Double perovskite Cs4CuSb2Cl12 microcrystalline device for cost effective photodetector applications

Abstract Recently reported double perovskites (DPs), Cs4CuSb2Cl12 has led to the development of a new lead free perovskite. It is 1 eV band gap material. The perovskite microcrystals were synthesized via liquid phase method. This was investigated as active solar energy materials for visible-light photodetector. The microcrystalline device was made in a single-step printable Cs4CuSb2Cl12/carbon materials composite paste. 10 wt% active material composite was found to be the best candidate for the highest responsivity, 10 - 3  A/W and detectivity, 10 8  J. One-step printing of the composite paste can be used for cost effective photodetector applications.