All-inorganic perovskite material for short wavelength IR devices

摘要

PROBLEM TO BE SOLVED: To produce an all-inorganic perovskite for a short wavelength IR (SWIR) device and an all-inorganic perovskite for a short wavelength IR (SWIR) device having improved chemical stability and long-term stability. I will provide a. An inorganic perovskite material having the general formula A ⁺ B ₂⁺ XY ^{2, where A +} X comprises A ⁺ , a first monovalent alkali metal cation, and X, a first monovalent anion. 1 metal salt, B ²⁺ Y ₂ is a ^{second containing B 2+} , a second divalent alkaline earth metal, a heavy metal, or a transition metal cation, and Y ₂ , two second monovalent anions. An inorganic perovskite material which is a metal salt and has a molar ratio of the first metal salt to the second metal salt of about 2: 1. [Selection diagram] Fig. 1