Light output enhancement of GaN-based light-emitting diodes using ZnO nanorod arrays produced by aqueous solution growth technique

Saikat Dalui, Chih Chien Lin, Hsin Ying Lee, Chia Hsin Chao, Ching Ting Lee

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

ZnO nanorod arrays were successfully deposited on GaN-based light-emitting diodes (LEDs) using the aqueous solution growth technique. A 20.3% light output enhancement of the LEDs with ZnO nanorod array was obtained at an injection current of 100 mA. With the presence of the ZnO nanorod array, divergence of the light output was reduced and the light output was confined in a smaller escape cone of about 30° rather than 42° of the conventional LEDs. Currentvoltage characteristics and electroluminescence measurements confirmed that there was no significant change in electrical and optical properties of these LEDs with ZnO nanorod arrays.

Original languageEnglish
Article number5512704
Pages (from-to)1220-1222
Number of pages3
JournalIEEE Photonics Technology Letters
Volume22
Issue number16
DOIs
Publication statusPublished - 2010 Jul 29

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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