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Effect of nanocrystalline domains in photovoltaic devices with benzodithiophene-based donor-acceptor copolymers

Menelaou, Christopher; Tierney, Steve; Blouin, Nicolas; Mitchell, William; Tiwana, Priti; McKerracher, Ian; Jagadish, Chennupati; Carrasco, Miguel; Herz, Laura


We have investigated the effects of thin-film morphology on the photovolatic performance for a series of donor-acceptor copolymers based on benzodithiophene donor and benzothiadiazole acceptor units. Photovoltaic devices incorporating polymer:fullerene blends show highest efficiencies (up to 6%) for those polymers exhibiting the least degree of crystallinity in X-ray diffraction patterns and a corresponding lowest surface roughness in thin films. We find that the existence of such crystalline...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Journal of Physical Chemistry C
DOI: 10.1021/jp504010x


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