Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 1, Issue 44, Pages 7266-7293Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3tc31235f
Keywords
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Funding
- EPSRC [EP/I028641/1]
- King Abdulaziz University [D-004/431]
- [EP/J017361/1]
- Engineering and Physical Sciences Research Council [EP/I028641/1] Funding Source: researchfish
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We review recent progress in the development of organic bulk heterojunction (BHJ) solar cells employing donor-acceptor copolymers as the electron-donor and fullerene derivatives as the electron-acceptor. We discuss the role of the donor and acceptor moieties, side-chains, bridging units and atomic substitutions of the copolymers on their optoelectronic functionality. The physical properties, e. g. molecular conformation, miscibility, phase-separated lateral and vertical morphology, of various photovoltaic blends prepared via solution casting and post-treatments are reviewed and correlated with photovoltaic device performance. Factors influencing the morphological stability of polymer: fullerene BHJ thin-films are briefly discussed. Finally, we address the use of thin organic interlayers to increase the efficiency of BHJ solar cells.
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