ISSN
2231–4202  (Print)                
2249–9970  (Online)             


JPAST is biannual multidisciplinary journal starting from July 2011. Articles are invited for July 20 issue.
Temperature Effect on the Performance of H2Pc/C60 Photovoltaic Device – Dr. Hemant Kumar.

Temperature Effect on the Performance of H2Pc/C60 Photovoltaic Device

Dr. Hemant Kumar

Government Degree College, Kasganj, UP, India.

drhemantgdc@gmail.com

 


We present the investigations carried out on the effect of temperature on the performance of hydrogen phthalocyanine (H2Pc)/fullerene (C60) bilayer organic photovoltaic (OPV) devices. Prior to these investigations the thicknesses of the active layers were optimised to get the best performance. The optimised device had an efficiency of ~0.5% at 307 oK. The investigations on the best device showed that temperature has significant effect on the photovoltaic performance. Short circuit current density (Jsc) and fill factor (FF) decrease while open circuit voltage (Voc) increases with reduction in temperature. In overall the efficiency first increases and then decreases with reduction in temperature. The reduction in Jsc and FF is because of the temperature dependent electronic properties of the organic materials. We have developed a model which shows that the built in voltage (Vbi) of the devices increases with reduction in temperature. The increment in Voc with reduction in temperature has been attributed to the increment in Vbi.

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