Numerical Simulation of CeOx ETL based Perovskite Solar Cell:- An Optimization Study for High Efficiency and Stability

In recent years, research and development of high-efficiency perovskite solar cells (PSCs)have gained momentum. However, the inherent issues of high-temperature stability and hysteresis have constrained the device from commercial feasibility. Researchers have proposed different electron transport layer (ETL)based PSCs to minimize the aforesaid issues. In the recent research, CeO
_x
/PCBM ETL based PSC device has been developed with power conversion efficiency (PCE)of 16.85% and improved stability. In the present work, the above-mentioned device has been simulated and calibrated using the SCAPS 1D simulator to provide the scope for further improvement in terms of the overall conversion efficiency of the device. Moreover, the device is optimized by parametric variation such as doping and thickness of CeO
_x
and PCBM ETL layers. The PCE has significantly improved to 18.36% with variation in thickness of CeO
_x
/PCBM in the range of 60 nm to 120 nm/50 nm to 10 nm respectively whereas doping density of CeO
_x
has been varied from 1×10
¹⁵
cm
³
to 5×10
¹⁸
cm
^-3
.