Enhanced and Balanced Charge Transport Boosting Ternary Solar Cells Over 17% Efficiency

Danqin Li; Lei Zhu; Xianjie Liu; Wei Xiao; Jianming Yang; Ruru Ma; Liming Ding; Feng Liu; Chungang Duan; Mats Fahlman; Qinye Bao

doi:10.1002/adma.202002344

Enhanced and Balanced Charge Transport Boosting Ternary Solar Cells Over 17% Efficiency

Danqin Li, Lei Zhu, Xianjie Liu, Wei Xiao, Jianming Yang, Ruru Ma, Liming Ding, Feng Liu, Chungang Duan, Mats Fahlman, Qinye Bao

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

163 Scopus citations

Abstract

Ternary architecture is one of the most effective strategies to boost the power conversion efficiency (PCE) of organic solar cells (OSCs). Here, an OSC with a ternary architecture featuring a highly crystalline molecular donor DRTB-T-C4 as a third component to the host binary system consisting of a polymer donor PM6 and a nonfullerene acceptor Y6 is reported. The third component is used to achieve enhanced and balanced charge transport, contributing to an improved fill factor (FF) of 0.813 and yielding an impressive PCE of 17.13%. The heterojunctions are designed using so-called pinning energies to promote exciton separation and reduce recombination loss. In addition, the preferential location of DRTB-T-C4 at the interface between PM6 and Y6 plays an important role in optimizing the morphology of the active layer.

Original language	English
Article number	2002344
Journal	Advanced Materials
Volume	32
Issue number	34
DOIs	https://doi.org/10.1002/adma.202002344
State	Published - 1 Aug 2020

Keywords

charge transport
efficiency
fill factor
integer charge transfer
ternary solar cells

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10.1002/adma.202002344

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title = "Enhanced and Balanced Charge Transport Boosting Ternary Solar Cells Over 17\% Efficiency",

abstract = "Ternary architecture is one of the most effective strategies to boost the power conversion efficiency (PCE) of organic solar cells (OSCs). Here, an OSC with a ternary architecture featuring a highly crystalline molecular donor DRTB-T-C4 as a third component to the host binary system consisting of a polymer donor PM6 and a nonfullerene acceptor Y6 is reported. The third component is used to achieve enhanced and balanced charge transport, contributing to an improved fill factor (FF) of 0.813 and yielding an impressive PCE of 17.13\%. The heterojunctions are designed using so-called pinning energies to promote exciton separation and reduce recombination loss. In addition, the preferential location of DRTB-T-C4 at the interface between PM6 and Y6 plays an important role in optimizing the morphology of the active layer.",

keywords = "charge transport, efficiency, fill factor, integer charge transfer, ternary solar cells",

author = "Danqin Li and Lei Zhu and Xianjie Liu and Wei Xiao and Jianming Yang and Ruru Ma and Liming Ding and Feng Liu and Chungang Duan and Mats Fahlman and Qinye Bao",

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year = "2020",

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doi = "10.1002/adma.202002344",

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T1 - Enhanced and Balanced Charge Transport Boosting Ternary Solar Cells Over 17% Efficiency

AU - Li, Danqin

AU - Zhu, Lei

AU - Liu, Xianjie

AU - Xiao, Wei

AU - Yang, Jianming

AU - Ma, Ruru

AU - Ding, Liming

AU - Liu, Feng

AU - Duan, Chungang

AU - Fahlman, Mats

AU - Bao, Qinye

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Ternary architecture is one of the most effective strategies to boost the power conversion efficiency (PCE) of organic solar cells (OSCs). Here, an OSC with a ternary architecture featuring a highly crystalline molecular donor DRTB-T-C4 as a third component to the host binary system consisting of a polymer donor PM6 and a nonfullerene acceptor Y6 is reported. The third component is used to achieve enhanced and balanced charge transport, contributing to an improved fill factor (FF) of 0.813 and yielding an impressive PCE of 17.13%. The heterojunctions are designed using so-called pinning energies to promote exciton separation and reduce recombination loss. In addition, the preferential location of DRTB-T-C4 at the interface between PM6 and Y6 plays an important role in optimizing the morphology of the active layer.

AB - Ternary architecture is one of the most effective strategies to boost the power conversion efficiency (PCE) of organic solar cells (OSCs). Here, an OSC with a ternary architecture featuring a highly crystalline molecular donor DRTB-T-C4 as a third component to the host binary system consisting of a polymer donor PM6 and a nonfullerene acceptor Y6 is reported. The third component is used to achieve enhanced and balanced charge transport, contributing to an improved fill factor (FF) of 0.813 and yielding an impressive PCE of 17.13%. The heterojunctions are designed using so-called pinning energies to promote exciton separation and reduce recombination loss. In addition, the preferential location of DRTB-T-C4 at the interface between PM6 and Y6 plays an important role in optimizing the morphology of the active layer.

KW - charge transport

KW - efficiency

KW - fill factor

KW - integer charge transfer

KW - ternary solar cells

UR - https://www.scopus.com/pages/publications/85088149398

U2 - 10.1002/adma.202002344

DO - 10.1002/adma.202002344

M3 - 文章

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AN - SCOPUS:85088149398

SN - 0935-9648

VL - 32

JO - Advanced Materials

JF - Advanced Materials

IS - 34

M1 - 2002344

ER -

Enhanced and Balanced Charge Transport Boosting Ternary Solar Cells Over 17% Efficiency

Abstract

Keywords

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