High Performance UV Vis Photodetectors Based on a Lead Free Hybrid Perovskite Crystal (MV)[SbI3Cl2]
Low dimensional lead free organic inorganic hybrid perovskites have gained increasing attention as having low toxicity, ease of processing, and good optoelectronic properties. Seeking for lead free and narrow band gap organic inorganic hybrid perovskites are of great importance for the development and application of photoelectric materials. Here, we reported a Sb based organic inorganic hybrid perovskite (MV)[SbI3Cl2] which has one dimensional inorganic frameworks of the I sharing double octahedra. (MV)[SbI3Cl2] shows a narrow direct band gap of 1.5 eV, and displays obvious photoresponse for the 532 nm light with rapid response speed of trise 0.69 s, tdecay 0.28 s. With an illumination power of 5 mW and a 50 V bias, the responsivities (R) and external quantum efficiency (EQE) for (MV)[SbI3Cl2] photodetector under 532 nm laser are 29.75 mA/W and 6.69% respectively. This Sb based halide double perovskite material will provide an alternative material for photodetector devices.
Inorganic chemistry