PDI-based heteroacenes as acceptors for fullerene-free solar cells: Importance of their twisted geometry

Huaqing Chen; Ling Wang; Hua Sun; Qian Liu; Xiao Tan; Shenglong Sang; Bo Wu; Cong Zhang; Fei Chen; Xiao Chun Hang; Zhi Kuan Chen

doi:10.1039/d0nj01733g

PDI-based heteroacenes as acceptors for fullerene-free solar cells: Importance of their twisted geometry

Huaqing Chen, Ling Wang, Hua Sun, Qian Liu, Xiao Tan, Shenglong Sang, Bo Wu, Cong Zhang, Fei Chen, Xiao Chun Hang, Zhi Kuan Chen

Research output: Journal Publication › Article › peer-review

5 Citations (Scopus)

Abstract

Two perylenediimide (PDI) derivatives (FP4TT2T and FP43T) with extended conjugation have been successfully synthesized. Due to their long fused D-A (D: donor and A: acceptor) molecular structures, PDI-based heteroacenes have rigid backbones and exhibit strong light absorption in the 300-600 nm range. With the contribution from the PDI moiety with strong electron affinity, the molecules possess low energy levels of LUMOs (ca. -3.7 eV), fitting well as acceptors for fullerene-free organic solar cells (OSCs). OSC devices containing FP4TT2T and FP43T were fabricated and fully characterized. It is found that the geometric twist in PDI-based heteroacenes as acceptors could enhance the performance of OSC devices. OSCs based on FP43T with a more twisted geometry achieved a power conversion efficiency of 6.05%, which is higher than those based on the FP4TT2T counterpart.

Original language	English
Pages (from-to)	13093-13099
Number of pages	7
Journal	New Journal of Chemistry
Volume	44
Issue number	30
DOIs	https://doi.org/10.1039/d0nj01733g
Publication status	Published - 14 Aug 2020

ASJC Scopus subject areas

Catalysis
General Chemistry
Materials Chemistry

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title = "PDI-based heteroacenes as acceptors for fullerene-free solar cells: Importance of their twisted geometry",

abstract = "Two perylenediimide (PDI) derivatives (FP4TT2T and FP43T) with extended conjugation have been successfully synthesized. Due to their long fused D-A (D: donor and A: acceptor) molecular structures, PDI-based heteroacenes have rigid backbones and exhibit strong light absorption in the 300-600 nm range. With the contribution from the PDI moiety with strong electron affinity, the molecules possess low energy levels of LUMOs (ca. -3.7 eV), fitting well as acceptors for fullerene-free organic solar cells (OSCs). OSC devices containing FP4TT2T and FP43T were fabricated and fully characterized. It is found that the geometric twist in PDI-based heteroacenes as acceptors could enhance the performance of OSC devices. OSCs based on FP43T with a more twisted geometry achieved a power conversion efficiency of 6.05%, which is higher than those based on the FP4TT2T counterpart.",

author = "Huaqing Chen and Ling Wang and Hua Sun and Qian Liu and Xiao Tan and Shenglong Sang and Bo Wu and Cong Zhang and Fei Chen and Hang, {Xiao Chun} and Chen, {Zhi Kuan}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.",

year = "2020",

month = aug,

day = "14",

doi = "10.1039/d0nj01733g",

language = "English",

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journal = "New Journal of Chemistry",

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T1 - PDI-based heteroacenes as acceptors for fullerene-free solar cells

T2 - Importance of their twisted geometry

AU - Chen, Huaqing

AU - Wang, Ling

AU - Sun, Hua

AU - Liu, Qian

AU - Tan, Xiao

AU - Sang, Shenglong

AU - Wu, Bo

AU - Zhang, Cong

AU - Chen, Fei

AU - Hang, Xiao Chun

AU - Chen, Zhi Kuan

PY - 2020/8/14

Y1 - 2020/8/14

N2 - Two perylenediimide (PDI) derivatives (FP4TT2T and FP43T) with extended conjugation have been successfully synthesized. Due to their long fused D-A (D: donor and A: acceptor) molecular structures, PDI-based heteroacenes have rigid backbones and exhibit strong light absorption in the 300-600 nm range. With the contribution from the PDI moiety with strong electron affinity, the molecules possess low energy levels of LUMOs (ca. -3.7 eV), fitting well as acceptors for fullerene-free organic solar cells (OSCs). OSC devices containing FP4TT2T and FP43T were fabricated and fully characterized. It is found that the geometric twist in PDI-based heteroacenes as acceptors could enhance the performance of OSC devices. OSCs based on FP43T with a more twisted geometry achieved a power conversion efficiency of 6.05%, which is higher than those based on the FP4TT2T counterpart.

AB - Two perylenediimide (PDI) derivatives (FP4TT2T and FP43T) with extended conjugation have been successfully synthesized. Due to their long fused D-A (D: donor and A: acceptor) molecular structures, PDI-based heteroacenes have rigid backbones and exhibit strong light absorption in the 300-600 nm range. With the contribution from the PDI moiety with strong electron affinity, the molecules possess low energy levels of LUMOs (ca. -3.7 eV), fitting well as acceptors for fullerene-free organic solar cells (OSCs). OSC devices containing FP4TT2T and FP43T were fabricated and fully characterized. It is found that the geometric twist in PDI-based heteroacenes as acceptors could enhance the performance of OSC devices. OSCs based on FP43T with a more twisted geometry achieved a power conversion efficiency of 6.05%, which is higher than those based on the FP4TT2T counterpart.

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U2 - 10.1039/d0nj01733g

DO - 10.1039/d0nj01733g

M3 - Article

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SN - 1144-0546

VL - 44

SP - 13093

EP - 13099

JO - New Journal of Chemistry

JF - New Journal of Chemistry

IS - 30

ER -

PDI-based heteroacenes as acceptors for fullerene-free solar cells: Importance of their twisted geometry

Abstract

ASJC Scopus subject areas

UN SDGs

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