Novel 4-terminal perovskite/SiC-based rear contact silicon tandem solar cell with 27.6 % PCE

In this work, a novel 4-terminal perovskite / SiC-based rear contact silicon tandem device has been proposed for long-term cost reduction and higher efficiency. The novel tandem device proposed in this work shows ultra-high power conversion efficiency (PCE) of 27.6 % and 22.7 % with 300 μm and 10 μm thick rear contact Si solar cell, respectively. The realistic TCAD simulation has been performed for Methylammonium lead triiodide perovskite cell. To simulate and predict the realistic behavior of the device, all the fundamental recombination mechanisms have been included in CH
₃
NH
₃
PbI
₃
film during the simulation. The perovskite device which is used as top cell shows PCE of 19.9% which is almost equivalent to experimentally available record efficiency of 20.1%. The charge carrier decay constants for CH
₃
NH
₃
PM
₃
used in the simulation have been obtained from experimentally available data.