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Molecular Crystals and Liquid Crystals Volume 743, 2022 - Issue 1
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LOW-DIMENSIONAL SOLIDS AND MOLECULAR CRYSTALS

Benzotriazole-based a conjugated polymer with siloxane-functionalized side chains for non-fullerene organic solar cells

Hyungjin Parka Department of Chemistry Education, Graduate Department of Chemical Materials, Institute for Plastic Information and Energy Materials and Sustainable Utilization of Photovoltaic Energy Research Center, Pusan National University, Busan, Republic of KoreaView further author information
,
Thavamani Gokulnatha Department of Chemistry Education, Graduate Department of Chemical Materials, Institute for Plastic Information and Energy Materials and Sustainable Utilization of Photovoltaic Energy Research Center, Pusan National University, Busan, Republic of KoreaView further author information
,
Hyerin Kima Department of Chemistry Education, Graduate Department of Chemical Materials, Institute for Plastic Information and Energy Materials and Sustainable Utilization of Photovoltaic Energy Research Center, Pusan National University, Busan, Republic of KoreaView further author information
,
Jeonghyeon Kima Department of Chemistry Education, Graduate Department of Chemical Materials, Institute for Plastic Information and Energy Materials and Sustainable Utilization of Photovoltaic Energy Research Center, Pusan National University, Busan, Republic of KoreaView further author information
,
Yeong-Soon Galb Department of Fire Safety, Kyungil University, Gyeongsan, Republic of KoreaView further author information
&
Sung-Ho Jina Department of Chemistry Education, Graduate Department of Chemical Materials, Institute for Plastic Information and Energy Materials and Sustainable Utilization of Photovoltaic Energy Research Center, Pusan National University, Busan, Republic of KoreaCorrespondence[email protected]
View further author information
Pages 43-57 | Published online: 12 Apr 2022
 
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Abstract

A new benzotriazole based π-conjugated polymer (Nap-UD-SiBTA) with siloxane-functionalized side chains is designed and synthesized for fabrication of non-fullerene organic solar cells (NFOSCs). The application of Nap-UD-SiBTA enhanced charge carrier mobility, good solubility and better surface morphology. The Nap-UD-SiBTA was synthesized by Stille polymerization and showed good compatibility with ITIC as non-fullerene acceptor. Therefore, Nap-UD-SiBTA blended with ITIC exhibited an efficiency of 4.76%, open-circuit voltage (Voc) of 0.77 V, a short-circuit current density (Jsc) of 11.60 mA/cm2, and fill factor (FF) of 53.18%, respectively. The study results provide a pacesetting strategy to design and fabricate the highly efficient NFOSCs.

Additional information

Funding

This work was supported by a grant fund from the National Research Foundation (NRF- NRF-2018R1A5A1025594) by the Ministry of Science, ICT of Korea.

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