Semiconducting polymers (as donors) and buckminsterfullerene (as acceptor): photoinduced electron transfer and heterojunction devices
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2018, Solar EnergyCitation Excerpt :BHPSCs are almost nano-film devices that their active layers are based on semiconductor polymers. In 1993, the first polymer heterojunction solar cell based on Poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene]/Buckminsterfullerene (MEH-PPV/C60) was made by Sariciftci et al. (1993). In this two-layer device, the heterojunction which formed at the interface of MEH-PPV as a donor and C60 as an acceptor, led to a PCE of 0.04%.
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2018, Synthetic MetalsCitation Excerpt :One key driver to improve the solar cell device performance is the morphology of the photoactive layer. Since the discovery of the BHJ concept [6], the introduction of a molecular acceptor to the donor polymer to overcome the exciton binding energy and facilitating the ultrafast electron transfer from the donor polymer to an acceptor fullerene [7], extensive studies have been conducted on optimizing the morphology of donor:acceptor blends, in addition to the ongoing developments in designing better donor and acceptor materials [8]. Intimate mixing of donor and acceptor materials leads to a large interfacial area, which can provide high charge generation rates [9].
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