@inproceedings{3723a0c3bb4d478d968988f80592b466,
title = "High-power phosphor-free InGaN/AlGaN dot-in-A-wire core-shell white light-emitting diodes",
abstract = "We report on the achievement of relatively high power phosphor-free white light-emitting diodes (LEDs) using a new self-organized InGaN/AlGaN dot-in-A-wire core-shell nanowire heterostructure. Multiple AlGaN shell layers are spontaneously formed during the growth of the quantum dot active region. Due to the drastically reduced nonradiative surface recombination, such core-shell nanowire structures exhibit significantly increased carrier lifetime (from ∼ 0.3ns to ∼ 4.5ns) and massively enhanced photoluminescence intensity. Strong white-light emission was recorded for the unpackaged core-shell nanowire LEDs with an output power of >5 mW, measured under an injection current ∼ 60A/cm2, with a color rendering index of ∼ 95.",
keywords = "and gallium nitride, light emitting diodes, molecular beam epitaxy, nanowire",
author = "Nguyen, {Hieu P.T.} and Mehrdad Djavid and Woo, {Steffi Y.} and Xianhe Liu and Qi Wang and Botton, {Gianluigi A.} and Zetian Mi",
year = "2015",
doi = "10.1117/12.2084777",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Streubel, {Klaus P.} and Heonsu Jeon and Li-Wei Tu and Martin Strassburg",
booktitle = "Light-Emitting Diodes",
note = "Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIX ; Conference date: 10-02-2015 Through 12-02-2015",
}