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Emission Characteristics of InGaN/GaN Core-Shell Nanorods Embedded in a 3D Light-Emitting Diode

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Title
Emission Characteristics of InGaN/GaN Core-Shell Nanorods Embedded in a 3D Light-Emitting Diode
Author(s)
Jung B.O.; Bae S.-Y.; Lee S.; Sang Yun Kim; Jeong Yong Lee; Honda Y.; Amano H.
Subject
Core-shell structure, ; Gallium nitride, ; Light-emitting diodes, ; Nanorod
Publication Date
2016-04
Journal
NANOSCALE RESEARCH LETTERS, v.11, no.1, pp.215
Abstract
We report the selective-area growth of a gallium nitride (GaN)-nanorod-based InGaN/GaN multiple-quantum-well (MQW) core-shell structure embedded in a three-dimensional (3D) light-emitting diode (LED) grown by metalorganic chemical vapor deposition (MOCVD) and its optical analysis. High-resolution transmission electron microscopy (HR-TEM) observation revealed the high quality of the GaN nanorods and the position dependence of the structural properties of the InGaN/GaN MQWs on multiple facets. The excitation and temperature dependences of photoluminescence (PL) revealed the m-plane emission behaviors of the InGaN/GaN core-shell nanorods. The electroluminescence (EL) of the InGaN/GaN core-shell-nanorod-embedded 3D LED changed color from green to blue with increasing injection current. This phenomenon was mainly due to the energy gradient and deep localization of the indium in the selectively grown InGaN/GaN core-shell MQWs on the 3D architecture. © 2016, Jung et al
URI
https://pr.ibs.re.kr/handle/8788114/2726
DOI
10.1186/s11671-016-1441-6
ISSN
1556-276X
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > 1. Journal Papers (저널논문)
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