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Enhanced Light Output Power of Near-Ultraviolet Light-Emitting Diodes with Au-Doped Graphene for Transparent and Current-Spreading Electrode
- Authors
- Seo, TH[Seo, Tae Hoon]; Chae, SJ[Chae, Seung Jin]; Kim, BK[Kim, Bo Kyoung]; Shin, G[Shin, GangU]; Lee, YH[Lee, Young Hee]; Suh, EK[Suh, Eun-Kyung]
- Issue Date
- Nov-2012
- Publisher
- JAPAN SOC APPLIED PHYSICS
- Citation
- APPLIED PHYSICS EXPRESS, v.5, no.11
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS EXPRESS
- Volume
- 5
- Number
- 11
- ISSN
- 1882-0778
- Abstract
- We report the implementation of Au-doped graphene film as a transparent and current-spreading electrode (TCSE) in GaN-based near-ultraviolet (UV) light-emitting diode (LED) to achieve good UV emission efficiency. The TCSE effects of Au-doped graphene film were clearly seen in both the electroluminescence (EL) and current-voltage (I-V) characteristics. The EL output power of 380-nm wavelength UV-LEDs with Au-doped graphene film was enhanced by about 20% at an injection current of 20 mA compared with that of conventional UV-LEDs. The increase of the light output power is attributed to the high UV transmittance of graphene, effective current spreading, and injection. (C) 2012 The Japan Society of Applied Physics
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Collections - Science > Department of Physics > 1. Journal Articles
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