Small molecule BHJ solar cells based on DPP(TBFu)2 and diphenylmethanofullerenes (DPM): linking morphology, transport, recombination and crystallinity

Small molecule BHJ solar cells based on DPP(TBFu)2 and diphenylmethanofullerenes (DPM): linking morphology, transport, recombination and crystallinity

The effect of alkyl chains in substituted diphenylmethano[70]fullerenes (C70-DPM) on the device characteristics of DPP(TBFu)2 small molecule-based bulk heterojunction (BHJ) organic solar cell devices is investigated. By measuring charge carrier mobilities as well as the morphology and crystallinity...

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Veröffentlicht in:Nanoscale 2014-06, Vol.6 (11), p.5871-5878
Hauptverfasser: Fernández, Daniel, Viterisi, Aurélien, Ryan, James William, Gispert-Guirado, Francesc, Vidal, Sara, Filippone, Salvatore, Martín, Nazario, Palomares, Emilio
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container_end_page 5878
container_issue 11
container_start_page 5871
container_title Nanoscale
container_volume 6
creator Fernández, Daniel
Viterisi, Aurélien
Ryan, James William
Gispert-Guirado, Francesc
Vidal, Sara
Filippone, Salvatore
Martín, Nazario
Palomares, Emilio
description The effect of alkyl chains in substituted diphenylmethano[70]fullerenes (C70-DPM) on the device characteristics of DPP(TBFu)2 small molecule-based bulk heterojunction (BHJ) organic solar cell devices is investigated. By measuring charge carrier mobilities as well as the morphology and crystallinity of each device we have been able to understand and explain the differences found between solar cells made with the different C70-DPM fullerenes despite the general lack of simple relationships between the molecular structure, orbital level positioning and power conversion efficiency. Our study then concludes with some general rules for the future design of acceptors for DPP(TBFu)2 containing photoactive layers in the search for efficient organic solar cells.
doi_str_mv 10.1039/c3nr06801c
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title Small molecule BHJ solar cells based on DPP(TBFu)2 and diphenylmethanofullerenes (DPM): linking morphology, transport, recombination and crystallinity
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