Physical Sciences and Mathematics Commons^™

Charge Transport And Recombination In Bulk Heterojunction Solar Cells Studied By The Photoinducted Charge Extraction By Linearly Increasing Voltage Technique, Attila Mozer, Serdar Sariciftci, Laurence Lutsen, Dirk Vanderzande, R Osterbacka, M Westerling, G Juska

Australian Institute for Innovative Materials - Papers

Charge carriermobility and recombination in a bulk heterojunctionsolar cell based on the mixture of poly[2-methoxy-5-(3,7-dimethyloctyloxy)-phenylene vinylene] (MDMO-PPV) and 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)-C₆₁ (PCBM) has been studied using the novel technique of photoinduced charge carrier extraction in a linearly increasing voltage (Photo-CELIV). In this technique, charge carriers are photogenerated by a short laser flash, and extracted under a reverse bias voltage ramp after an adjustable delay time (t_del). The Photo-CELIV mobility at room temperature is found to be μ = 2 × 10⁻⁴ cm² V⁻¹ s⁻¹, which is almost independent on charge carrier density, but slightly …