Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 57, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/JJAP.57.030305
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Funding
- National Research Foundation of Korea (NRF) grant - Korea government [NRF-2016M1B3A1A01937575]
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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. (C) 2018 The Japan Society of Applied Physics
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