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Citation: YU Huang-Zhong, PENG Jun-Biao. The Influence of the Solvent and the Device Structure on Performance of the MEH-PPV:PCBM Solar Cell[J]. Acta Physico-Chimica Sinica, ;2007, 23(10): 1637-1641. doi: 10.3866/PKU.WHXB20071028 shu

The Influence of the Solvent and the Device Structure on Performance of the MEH-PPV:PCBM Solar Cell

1.
Key Laboratory of Specially Functional Materials and Advanced Manufacturing Technology, Institute of Polymer Optoelectronic Materials and Devices, South China, University of Technology, Guangzhou 510640, P. R. China；School of Physics, South China, University of Technoloty, Guangzhou 510640, P. R. China

Received Date: 10 April 2007
Available Online: 12 July 2007

The various structure solar cells based on the blend of MEH-PPV(poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene) )and PCBM(1-(3-methoxycarbonyl)-propyl-1-1-phenyl-(6,6)C61) )as acceptor were fabricated. A mechanism of the influence of device structure on device performance was analyzed in detail. The result showed an increase of open circuit voltage and improvement of electric charge transport owing to the inserting of PEDOT:PSS (4083)(poly(3,4-ethylene dioxythiophene:poly(styrene sulphonic acid)). We also raised the short-circuit electric current and fill factor of device adopting LiF/Al negative electricity structure, and obtained an open circuit voltage of 0.8 V, short circuit current density of 3.40 mA·cm^-2 and fill factor of 52.1% under 100 mA·cm^-2 air-mass 1.5 solar simulator illumination, yielding a 1.43%power conversion efficiency. The influence of different solvents on device performance was studieds. The results showed that 1,2-dichlorobenzene was advantageous to the formation of od body heterojunction, and the performance of the corresponding device was excellence. We also analyzed the mechanism of the solvent influence on the device performance by light and dark I-V curve, photosensitivity, AFM, and gave some reasonable explainations.
- Solar cell; Polymer; Performance
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