Transport and recombination dynamics studies of polymer/fullerene based solar cells |
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| Authors: | S.A. Choulis J. Nelson S.M. Tuladhar S. Cook Y. Kim J.R. Durrant D.D.C. Bradley |
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| Affiliation: | Centre for Electronic Materials and Devices, Departments of Physics and Chemistry, Imperial College, London SW7 2AY,UK |
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| Abstract: | We have studied the electron/hole transport and recombination dynamics in blends of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylene vinylene], (MDMO-PPV) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) at room temperature, as a function of laser excitation density and PCBM concentration. The experimental results of these studies indicate the important role played by hole-trap states in MDMO-PPV. Electron and hole transport are not balanced within the blend. PCBM is a less disordered material than MDMO-PPV and electron transport dominates the response of the solar cell device. |
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| Keywords: | blends MDMO-PPV PCBM recombination dynamics solar cells transport trap-states |
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