Enhancing photovoltaic efficiency in BDTF-based donor polymer solar cells: insights from structural modifications

Polymer solar cells (PSCs) have gained attention for their flexibility, low cost, lightweight properties, and suitability for large-scale production of renewable energy. Typically, PSCs utilize bulk heterojunction (BHJ) active layers composed of blended electron donor and acceptor materials. Improvi...

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Published inMolecular Crystals and Liquid Crystals Vol. 769; no. 2; pp. 277 - 295
Main Authors Nisa, Qurrotun Ayuni Khoirun, Son, Dong Hwan, Shon, Young-Seok, Park, Joon-Seo, Kim, Joo Hyun
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 22.01.2025
Taylor & Francis Ltd
Subjects
acceptor
Acceptor materials
Alternative energy
benzodithiophene
Design optimization
Donor materials
Electron affinity
Heterojunctions
Molecular chains
Optoelectronic devices
Photovoltaic cells
Photovoltaics
polymer solar cell
Polymers
Renewable energy
Solar cells
thiophene-dione
Zinc oxide
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Summary:Polymer solar cells (PSCs) have gained attention for their flexibility, low cost, lightweight properties, and suitability for large-scale production of renewable energy. Typically, PSCs utilize bulk heterojunction (BHJ) active layers composed of blended electron donor and acceptor materials. Improving the efficiency of PSCs involves developing new donor polymers through precise monomer design and optimizing side-chain engineering to enhance properties such as solubility, molecular packing, and electron affinity. Fluorinated benzodithiophene (BDTF) and thiophene-dione-based acceptor units have demonstrated exceptional performance in non-fullerene PSCs with Y6BO as the acceptor. This study focuses on incorporating a linear alkyl chain, 5-((4,5-dioctylthiophen-2-yl)methylene)-4H-cyclopenta[c]thiophene-4,6(5H)-dione (TIND-DOT), into BDTF-based polymers to evaluate their photovoltaic properties using devices structured as ITO/ZnO/TIND-DOT-BDTF:Y6BO/MoO 3 /Ag giving maximum PCE of 6.55%. The research explores D-A combinations to assess their impact on optoelectronic and photovoltaic performance, highlighting the potential of modifying thiophene-dione core units as acceptors in promising donor materials for advancing PSCs.
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ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2025.2454723