properties
electrical properties
injection
optical properties
output
air

ASJC Scopus subject areas

  • Electrochemistry
  • Materials Science(all)

Cite this

Formation of Sb-doped SnO 2 p-type ohmic contact for near-UV GaN -based LEDs by a CIO interlayer. / Hong, Hyun Gi; Song, June O.; Na, Hyunseok; Kim, Hyunsoo; Kim, Kyoung Kook; Seong, Tae Yeon.

In: Electrochemical and Solid-State Letters, Vol. 10, No. 9, 01.08.2007, p. 254-256.

Research output: Contribution to journalArticle

Hong, Hyun Gi ; Song, June O. ; Na, Hyunseok ; Kim, Hyunsoo ; Kim, Kyoung Kook ; Seong, Tae Yeon. / Formation of Sb-doped SnO 2 p-type ohmic contact for near-UV GaN -based LEDs by a CIO interlayer. In: Electrochemical and Solid-State Letters. 2007 ; Vol. 10, No. 9. pp. 254-256.
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AU - Kim, Kyoung Kook

AU - Seong, Tae Yeon

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