Performance and lifetime improvement of polymer/fullerene blend photovoltaic cells with a C60 interlayer |
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| Affiliation: | 1. Institute of Polymer Optoelectronic Materials and Devices, Key Lab of Specially Functional Materials, South China University of Technology, Guangzhou 510640, China;2. School of Physics, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Polymer solar cell based on the blend of poly2-methoxy-5-(2′-ethylhexoxy)-1,4-phenylene vinylene] (MEH-PPV) and 6,6]-phenyl C61-butyric acid methyl ester (PCBM) with C60 insertion layer were fabricated. The solar cell structure was ITO/poly(3,4-ethylenedioxythiopene) (PEDOT):poly(styrenesulfonate) (PSS)/MEH-PPV:PCBM/C60/Al. It was found that the C60 inserting layer could increase the device performance and lifetime. The energy conversion efficiency (ECE) of the solar cell with C60 layer reached about 1.89% under Air Mass 1.5, 100 mW cm?2 illumination, which is enhanced in comparison with that of the device without C60 layer. Mechanisms of the solar cell performance and lifetime dependence on the C60 layer are discussed. |
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