Performance analysis of highly efficient 2D/3D bilayer inverted perovskite solar cells

Photovoltaic conversion efficiency (PCE) acquired in perovskite solar cells (PSCs) is currently competitive with that of other commercial solar cells. Despite profound progress in PSCs in the last few years, achieving long term stability is considered as a prime hindrance for the commercialization of these solar cells. Recently, low dimensional perovskites have drawn extensive interests in research to improve photo-stability, however, wide bandgap limits output power of low dimensional perovskite-based solar cells. Two-dimensional/three-dimensional (2D/3D) bilayer PSCs can overcome this barrier via innovation in device engineering that can retain high performance and long-term photostability simultaneously. For example, inverted p-i-n structure of 2D/3D bilayer PSCs has drawn enormous interests in recent years due to cost-effectiveness, low temperature processing, and inhibited hysteresis characteristics.…