'Geophysical Center of the Russian Academy of Sciences'
Doi
Abstract
Here, the effect of lightly Niobium doped TiO layer on the performance of perovskite solar cells has been studied by using solar cell capacitance simulator (SCAPS). N addition, the effects of Niobium concentration, buffer film thickness and operating temperature on the performance of the perovskite solar cell are investigated. For doping level of 3.0 mol% into the TiO layer, cell efficiency of 18.26% with V of 0.96 V, Jsc of 22.45 mA/ cm and FF of 84.25% has been achieved. Calculations show that thickness widening of Nb-doped TiO layer would decrease the efficiency and Voc of the cells. Increase in operating temperature from 300 k to 400 k would weaken the performance of the perovskite solar cell with both pure and Nb-doped TiO layers. However, the cell with Nb-doped TiO layer shows higher stability than the cell with pure TiO buffer at higher temperatures