Abstract
The current development of efficient solar cells based on perovskite materials as active layer promises to transform the field of thin film solar cells. A substantial progress in terms of efficiency has been achieved. However, the unstable nature of the device is a major drawback. The study of perovskite solar cells is still at dawn and considerable fundamental research is needed for commercial viability. In the present work, theoretical studies have been carried out to understand the working procedure of perovskite materials for solar cell applications. Based on the diode model, an efficiency of 11.25% is obtained for a cell with CH3NH3PbI3 as the active layer. The diode model has been employed to investigate the current density-voltage (J-V) characteristics and power-voltage (P-V) characteristics under illumination. We also analyzed the efficiency (η) variation for different values of series resistance (RS) keeping the shunt resistance (RP) constant and vice versa. From the above calculations, the fill factor (FF) of the solar cells has been deduced. It is observed that our numerical results are in good agreement with the experimental as well as theoretical results existing in literature.
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