Heterojunction organic solar cell based on flexible substrate

Organic thin film solar cells based on flexible substrate were studied, which were prepared by using poly (3, 4-ethylenedioxythiophene): poly (4-styrenesulfonic acid) (PEDOT: PSS) as an anode modification layer, poly (2-methoxy, 5-(2-ethylhexyloxy)-1, 4-phenylene vinylene) (MEH-PPV) as a donor layer and fullerene (C60) as an acceptor layer. The results show that, the anode modification layer increases the short-circuit current density, open-circuit voltage, fill factor and power conversion efficiency of cells apparently although it may block the light absorption. The thickness of the acceptor layer also influences the cells performance. A maximum power conversion efficiency of 1.29% has been achieved by employing 90 nm-thick MEH-PPV layer.