Light output improvement of GaN-based light-emitting diodes using hydrothermally grown ZnO nanotapers

Yung Chun Tu, Shui-Jinn Wang, Jia Ching Lin, Fu Shou Tsai, Tseng Hsing Lin, Kai Ming Uang, Tron Min Chen

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A new two-step hydrothermal growth (HTG) process with a shorter processing time and better growth control is proposed for the synthesis of ZnO nanotapers (NTs). The application of HTG ZnO NTs as surface roughening nanostructures to improve the light output power (Lop) of GaN-based LEDs is demonstrated. Compared with that of ZnO nanowires, the use of ZnO NTs leads to an improvement in Lop by 24.5% at 350 mA, which could be attributed to the fact that tapered ends of ZnO NTs offer more constructive photon scattering to maximize light extraction.

Original languageEnglish
Article number06GG13
JournalJapanese Journal of Applied Physics
Volume52
Issue number6 PART 2
DOIs
Publication statusPublished - 2013 Jun 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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