:: Volume 24 - ::
ICOP & ICPET 2018, 24 - : 261-264 Back to browse issues page
The effect of weight ratios of Conjugated Polymers in the active layer of the bulk heterojunction photovoltaic cell
Sahar Divani Khafaei * 1, Mohsen Ghasemi 1, Vishtasb Soleimanian 1
1- Department of Physics, Faculty of Sciences, Shahrekord University
Abstract:   (276 Views)
In this paper, bulk heterojunction polymer photovoltaic cells with structure of ITO/MoO3/P3HT: PCBM /BCP/LiF/Al were fabricated in different weight ratios of P3HT: PCBM. In order to investigate the effect of changing the weight ratios of these materials in the active layer; polymeric cells with active layer of P3HT:PCBM were prepared in four weights ratio of 1:1, 1:1.5, 1:0.8 and 1:0.6. The photovoltaic parameters of the cells, such as short circuit current, open circuit voltage, fill factor and power conversion efficiency, were also determined and analyzed. The results show that the cell with a 1:1 weight ratio has better performance. Finally, by using the voltage-current curve, the transport mechanisms of charge carriers in optimized cell was determined.
Keywords: Bulk heterojunction, polymeric photovoltaic cell, power conversion efficiency, charge carrier
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Type of Study: Research | Subject: Special

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