Lessons learnt with donor:acceptor photovoltaic blends: can they be applied to doped polymer systems?

Natalie Stingelin

doi:10.1117/12.2596112

5 August 2021 Lessons learnt with donor:acceptor photovoltaic blends: can they be applied to doped polymer systems?

Natalie Stingelin

Proceedings Volume 11799, Physical Chemistry of Semiconductor Materials and Interfaces XX; 1179916 (2021) https://doi.org/10.1117/12.2596112
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

The question of how free charges are generated in donor:acceptor blends requires consideration that they are typically comprised of a complex phase morphology where intermixed and relatively phase-pure domains of the donor and acceptor co-exist. The local arrangement of the donor and acceptor plays thereby a decisive role in the fate of photogenerated electron-hole pairs –whether they dissociate to free charges or geminately recombine– as we demonstrate on a series of donor polymer:fullerenes binaries by combining 2D-NMR, time-resolved ultra-fast spectroscopy and detailed structural data. Our insights are important as similar considerations apply to other blends, such as semiconductor:dopant binaries that lead to highly conductive systems. We discuss how the spatial arrangement affects charge transport, and provide a tentative picture of the complex correlation of structure and electronic landscape towards the understanding of organic photovoltaics and doped, conducting plastics.

Conference Presentation

Citation Download Citation

Natalie Stingelin "Lessons learnt with donor:acceptor photovoltaic blends: can they be applied to doped polymer systems?", Proc. SPIE 11799, Physical Chemistry of Semiconductor Materials and Interfaces XX, 1179916 (5 August 2021); https://doi.org/10.1117/12.2596112

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