Efficient design of perovskite solar cell using mixed halide and copper oxide

Abstract

Solar cells based on perovskites have emerged as a transpiring technology in the field of photovoltaic. These cells exhibit high power conversion efficiency. The perovskite material is observed to have good absorption in the entire visible spectrum which can be well illustrated by the quantum efficiency curve. In this paper, theoretical analysis has been done through device simulation for designing solar cell based on mixed halide perovskite. Various parameters have efficacy on the solar cell efficiency such as defect density, layer thickness, doping concentration, band offsets, etc. The use of copper oxide as the hole transport material has been analyzed. The analysis divulges that due to its mobility of charge carriers, it can be used as an alternative to spiro-OMeTAD. With the help of simulations, reasonable materials have been employed for the optimal design of solar cell based on perovskite material. With the integration of copper oxide into the solar cell structure, the results obtained are competent enough. The simulations have shown that with the use of copper oxide as hole transport material with mixed halide perovskite as absorber, the power conversion efficiency has improved by 6%. The open circuit voltage has shown an increase of 0.09 V, short circuit current density has increased by 2.32 mA/cm 2 , and improvement in fill factor is 8.75%.

Effect of carrier mobility on performance of perovskite solar cells

“…Getting a long diffusion length by improving perovskite process can enhance cell efficiency. [16] Diffusion length L of single CH 3 NH 3 PbI 3 crystal has reached 175 µm. [44] Now, a question arises: can the longer L achieve the better performance of the PSCs?…”

“…Simulation studies based on one-dimensional simulation software SCAPS show that the diffusion length longer than 1 µm and higher mobility of the carriers have no positive effect on the cell performance promotion, [13,15] and high mobility of the charge transport layer is also necessary for the high efficiency. [16,17] The influence of carrier mobility on the cell performance is restricted by other cell parameters, such as doping concentration, layer thickness, etc. In these papers, these factors were not considered as a whole.…”