Numerical simulation of a hybrid aSi:H/CH3NH3PbI3 heterojunction solar cell

Perovskite solar cells (PSCs) have attracted great attention as low-cost and high-power conversion efficiency (PCE) emerging devices. Usually, the PSCs consists of a three-layer n-i-p structure, where the i layer corresponds to a perovskite and the n and p layers to n-type and p-type semiconductors, respectively. Toward a higher solar cell cost reduction, in this work a bilayer perovskite p-n solar cell configuration using aSi:H (p) is proposed. The functionality of the proposed device is demonstrated by employing numerical simulations. The optimal thickness of Perovskite (CH3NH3PbI3) to obtain the maximum solar cell efficiency is also determined. Finally, we analyze the effect of the density of trap states in the perovskite on the device’s open-circuit voltage.