Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence

Lin Zhu; Masahiro Yoshita; Jialing Tsai; Yichin Wang; Chungyu Hong; Guochung Ghi; Changsu Kim; Pei-Chen Yu; Hidefumi Akiyama

doi:10.1109/PVSC.2017.8366257

Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence

Lin Zhu, Masahiro Yoshita, Jialing Tsai, Yichin Wang, Chungyu Hong, Guochung Ghi, Changsu Kim, Pei-Chen Yu, Hidefumi Akiyama

Department of Photonics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

By using absolute EL measurement, we characterize current-dependent external radiative efficiency of GaInAs/GaAsP multiple-quantum-well (MQW) single-junction solar cells with and without a back distributed Bragg reflector (DBR). We quantified the internal radiative efficiency (η _η ) under illuminated condition for analyzing their difference in photovoltaic performances. It was revealed that MQWs showed an advantage of improved qint compared with a bulk layer, and that a back DBR indeed improved conversion efficiency via double-pass absorption of sun light, but improvement via reduction of rear radiative emission loss toward substrate was small. Efficiency add-on via improved material quality, or qint, in the same structures was predicted.

Original language	English
Title of host publication	2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1-4
Number of pages	4
ISBN (Electronic)	9781509056057
DOIs	https://doi.org/10.1109/PVSC.2017.8366257
State	Published - 1 Jan 2017
Event	44th IEEE Photovoltaic Specialist Conference, PVSC 2017 - Washington, United States Duration: 25 Jun 2017 → 30 Jun 2017

Publication series

Name	2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017

Conference

Conference	44th IEEE Photovoltaic Specialist Conference, PVSC 2017
Country	United States
City	Washington
Period	25/06/17 → 30/06/17

Keywords

Absolute electroluminescence
Distributed Bragg reflector
GaAs
Quantum wells
Solar cells

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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10.1109/PVSC.2017.8366257

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Zhu, L., Yoshita, M., Tsai, J., Wang, Y., Hong, C., Ghi, G., Kim, C., Yu, P-C., & Akiyama, H. (2017). Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence. In 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017 (pp. 1-4). (2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2017.8366257

Zhu, Lin ; Yoshita, Masahiro ; Tsai, Jialing ; Wang, Yichin ; Hong, Chungyu ; Ghi, Guochung ; Kim, Changsu ; Yu, Pei-Chen ; Akiyama, Hidefumi. / Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence. 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017. Institute of Electrical and Electronics Engineers Inc., 2017. pp. 1-4 (2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017).

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title = "Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence",

abstract = " By using absolute EL measurement, we characterize current-dependent external radiative efficiency of GaInAs/GaAsP multiple-quantum-well (MQW) single-junction solar cells with and without a back distributed Bragg reflector (DBR). We quantified the internal radiative efficiency (η η ) under illuminated condition for analyzing their difference in photovoltaic performances. It was revealed that MQWs showed an advantage of improved qint compared with a bulk layer, and that a back DBR indeed improved conversion efficiency via double-pass absorption of sun light, but improvement via reduction of rear radiative emission loss toward substrate was small. Efficiency add-on via improved material quality, or qint, in the same structures was predicted. ",

keywords = "Absolute electroluminescence, Distributed Bragg reflector, GaAs, Quantum wells, Solar cells",

author = "Lin Zhu and Masahiro Yoshita and Jialing Tsai and Yichin Wang and Chungyu Hong and Guochung Ghi and Changsu Kim and Pei-Chen Yu and Hidefumi Akiyama",

year = "2017",

month = jan,

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doi = "10.1109/PVSC.2017.8366257",

language = "English",

series = "2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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Zhu, L, Yoshita, M, Tsai, J, Wang, Y, Hong, C, Ghi, G, Kim, C, Yu, P-C & Akiyama, H 2017, Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence. in 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017. 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017, Institute of Electrical and Electronics Engineers Inc., pp. 1-4, 44th IEEE Photovoltaic Specialist Conference, PVSC 2017, Washington, United States, 25/06/17. https://doi.org/10.1109/PVSC.2017.8366257

Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence. / Zhu, Lin; Yoshita, Masahiro; Tsai, Jialing; Wang, Yichin; Hong, Chungyu; Ghi, Guochung; Kim, Changsu; Yu, Pei-Chen; Akiyama, Hidefumi.

2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 1-4 (2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence

AU - Zhu, Lin

AU - Yoshita, Masahiro

AU - Tsai, Jialing

AU - Wang, Yichin

AU - Hong, Chungyu

AU - Ghi, Guochung

AU - Kim, Changsu

AU - Yu, Pei-Chen

AU - Akiyama, Hidefumi

PY - 2017/1/1

Y1 - 2017/1/1

N2 - By using absolute EL measurement, we characterize current-dependent external radiative efficiency of GaInAs/GaAsP multiple-quantum-well (MQW) single-junction solar cells with and without a back distributed Bragg reflector (DBR). We quantified the internal radiative efficiency (η η ) under illuminated condition for analyzing their difference in photovoltaic performances. It was revealed that MQWs showed an advantage of improved qint compared with a bulk layer, and that a back DBR indeed improved conversion efficiency via double-pass absorption of sun light, but improvement via reduction of rear radiative emission loss toward substrate was small. Efficiency add-on via improved material quality, or qint, in the same structures was predicted.

AB - By using absolute EL measurement, we characterize current-dependent external radiative efficiency of GaInAs/GaAsP multiple-quantum-well (MQW) single-junction solar cells with and without a back distributed Bragg reflector (DBR). We quantified the internal radiative efficiency (η η ) under illuminated condition for analyzing their difference in photovoltaic performances. It was revealed that MQWs showed an advantage of improved qint compared with a bulk layer, and that a back DBR indeed improved conversion efficiency via double-pass absorption of sun light, but improvement via reduction of rear radiative emission loss toward substrate was small. Efficiency add-on via improved material quality, or qint, in the same structures was predicted.

KW - Absolute electroluminescence

KW - Distributed Bragg reflector

KW - GaAs

KW - Quantum wells

KW - Solar cells

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DO - 10.1109/PVSC.2017.8366257

M3 - Conference contribution

AN - SCOPUS:85048514168

T3 - 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017

SP - 1

EP - 4

BT - 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017

PB - Institute of Electrical and Electronics Engineers Inc.

Y2 - 25 June 2017 through 30 June 2017

ER -

Zhu L, Yoshita M, Tsai J, Wang Y, Hong C, Ghi G et al. Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence. In 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017. Institute of Electrical and Electronics Engineers Inc. 2017. p. 1-4. (2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017). https://doi.org/10.1109/PVSC.2017.8366257

Diagnosis of GaInAs multiple-quantum-well solar cells with Bragg reflectors via absolute electroluminescence

Abstract

Publication series

Conference

Keywords

UN SDGs

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