RCEPD with Enhanced Light Absorption by Crown-Shaped Quantum Well

Gun Wu Ju; Byung Hoon Na; Hee Ju Choi; Kwang Wook Park; Young Min Song; Yong Tak Lee

doi:10.1109/LPT.2015.2450022

RCEPD with Enhanced Light Absorption by Crown-Shaped Quantum Well

Gun Wu Ju
, Byung Hoon Na
, Hee Ju Choi
, Kwang Wook Park
, Young Min Song
, Yong Tak Lee

Electronic Materials Engineering

Gwangju Institute of Science and Technology
Samsung
Pusan National University

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

6 Scopus citations

Abstract

A high-performance resonant cavity enhanced photodetector (RCEPD) is developed by introducing an InGaAs/GaAs crown-shaped quantum well (CSQW) structure. In calculation, the absorption coefficient of the proposed CSQW structure is significantly enhanced by 47.8% compared with that of the conventional QW without increasing the electric field due to the large overlap of electron/hole-wave functions. To verify the feasibility of our proposed QW structure, we fabricate RCEPDs with a designed CSQW and the conventional QW structure. The fabricated CSQW-RCEPD exhibits a maximum quantum efficiency of 45.4%, an improvement of 36.2% in comparison with the conventional RCEPD. Moreover, the spectral bandwidth is 4.7 nm in the CSQW-RCEPD, which is in good agreement with the calculated result. The RCEPD with enhanced light absorption using a CSQW structure is highly promising for optical interconnect and sensing applications.

Original language	English
Article number	7134750
Pages (from-to)	2047-2050
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	27
Issue number	19
DOIs	https://doi.org/10.1109/LPT.2015.2450022
State	Published - 2015.10.1

Keywords

Quantum well (QW)
resonant-cavity-enhanced photodetector (RCEPD)

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10.1109/LPT.2015.2450022

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@article{c593546e929e411fa1cd889a8ea0d33d,

title = "RCEPD with Enhanced Light Absorption by Crown-Shaped Quantum Well",

abstract = "A high-performance resonant cavity enhanced photodetector (RCEPD) is developed by introducing an InGaAs/GaAs crown-shaped quantum well (CSQW) structure. In calculation, the absorption coefficient of the proposed CSQW structure is significantly enhanced by 47.8\% compared with that of the conventional QW without increasing the electric field due to the large overlap of electron/hole-wave functions. To verify the feasibility of our proposed QW structure, we fabricate RCEPDs with a designed CSQW and the conventional QW structure. The fabricated CSQW-RCEPD exhibits a maximum quantum efficiency of 45.4\%, an improvement of 36.2\% in comparison with the conventional RCEPD. Moreover, the spectral bandwidth is 4.7 nm in the CSQW-RCEPD, which is in good agreement with the calculated result. The RCEPD with enhanced light absorption using a CSQW structure is highly promising for optical interconnect and sensing applications.",

keywords = "Quantum well (QW), resonant-cavity-enhanced photodetector (RCEPD)",

author = "Ju, \{Gun Wu\} and Na, \{Byung Hoon\} and Choi, \{Hee Ju\} and Park, \{Kwang Wook\} and Song, \{Young Min\} and Lee, \{Yong Tak\}",

note = "Publisher Copyright: {\textcopyright} 1989-2012 IEEE.",

year = "2015",

month = oct,

day = "1",

doi = "10.1109/LPT.2015.2450022",

language = "English",

volume = "27",

pages = "2047--2050",

journal = "IEEE Photonics Technology Letters",

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T1 - RCEPD with Enhanced Light Absorption by Crown-Shaped Quantum Well

AU - Ju, Gun Wu

AU - Na, Byung Hoon

AU - Choi, Hee Ju

AU - Park, Kwang Wook

AU - Song, Young Min

AU - Lee, Yong Tak

PY - 2015/10/1

Y1 - 2015/10/1

N2 - A high-performance resonant cavity enhanced photodetector (RCEPD) is developed by introducing an InGaAs/GaAs crown-shaped quantum well (CSQW) structure. In calculation, the absorption coefficient of the proposed CSQW structure is significantly enhanced by 47.8% compared with that of the conventional QW without increasing the electric field due to the large overlap of electron/hole-wave functions. To verify the feasibility of our proposed QW structure, we fabricate RCEPDs with a designed CSQW and the conventional QW structure. The fabricated CSQW-RCEPD exhibits a maximum quantum efficiency of 45.4%, an improvement of 36.2% in comparison with the conventional RCEPD. Moreover, the spectral bandwidth is 4.7 nm in the CSQW-RCEPD, which is in good agreement with the calculated result. The RCEPD with enhanced light absorption using a CSQW structure is highly promising for optical interconnect and sensing applications.

AB - A high-performance resonant cavity enhanced photodetector (RCEPD) is developed by introducing an InGaAs/GaAs crown-shaped quantum well (CSQW) structure. In calculation, the absorption coefficient of the proposed CSQW structure is significantly enhanced by 47.8% compared with that of the conventional QW without increasing the electric field due to the large overlap of electron/hole-wave functions. To verify the feasibility of our proposed QW structure, we fabricate RCEPDs with a designed CSQW and the conventional QW structure. The fabricated CSQW-RCEPD exhibits a maximum quantum efficiency of 45.4%, an improvement of 36.2% in comparison with the conventional RCEPD. Moreover, the spectral bandwidth is 4.7 nm in the CSQW-RCEPD, which is in good agreement with the calculated result. The RCEPD with enhanced light absorption using a CSQW structure is highly promising for optical interconnect and sensing applications.

KW - Quantum well (QW)

KW - resonant-cavity-enhanced photodetector (RCEPD)

UR - https://www.scopus.com/pages/publications/84940986755

U2 - 10.1109/LPT.2015.2450022

DO - 10.1109/LPT.2015.2450022

M3 - Journal article

AN - SCOPUS:84940986755

SN - 1041-1135

VL - 27

SP - 2047

EP - 2050

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 19

M1 - 7134750

ER -

RCEPD with Enhanced Light Absorption by Crown-Shaped Quantum Well

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Keywords

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