Ternary polymer solar cells with alloyed donor achieving 14.13% efficiency and 78.4% fill factor

Qiaoshi An; Jian Wang; Fujun Zhang

doi:10.1016/j.nanoen.2019.04.018

Ternary polymer solar cells with alloyed donor achieving 14.13% efficiency and 78.4% fill factor

Qiaoshi An, Jian Wang, Fujun Zhang^*

^*Corresponding author for this work

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

115 Citations (Scopus)

Abstract

The power conversion efficiency (PCE) reaches to 12.63% or 12.19% for polymer solar cells (PSCs) based on PM6 or J71 as donor and Br-ITIC as acceptor, respectively. A series of ternary PSCs with two donors were fabricated by combining the merits of the two binary PSCs. The PM6 and J71 prefer to form alloyed donor due to the good compatibility, which is beneficial to finely optimize photon harvesting and phase separation of ternary active layers, leading to simultaneous improvement of short-circuit current density (J _SC ) and fill factor (FF). The improved J _SC and FF can well make up for the slight loss of open-circuit voltage (V _OC ). The optimized ternary PSCs with 20 wt% J71 in donors achieve a PCE of 14.13% and a FF of 78.4%. More than 11% PCE improvement is achieved by adopting ternary strategy on the basis of two binary PSCs with PCE over 12%, also keeping simple fabrication technology.

Original language	English
Pages (from-to)	768-774
Number of pages	7
Journal	Nano Energy
Volume	60
DOIs	https://doi.org/10.1016/j.nanoen.2019.04.018
Publication status	Published - Jun 2019
Externally published	Yes

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@article{c5c9bd2a54c54d11986519e18714c689,

title = "Ternary polymer solar cells with alloyed donor achieving 14.13% efficiency and 78.4% fill factor",

abstract = " The power conversion efficiency (PCE) reaches to 12.63% or 12.19% for polymer solar cells (PSCs) based on PM6 or J71 as donor and Br-ITIC as acceptor, respectively. A series of ternary PSCs with two donors were fabricated by combining the merits of the two binary PSCs. The PM6 and J71 prefer to form alloyed donor due to the good compatibility, which is beneficial to finely optimize photon harvesting and phase separation of ternary active layers, leading to simultaneous improvement of short-circuit current density (J SC ) and fill factor (FF). The improved J SC and FF can well make up for the slight loss of open-circuit voltage (V OC ). The optimized ternary PSCs with 20 wt% J71 in donors achieve a PCE of 14.13% and a FF of 78.4%. More than 11% PCE improvement is achieved by adopting ternary strategy on the basis of two binary PSCs with PCE over 12%, also keeping simple fabrication technology.",

author = "Qiaoshi An and Jian Wang and Fujun Zhang",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = jun,

doi = "10.1016/j.nanoen.2019.04.018",

language = "English",

volume = "60",

pages = "768--774",

journal = "Nano Energy",

issn = "2211-2855",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Ternary polymer solar cells with alloyed donor achieving 14.13% efficiency and 78.4% fill factor

AU - An, Qiaoshi

AU - Wang, Jian

AU - Zhang, Fujun

PY - 2019/6

Y1 - 2019/6

N2 - The power conversion efficiency (PCE) reaches to 12.63% or 12.19% for polymer solar cells (PSCs) based on PM6 or J71 as donor and Br-ITIC as acceptor, respectively. A series of ternary PSCs with two donors were fabricated by combining the merits of the two binary PSCs. The PM6 and J71 prefer to form alloyed donor due to the good compatibility, which is beneficial to finely optimize photon harvesting and phase separation of ternary active layers, leading to simultaneous improvement of short-circuit current density (J SC ) and fill factor (FF). The improved J SC and FF can well make up for the slight loss of open-circuit voltage (V OC ). The optimized ternary PSCs with 20 wt% J71 in donors achieve a PCE of 14.13% and a FF of 78.4%. More than 11% PCE improvement is achieved by adopting ternary strategy on the basis of two binary PSCs with PCE over 12%, also keeping simple fabrication technology.

AB - The power conversion efficiency (PCE) reaches to 12.63% or 12.19% for polymer solar cells (PSCs) based on PM6 or J71 as donor and Br-ITIC as acceptor, respectively. A series of ternary PSCs with two donors were fabricated by combining the merits of the two binary PSCs. The PM6 and J71 prefer to form alloyed donor due to the good compatibility, which is beneficial to finely optimize photon harvesting and phase separation of ternary active layers, leading to simultaneous improvement of short-circuit current density (J SC ) and fill factor (FF). The improved J SC and FF can well make up for the slight loss of open-circuit voltage (V OC ). The optimized ternary PSCs with 20 wt% J71 in donors achieve a PCE of 14.13% and a FF of 78.4%. More than 11% PCE improvement is achieved by adopting ternary strategy on the basis of two binary PSCs with PCE over 12%, also keeping simple fabrication technology.

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U2 - 10.1016/j.nanoen.2019.04.018

DO - 10.1016/j.nanoen.2019.04.018

M3 - Article

AN - SCOPUS:85064079224

SN - 2211-2855

VL - 60

SP - 768

EP - 774

JO - Nano Energy

JF - Nano Energy

ER -

Ternary polymer solar cells with alloyed donor achieving 14.13% efficiency and 78.4% fill factor

Abstract

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