@inproceedings{1146adb700a041538083eebc30232a29,
title = "Phosphor-free white light-emitting diode using InGaN/GaN multiple quantum wells grown on microfacets",
abstract = "We demonstrate phosphor-free light-emitting diode (LED) by growing InGaN/GaN multiple quantum wells (MQWs) on the n-GaN microfacets. The white emission was realized by combining emissions from InGaN/GaN MQWs grown on cplane (0001), semipolar \{11-22\} and \{1-101\} facets which are selectively grown on n-GaN with trapezoidal shape arrays. The photoluminescence (PL) and electroluminescence (EL) measurement revealed that the long wavelength light was emitted from InGaN/GaN MQWs grown on c-plane (0001), while the short wavelength light was emitted from that of semipolar microfacets. The change in the emission wavelengths from each microfacets was due to the difference in the well thickness and In composition of each MQWs. The LED showed white emission at an injection current between 180 and 230 mA. These results suggested that white emission is possible without using the phosphor by combining emission lights emitted from microfacets.",
keywords = "c-plane (0001), Electroluminescence (EL), GaN, Microfacet, Semipolar \{1-101\}, White LED, \{11-22\}",
author = "Cho, \{Chu Young\} and Park, \{Il Kyu\} and Kwon, \{Min Ki\} and Kim, \{Ja Yeon\} and Park, \{Seong Ju\} and Jung, \{Dong Ryul\} and Kwon, \{Kwang Woo\}",
year = "2008",
doi = "10.1117/12.794575",
language = "English",
isbn = "9780819472786",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Eighth International Conference on Solid State Lighting",
note = "The International Society for Optical Engineering (SPIE) ; Conference date: 11-08-2008 Through 13-08-2008",
}