Yellow-red light-emitting diodes using periodic Ga-flow interruptionduring deposition of InGaN well

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/487068.do
DOI
10.1364/OE.25.015152
Title
Yellow-red light-emitting diodes using periodic Ga-flow interruptionduring deposition of InGaN well
Description
This work was supported by a National Research Foundation of Korea (NRF)funded by the Ministry of Science, ICT and Future Planning (No.2015042417), and by the Ministry of Education (No. 2015R1D1A1A01060681).
abstract
We report a possible way to extend the emission wavelength of InyGa1-yN/InxGa1-xN quantum-well (QW) light-emitting diodes (LEDs) to the yellow-red spectral range with little degradation of the radiative efficiency. The InyGa(1-y)N well with high indium (In) content (HI-InyGa1-yN) was realized by periodic Ga-flow interruption (Ga-FI). The In contents of the HI-InyGa1-yN well and the InxGa(1-x)N barrier were changed to manipulate the emission wavelength of the LEDs. An In0.34Ga0.66N/In0.1Ga0.9N-QW LED, grown by continuous growth mode (C-LED), was prepared as a reference. The photoluminescence (PL) wavelengths of the HI-InyGa(1-y)N/InxGa1-xN QW LEDs were changed from 556 to 597 nm. The PL intensity of the HI-InyGa1-yN/InxGa1-xN LED with a peak wavelength of 563 nm was 2.7 times stronger than that of the C-LED (lambda = 565 nm). The luminescence intensity for the HI-InyGa1-yN/InxGa1-xN QW LED emitting at 597 nm was stronger than those of the other LED samples with shorter wavelengths. Considering the previous works on degradation in crystal quality and increase in the quantum-confined Stark effect with increasing In content in InGaN, the approach in this work is very promising for yellow-red InGaN LEDs.
provenance
Made available in Cube on 2018-09-28T16:24:24Z (GMT). No. of bitstreams: 0
language
English
author
Lee, Kwanjae
Lee, Hamin
Lee, Cheul-Ro
Chung, Tae-Hoon
Kim, Yoon Seok
Leem, Jae-Young
Jeong, Kwang-Un
Kim, Jin Soo
accessioned
2018-09-28T16:24:24Z
available
2018-09-28T16:24:24Z
issued
2017
citation
OPTICS EXPRESS(25): 13
issn
1094-4087
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/487068.do
Funder
교육부
Funding Program
BK21플러스사업(0.5)
Project ID
1345274239
Jurisdiction
Rep.of Korea
Project Name
Heptic Polymer Composites Research Team
rights
openAccess
type
article


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