Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality

Lin Zhu; Toshimitsu Mochizuki; Masahiro Yoshita; Shaoqiang Chen; Shintaroh Sato; Changsu Kim; Hidefumi Akiyama; Yoshihiko Kanemitsu

doi:10.1109/PVSC.2014.6925662

Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality

Lin Zhu^*
, Toshimitsu Mochizuki
, Masahiro Yoshita
, Shaoqiang Chen
, Shintaroh Sato
, Changsu Kim
, Hidefumi Akiyama
, Yoshihiko Kanemitsu

^*此作品的通讯作者

科研成果: 书/报告/会议事项章节 › 会议稿件 › 同行评审

4 引用（Scopus）

摘要

To examine practical efficiency limits of tandem solar cells, we calculated conversion efficiency (η_sc) and optimized sub-cell band-gap energies (E_g) in 1-, 2-, 3-, 4-, and 5-junction cells via a detailed-balance theory, taking account of the realistic internal luminescence quantum yields (y_int) of the sub-cell materials. We found that η_sc drastically decreases as the geometric mean y_int∗ of all sub-cells' y_int drops from 1 to 0.1, and decreases proportionally to logy_int ∗ in the low-y_int ∗ region. Even with moderate material quality with y_int ∗ = 0.001, η_sc above 30% (35%) should be still available in 2-junction (3-junction) tandem cells, though we need optimized designs with much higher E_g than those known for the ideal cases with y_int ∗ = 1.

源语言	英语
主期刊名	2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
出版商	Institute of Electrical and Electronics Engineers Inc.
页	3404-3408
页数	5
ISBN（电子版）	9781479943982
DOI	https://doi.org/10.1109/PVSC.2014.6925662
出版状态	已出版 - 15 10月 2014
已对外发布	是
活动	40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, 美国期限: 8 6月 2014 → 13 6月 2014

出版系列

姓名	2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

会议

会议	40th IEEE Photovoltaic Specialist Conference, PVSC 2014
国家/地区	美国
市	Denver
时期	8/06/14 → 13/06/14

联合国可持续发展目标

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可持续发展目标 7 经济适用的清洁能源

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10.1109/PVSC.2014.6925662

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链接到 Scopus 的出版物

引用此

Zhu, L., Mochizuki, T., Yoshita, M., Chen, S., Sato, S., Kim, C., Akiyama, H., & Kanemitsu, Y. (2014). Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality. 在 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014 (页码 3404-3408). 文章 6925662 (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2014.6925662

Zhu, Lin ; Mochizuki, Toshimitsu ; Yoshita, Masahiro 等. / Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality. 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. 页码 3404-3408 (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014).

@inproceedings{d817fab07961424abaf904eca2b1228d,

title = "Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality",

abstract = "To examine practical efficiency limits of tandem solar cells, we calculated conversion efficiency (ηsc) and optimized sub-cell band-gap energies (Eg) in 1-, 2-, 3-, 4-, and 5-junction cells via a detailed-balance theory, taking account of the realistic internal luminescence quantum yields (yint) of the sub-cell materials. We found that ηsc drastically decreases as the geometric mean yint∗ of all sub-cells' yint drops from 1 to 0.1, and decreases proportionally to logyint ∗ in the low-yint ∗ region. Even with moderate material quality with yint ∗ = 0.001, ηsc above 30\% (35\%) should be still available in 2-junction (3-junction) tandem cells, though we need optimized designs with much higher Eg than those known for the ideal cases with yint ∗ = 1.",

keywords = "Design optimization, Energy efficiency, Luminescence, Photovoltaic cells, Semiconductor materials, Solar power generation",

author = "Lin Zhu and Toshimitsu Mochizuki and Masahiro Yoshita and Shaoqiang Chen and Shintaroh Sato and Changsu Kim and Hidefumi Akiyama and Yoshihiko Kanemitsu",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; 40th IEEE Photovoltaic Specialist Conference, PVSC 2014 ; Conference date: 08-06-2014 Through 13-06-2014",

year = "2014",

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doi = "10.1109/PVSC.2014.6925662",

language = "英语",

series = "2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014",

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Zhu, L, Mochizuki, T, Yoshita, M, Chen, S, Sato, S, Kim, C, Akiyama, H & Kanemitsu, Y 2014, Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality. 在 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014., 6925662, 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014, Institute of Electrical and Electronics Engineers Inc., 页码 3404-3408, 40th IEEE Photovoltaic Specialist Conference, PVSC 2014, Denver, 美国, 8/06/14. https://doi.org/10.1109/PVSC.2014.6925662

Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality. / Zhu, Lin; Mochizuki, Toshimitsu; Yoshita, Masahiro 等.
2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. 页码 3404-3408 6925662 (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014).

科研成果: 书/报告/会议事项章节 › 会议稿件 › 同行评审

TY - GEN

T1 - Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality

AU - Zhu, Lin

AU - Mochizuki, Toshimitsu

AU - Yoshita, Masahiro

AU - Chen, Shaoqiang

AU - Sato, Shintaroh

AU - Kim, Changsu

AU - Akiyama, Hidefumi

AU - Kanemitsu, Yoshihiko

PY - 2014/10/15

Y1 - 2014/10/15

N2 - To examine practical efficiency limits of tandem solar cells, we calculated conversion efficiency (ηsc) and optimized sub-cell band-gap energies (Eg) in 1-, 2-, 3-, 4-, and 5-junction cells via a detailed-balance theory, taking account of the realistic internal luminescence quantum yields (yint) of the sub-cell materials. We found that ηsc drastically decreases as the geometric mean yint∗ of all sub-cells' yint drops from 1 to 0.1, and decreases proportionally to logyint ∗ in the low-yint ∗ region. Even with moderate material quality with yint ∗ = 0.001, ηsc above 30% (35%) should be still available in 2-junction (3-junction) tandem cells, though we need optimized designs with much higher Eg than those known for the ideal cases with yint ∗ = 1.

AB - To examine practical efficiency limits of tandem solar cells, we calculated conversion efficiency (ηsc) and optimized sub-cell band-gap energies (Eg) in 1-, 2-, 3-, 4-, and 5-junction cells via a detailed-balance theory, taking account of the realistic internal luminescence quantum yields (yint) of the sub-cell materials. We found that ηsc drastically decreases as the geometric mean yint∗ of all sub-cells' yint drops from 1 to 0.1, and decreases proportionally to logyint ∗ in the low-yint ∗ region. Even with moderate material quality with yint ∗ = 0.001, ηsc above 30% (35%) should be still available in 2-junction (3-junction) tandem cells, though we need optimized designs with much higher Eg than those known for the ideal cases with yint ∗ = 1.

KW - Design optimization

KW - Energy efficiency

KW - Luminescence

KW - Photovoltaic cells

KW - Semiconductor materials

KW - Solar power generation

UR - https://www.scopus.com/pages/publications/84912121674

U2 - 10.1109/PVSC.2014.6925662

DO - 10.1109/PVSC.2014.6925662

M3 - 会议稿件

AN - SCOPUS:84912121674

T3 - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

SP - 3404

EP - 3408

BT - 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 40th IEEE Photovoltaic Specialist Conference, PVSC 2014

Y2 - 8 June 2014 through 13 June 2014

ER -

Zhu L, Mochizuki T, Yoshita M, Chen S, Sato S, Kim C 等. Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality. 在 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc. 2014. 页码 3404-3408. 6925662. (2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014). doi: 10.1109/PVSC.2014.6925662

Conversion efficiency limits and optimized designs for tandem solar cells with realistic sub-cell material quality

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出版系列

会议

联合国可持续发展目标

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