Optoelectronic properties and interfacial interactions of two-dimensional Cs2PbX4–MSe2 (M = Mo, W) heterostructures

The PCE of Cs 2 PbX 4 –WSe 2 heterostructures is larger than the PCE of Cs 2 PbX 4 –MoSe 2 heterostructures. Cs 2 PbI 4 –WSe 2 heterostructure has the largest PCE (18%) among Cs 2 PbX 4 –MSe 2 heterostructures and has great potential application in solar cells.