Journal of Photopolymer Science and Technology
Online ISSN : 1349-6336
Print ISSN : 0914-9244
Bulk-Heterojunction Organic Solar Cells Based on Benzobisthiadiazole Semiconducting Polymers
Yang WangMichael F. G. KleinJunya HiyoshiSusumu KawauchiWallace W. H. WongTsuyoshi Michinobu
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2015 Volume 28 Issue 3 Pages 385-391

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Abstract

Benzobisthiadiazole (BBT)-containing donor-acceptor polymers were investigated as semiconductors in bulk-heterojunction organic solar cells. Taking advantage of the polarity change of the BBT-based copolymers in terms of comonomer structures, they were examined as both p-type and n-type semiconductors. In the case of n-type semiconductors, fullerene-free organic solar cells were fabricated. A power conversion efficiency (PCE) of 0.02% was achieved when fluorenyl hexa-peri-hexabenzocoronene (FHBC) was employed as a p-type semiconductor. The limited performance might be due to the strong intermolecular π-π stacking of BBT-based copolymers, resulting in the poor miscibility between the donor molecule and acceptor polymer.

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© 2015 The Society of Photopolymer Science and Technology (SPST)
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