Facile in situ synthesis of double perovskite Cs2AgBiBr6/WS2 heterostructure and interfacial charge transfer mediated high-performance ultraviolet photodetection

Pb-free halide perovskites have garnered enormous attention in optoelectronics. We report a facile in-situ synthesis of double perovskite Cs 2 AgBiBr 6 /WS 2 heterostructure and study its high-performance ultraviolet photodetection in a planar geometry.