Suppressing nonradiative recombination in crown-shaped quantum wells

Gunwu Ju; Byung Hoon Na; Kwangwook Park; Hyeong Yong Hwang; Young Dahl Jho; Nosoung Myoung; Sang Youp Yim; Hyung Jun Kim; Yong Tak Lee

doi:10.7567/JJAP.57.030305

Suppressing nonradiative recombination in crown-shaped quantum wells

Gunwu Ju
, Byung Hoon Na
, Kwangwook Park
, Hyeong Yong Hwang
, Young Dahl Jho
, Nosoung Myoung
, Sang Youp Yim
, Hyung Jun Kim
, Yong Tak Lee^*

^*Corresponding author for this work

Electronic Materials Engineering

Gwangju Institute of Science and Technology
Korea Institute of Science and Technology
Samsung
National Renewable Energy Laboratory

Research output: Contribution to journal › Journal article › peer-review

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.

Original language	English
Article number	030305
Journal	Japanese Journal of Applied Physics
Volume	57
Issue number	3
DOIs	https://doi.org/10.7567/JJAP.57.030305
State	Published - 2018.03

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10.7567/JJAP.57.030305

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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.",

author = "Gunwu Ju and Na, \{Byung Hoon\} and Kwangwook Park and Hwang, \{Hyeong Yong\} and Jho, \{Young Dahl\} and Nosoung Myoung and Yim, \{Sang Youp\} and Kim, \{Hyung Jun\} and Lee, \{Yong Tak\}",

note = "Publisher Copyright: {\textcopyright} 2018 The Japan Society of Applied Physics.",

year = "2018",

month = mar,

doi = "10.7567/JJAP.57.030305",

language = "English",

volume = "57",

journal = "Japanese Journal of Applied Physics",

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TY - JOUR

T1 - Suppressing nonradiative recombination in crown-shaped quantum wells

AU - Ju, Gunwu

AU - Na, Byung Hoon

AU - Park, Kwangwook

AU - Hwang, Hyeong Yong

AU - Jho, Young Dahl

AU - Myoung, Nosoung

AU - Yim, Sang Youp

AU - Kim, Hyung Jun

AU - Lee, Yong Tak

PY - 2018/3

Y1 - 2018/3

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85042654036

U2 - 10.7567/JJAP.57.030305

DO - 10.7567/JJAP.57.030305

M3 - Journal article

AN - SCOPUS:85042654036

SN - 0021-4922

VL - 57

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 3

M1 - 030305

ER -

Suppressing nonradiative recombination in crown-shaped quantum wells

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