Lead free perovskite materials for short wave IR devices

摘要

Problem to be solved: to provide a low cost and environmentally friendly lead free shortwave IR material having a specific absorbance from visible to shortwave IR (SWIR) and a method for fabricating a shortwave IR device.A lead free perovskite material having general formula A3 + B + C + xyz3;A3 + Z3A3 +First trivalent metal cationsZ33 first univalent anions andIncludingThe first compound isB + yB +A second monovalent metal cationYWith a second Hitachi anionIncludingThe second compound isC + XC +The third monovalent metal cationXWith a third valent anionIncludingThe third compound isThe first compound andThe second compound andThe molar ratio to the third compound isAbout 1:1: 2Lead free perovskite material.Diagram