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Title: Suppressing Nonradiative Recombination in Crown-Shaped Quantum Wells

Abstract

We examined the structural and optical properties of a crown-shaped quantum well (CSQW) to suppress nonradiative recombination. To reduce carrier loss in defect traps at the well/barrier interface, the CSQW was designed to concentrate carriers in the central region by tailoring the bandgap energy. Temperature-dependent photoluminescence measurements showed that the CSQW had a high activation energy and low potential fluctuation. In addition, the long carrier lifetime of the CSQW at high temperatures can be interpreted as indicating a decrease in carrier loss at defect traps.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [4];  [4];  [4];  [5];  [4]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. Gwangju Institute of Science and Technology; Korea Institute of Science and Technology
  3. Samsung Advanced Institute of Technology
  4. Gwangju Institute of Science and Technology
  5. Korea Institute of Science and Technology
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1427351
Report Number(s):
NREL/JA-5K00-71137
Journal ID: ISSN 1347-4065
DOE Contract Number:
AC36-08GO28308
Resource Type:
Journal Article
Resource Relation:
Journal Name: Japanese Journal of Applied Physics (Online); Journal Volume: 57; Journal Issue: 3
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; activation energy; carrier lifetime; defects; optical properties; band gap energy; defect traps; high temperature; non-radiative recombinations; potential fluctuations; structural and optical properties; temperature dependent photoluminescences; semiconductor quantum wells

Citation Formats

Park, Kwangwook, Ju, Gunwu, Na, Byung Hoon, Hwang, Hyeong-Yong, Jho, Young-Dahl, Myoung, NoSoung, Yim, Sang-Youp, Kim, Hyung-jun, and Lee, Yong Tak. Suppressing Nonradiative Recombination in Crown-Shaped Quantum Wells. United States: N. p., 2018. Web. doi:10.7567/JJAP.57.030305.
Park, Kwangwook, Ju, Gunwu, Na, Byung Hoon, Hwang, Hyeong-Yong, Jho, Young-Dahl, Myoung, NoSoung, Yim, Sang-Youp, Kim, Hyung-jun, & Lee, Yong Tak. Suppressing Nonradiative Recombination in Crown-Shaped Quantum Wells. United States. doi:10.7567/JJAP.57.030305.
Park, Kwangwook, Ju, Gunwu, Na, Byung Hoon, Hwang, Hyeong-Yong, Jho, Young-Dahl, Myoung, NoSoung, Yim, Sang-Youp, Kim, Hyung-jun, and Lee, Yong Tak. Tue . "Suppressing Nonradiative Recombination in Crown-Shaped Quantum Wells". United States. doi:10.7567/JJAP.57.030305.
@article{osti_1427351,
title = {Suppressing Nonradiative Recombination in Crown-Shaped Quantum Wells},
author = {Park, Kwangwook and Ju, Gunwu and Na, Byung Hoon and Hwang, Hyeong-Yong and Jho, Young-Dahl and Myoung, NoSoung and Yim, Sang-Youp and Kim, Hyung-jun and Lee, Yong Tak},
abstractNote = {We examined the structural and optical properties of a crown-shaped quantum well (CSQW) to suppress nonradiative recombination. To reduce carrier loss in defect traps at the well/barrier interface, the CSQW was designed to concentrate carriers in the central region by tailoring the bandgap energy. Temperature-dependent photoluminescence measurements showed that the CSQW had a high activation energy and low potential fluctuation. In addition, the long carrier lifetime of the CSQW at high temperatures can be interpreted as indicating a decrease in carrier loss at defect traps.},
doi = {10.7567/JJAP.57.030305},
journal = {Japanese Journal of Applied Physics (Online)},
number = 3,
volume = 57,
place = {United States},
year = {Tue Feb 06 00:00:00 EST 2018},
month = {Tue Feb 06 00:00:00 EST 2018}
}