Investigation of isomerization effects on the photovoltaic performance of fused-ring electron acceptors via side-chain position manipulation

Investigation of isomerization effects on the photovoltaic performance of fused-ring electron acceptors via side-chain position manipulation

Three FREA isomers, IUIC-in, IUIC-mid and IUIC-out, were developed to investigate the effects of side-chain position on molecular properties and photovoltaic performance. Among them, IUIC-mid based devices exhibit the lowest trap density and finest phase separation, contributing to the highest mobil...

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Veröffentlicht in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2023-02, Vol.11 (6), p.2063-2068
Hauptverfasser: Wang, Ke, He, Dan, Jiang, Li, Wang, Chunru, Zhao, Fuwen
Format: Artikel
Sprache:eng
Schlagworte:
Chains
Excitons
Isomerization
Molecular chains
Phase separation
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Zusammenfassung:Three FREA isomers, IUIC-in, IUIC-mid and IUIC-out, were developed to investigate the effects of side-chain position on molecular properties and photovoltaic performance. Among them, IUIC-mid based devices exhibit the lowest trap density and finest phase separation, contributing to the highest mobilities, weakest charge recombination and most efficient exciton dissociation. Therefore, the IUIC-mid based OSC gains the highest PCE of 13.1%.
ISSN:2050-7526
2050-7534
DOI:10.1039/D2TC05281D