期刊名称：Journal of Pure and Applied Science and Technology
印刷版ISSN：2231-4202
电子版ISSN：2249-9970
出版年度：2017
卷号：2017
页码：1-9
语种：English
出版社：Natthan Lal Sevarth Samiti
摘要：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.
