Thienoquinolinone-based acceptor-[pi]-acceptor-type building block for polymer donors in organic solar cells

Thienoquinolinone-based acceptor-[pi]-acceptor-type building block for polymer donors in organic solar cells

Thienoquinolinone (TQO) is a promising electron-accepting building block for donor-acceptor-type semiconducting copolymers in organic photovoltaic cells. Polymer donors comprising TQO and benzodithiophene (BDT) exhibited relatively wide bandgaps and deep frontier molecular orbital energy levels. In...

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Veröffentlicht in:Macromolecular research 2023-01, Vol.31 (1), p.25
Hauptverfasser: Ha, Jong-Woon, Jung, Jae Gyeong, Ryu, Du Hyeon, Lee, Suha, Song, Chang Eun, Lim, Bogyu, Jung, Yu Jin
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Comparative analysis
Polymerization
Solar energy industry
Thiophene
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container_issue 1
container_start_page 25
container_title Macromolecular research
container_volume 31
creator Ha, Jong-Woon
Jung, Jae Gyeong
Ryu, Du Hyeon
Lee, Suha
Song, Chang Eun
Lim, Bogyu
Jung, Yu Jin
description Thienoquinolinone (TQO) is a promising electron-accepting building block for donor-acceptor-type semiconducting copolymers in organic photovoltaic cells. Polymer donors comprising TQO and benzodithiophene (BDT) exhibited relatively wide bandgaps and deep frontier molecular orbital energy levels. In this study, a new TQO-based electron-accepting building block (BTQ), comprising two TQO units with a thiophene [pi]-bridge, was designed and synthesized to induce broad absorption. Two copolymers were synthesized by Stille coupling polymerization: one comprising BDT and BTQ (PBDT-BTQ) and the other comprising fluorine-substituted BDT and BTQ (PFBDT-BTQ). These polymers showed red-shifted absorption compared to the corresponding TQO-based copolymer (PBDT-TQO) owing to extended [pi]-conjugation. Organic photovoltaic cells based on copolymer: IT-4F were fabricated and characterized. The fabricated devices showed a maximum power conversion efficiency of 8.55%. Graphical abstract
doi_str_mv 10.1007/s13233-023-00112-1
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Polymer donors comprising TQO and benzodithiophene (BDT) exhibited relatively wide bandgaps and deep frontier molecular orbital energy levels. In this study, a new TQO-based electron-accepting building block (BTQ), comprising two TQO units with a thiophene [pi]-bridge, was designed and synthesized to induce broad absorption. Two copolymers were synthesized by Stille coupling polymerization: one comprising BDT and BTQ (PBDT-BTQ) and the other comprising fluorine-substituted BDT and BTQ (PFBDT-BTQ). These polymers showed red-shifted absorption compared to the corresponding TQO-based copolymer (PBDT-TQO) owing to extended [pi]-conjugation. Organic photovoltaic cells based on copolymer: IT-4F were fabricated and characterized. The fabricated devices showed a maximum power conversion efficiency of 8.55%. 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subjects Comparative analysis
Polymerization
Solar energy industry
Thiophene
title Thienoquinolinone-based acceptor-[pi]-acceptor-type building block for polymer donors in organic solar cells
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