Light-induced X,W-band Electron Spin Resonance study of double-crystalline donor-acceptor P3HT-b-PPerAcr block copolymers in solid thin films

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Konkin, A. ; Singh, Chetan R. ; Orlinskii, S. ; Mamin, G. ; Aganov, A. ; Lohwasser, Ruth H. ; Ritter, U. ; Scharff, P. ; Thelakkat, Mukundan ; Hoppe, Harald:
Light-induced X,W-band Electron Spin Resonance study of double-crystalline donor-acceptor P3HT-b-PPerAcr block copolymers in solid thin films.
In: Synthetic Metals. Bd. 215 (2016) . - S. 251-259.
ISSN 0379-6779
DOI: https://doi.org/10.1016/j.synthmet.2016.02.002

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Abstract

Abstract Light-induced X,W-band Electron Spin Resonance (LESR) study of double-crystalline donor-acceptor block copolymers (BCPs) comprised of poly-3-hexylthiophene as the donor and poly-perylene bisimide acrylate as the acceptor segments is presented. It is suggested that, while the intrinsic light-induced charge separation efficiency in the {BCPs} registered by {LESR} could be more efficient than in bulk heterojunction solar cells based on the P3HT/PCBM blends, the photovoltaic performance of the {BCPs} is limited significantly by the incorrect orientation of crystalline π-stack morphology of (poly-perylene bisimide acrylate) domains.