Green-Solvent-Processed All-Polymer Solar Cells with Enhanced Efficiency and Stability through Molecular Design and Side-Chain Engineering DOI

Changhao Xiang,

Jiaxun Peng,

Danyang Wu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Green-solvent-processed all-polymer solar cells (AP-SCs) are regarded as an excellent candidate for renewable energy due to their better stability and eco-friendly features. Two polymers, PYF-U PYF-BO, have been designed by introducing a Y-series derivative with difluoro-substituted dicyanindenone units difluorobenzotriazole the first second electron-deficient (A) units, respectively. The introduction of two additional F atoms on leads more coplanar backbone because noncovalent interactions. Compared polymer undecyl chains thiophene, PYF-BO 2-butyloctyl exhibits stronger intermolecular aggregation during film-forming process, dominant face-on molecular packing, higher crystallinity in films. Therefore, PM6:PYF-BO AP-SC achieves efficiency 15.38%, outperforming that PM6:PYF-U device (14.27%). Moreover, former longer T80 lifetime (1789 h) than latter (826 under thermal aging at 65 °C packing morphology. Our research demonstrates combining interactions enhance coplanarity polymeric side-chain engineering optimize blend-film morphology is one efficient strategies developing high-performance acceptors.

Language: Английский

Green-Solvent-Processed All-Polymer Solar Cells with Enhanced Efficiency and Stability through Molecular Design and Side-Chain Engineering DOI

Changhao Xiang,

Jiaxun Peng,

Danyang Wu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Green-solvent-processed all-polymer solar cells (AP-SCs) are regarded as an excellent candidate for renewable energy due to their better stability and eco-friendly features. Two polymers, PYF-U PYF-BO, have been designed by introducing a Y-series derivative with difluoro-substituted dicyanindenone units difluorobenzotriazole the first second electron-deficient (A) units, respectively. The introduction of two additional F atoms on leads more coplanar backbone because noncovalent interactions. Compared polymer undecyl chains thiophene, PYF-BO 2-butyloctyl exhibits stronger intermolecular aggregation during film-forming process, dominant face-on molecular packing, higher crystallinity in films. Therefore, PM6:PYF-BO AP-SC achieves efficiency 15.38%, outperforming that PM6:PYF-U device (14.27%). Moreover, former longer T80 lifetime (1789 h) than latter (826 under thermal aging at 65 °C packing morphology. Our research demonstrates combining interactions enhance coplanarity polymeric side-chain engineering optimize blend-film morphology is one efficient strategies developing high-performance acceptors.

Language: Английский

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