Introducing 4-Methoxythiophene Side Chains into β-Functionalized Porphyrins to Enhance Their Photovoltaic Performance.

Lin Yuan, Jifa Wu, Hanping Wu, Yinchun Guo, Yumeng Li, Feng Tang, Xiaobin Peng

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Article in ChemSusChem, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Lin YuanState Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, P. R. China.

Jifa WuState Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, P. R. China.ORCID https://orcid.org/0000-0003-0370-1673

Hanping WuState Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, P. R. China.

Yinchun GuoState Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, P. R. China.

Yumeng LiState Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, P. R. China.

Feng TangInternational Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, P. R. China.

Xiaobin PengState Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, P. R. China.ORCID https://orcid.org/0000-0003-1562-3190

Funding

National Key Research and Development Program of China 2017YFA0206602National Natural Science Foundation of China 51861145301National Natural Science Foundation of China 52173162

6 · The paper itself

Abstract

Compared to the extensive studies on meso-substituted porphyrins for organic solar cells (OSCs), β-substituted porphyrins have received less attention. Recently, we developed β-functionalized porphyrins and achieved OSCs with a power conversion efficiency (PCE) of 6.96%, indicating that the functionalization at the β positions is promising for OSCs. Considering that side-chain engineering plays important roles in developing high-efficient photovoltaic materials and 4-methoxy-modified thiophene group is frequently employed as the side chains in polymer donors to enhance the photovoltaic performance, here in, we introduced 4-methoxythiophene with 2-ethylhexyl (EH) and 2-hexyldecyl (HD) at two of the meso positions, connected diketopyrrolopyrrole (DPP) units directly to four of the β positions of a porphyrin core, and synthesized two small molecular donors 4β-DPP-MOT(EH)-Por and 4β-DPP-MOT(HD)-Por, respectively. Compared with the porphyrins with alkyl side chains reported previously, the introduction of 4-methoxythiophene side chains improves the intermolecular interactions. Especially, 4β-DPP-MOT(EH)-Por:Y6 blend afforded a more favorable morphology, which facilitates efficient charge transport and inhibits charge recombination. Consequently, the 4β-DPP-MOT(EH)-Por:Y6-based OSCs exhibited a champion PCE of 9.18%, higher than that of the 4β-DPP-MOT(HD)-Por-based device (8.14%). These studies demonstrated the potentials of developing highly efficient small-molecule donor materials by side-chain engineering to optimize the morphology of the blend films.

Indexed as

4‐methoxythiophene side chains modificationall‐small‐molecule organic solar cellsenhance intermolecular interactionsβ‐substituted porphyrin

Identifiers

PMID42438372

DOI10.1002/cssc.70893

PMCPMC13358423

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