White emission from non-planar InGaN/GaN MQW LEDs grown on GaN template with truncated hexagonal pyramids

Ming Lun Lee, Yu Hsiang Yeh, Shang Ju Tu, P. C. Chen, Wei Chih Lai, Jinn Kong Sheu

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Non-planar InGaN/GaN multiple quantum well (MQW) structures are grown on a GaN template with truncated hexagonal pyramids (THPs) featuring c-plane and r-plane surfaces. The THP array is formed by the regrowth of the GaN layer on a selective-area Si-implanted GaN template. Transmission electron microscopy shows that the InGaN/GaN epitaxial layers regrown on the THPs exhibit different growth rates and indium compositions of the InGaN layer between the c-plane and r-plane surfaces. Consequently, InGaN/GaN MQW light-emitting diodes grown on the GaN THP array emit multiple wavelengths approaching near white light.

Original languageEnglish
Pages (from-to)A401-A412
JournalOptics Express
Volume23
Issue number7
DOIs
Publication statusPublished - 2015 Apr 6

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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