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Reversible photoinduced bi-state polymer solar cells based on fullerene derivatives with azobenzene groups

Citation:

Ma S, Ting H, Zhang L, Ma Y, Zheng L, Xiao L, Chen Z. Reversible photoinduced bi-state polymer solar cells based on fullerene derivatives with azobenzene groups. ORGANIC ELECTRONICS. 2015;23:1-4.

摘要:

[6,6]-Phenyl-C61-butyric acid-4'-hydroxyl-azobenzene ester (PCBAb) was synthesized and used as the acceptor in the fabrication of reversible UV-VIS response bi-state polymer solar cells (PSCs) based on the photoinduced cis-trans isomerization of PCBAb. The device can be switched between ``active'' and ``sleep'' by the irradiation of UV and visible light, respectively. The active device has a PCE of 2.0%. With UV irradiation, the device goes to ``sleep'' with a lowered PCE (0.4%), and simultaneously decreased J(sc), V-oc and FF, while after visible light treatment, the device is made ``active'' again. The mechanism of the bi-state process involves the different electron mobilities of the isomers. (C) 2015 Elsevier B.V. All rights reserved.