90 0

White light emission of monolithic InGaN/GaN grown on morphology-controlled, nanostructured GaN templates

Title
White light emission of monolithic InGaN/GaN grown on morphology-controlled, nanostructured GaN templates
Author
박진섭
Keywords
white light-emitting diode; multi-facet GaN templates; nanostructured surface; selective area growth
Issue Date
2017-05
Publisher
IOP PUBLISHING LTD
Citation
NANOTECHNOLOGY, v. 28, no. 22, Article no. 225703
Abstract
We demonstrated an InGaN/GaN-based, monolithic, white light-emitting diode (LED) without phosphors by using morphology-controlled active layers formed on multi-facet GaN templates containing polar and semipolar surfaces. The nanostructured surface morphology was controlled by changing the growth time, and distinct multiple photoluminescence peaks were observed at 360, 460, and 560 nm; these features were caused by InGaN/GaN-based multiple quantum wells (MQWs) on the nanostructured facets. The origin of each multi-peak was related to the different indium (In) compositions in the different planes of the quantum wells grown on the nanostructured GaN. The emitting units of MQWs in the LED structures were continuously connected, which is different from other GaN-based nanorod or nanowire LEDs. Therefore, the suggested structure had a larger active area. From the electroluminescence spectrum of the fabricated LED, monolithic white light emission with CIE color coordinates of x = 0.306 and y = 0.333 was achieved via multi-facet control combined with morphology control of the metal organic chemical vapor deposition-selective area growth of InGaN/GaN MQWs.
URI
https://iopscience.iop.org/article/10.1088/1361-6528/aa6fddhttps://repository.hanyang.ac.kr/handle/20.500.11754/114058
ISSN
0957-4484; 1361-6528
DOI
10.1088/1361-6528/aa6fdd
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE