Heat saves the day: A novel analysis of diode parameters of P3HT:PCBM Organic Photovoltaics

Current-voltage (JV) analysis of poly (3-hexlythiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) organic photovoltaics (OPV) yield valuable insight into the internal physics of devices. A simple lumped circuit model, previously used to analyze conventional thin film photovoltaics and more recently applied to OPV has been used to study annealing parameters. A study of annealing P3HT:PCBM blend OPVs was carried out and the data was analyzed using the lumped circuit model. Limiting carrier lifetime-mobility product information and barrier data were extracted from the JV analysis of these devices. Collection loss characteristics were also obtained. The OPV community will benefit from applying this simple model as a method of standardizing measurements from JV curves, as was done routinely with inorganic PV.