Method for manufacturing metal halogen perovskite nanoparticles and metal halogen perovskite nanoparticle dispersion

摘要

Provided is a method for preparing metal halide perovskite nanoparticles. Method for producing a metal halide perovskite nanoparticles of the present invention, preparing a mixed solution containing R ¹ COOH, R ² NH ₂ and a solvent, the step of heat treatment after the addition of thallium (I) salt to the mixed solution And adding a metal halide (MX ₂ ) solution to the heat-treated mixed solution and reacting to form TlMX ₃ capped with R ¹ CONHR ² , wherein M is Sn or Pb, and X is Cl, Br or I R ¹ and R ² may be a saturated or unsaturated alkyl group having 6 to 28 carbon atoms regardless of each other. According to the present invention, by providing a method for synthesizing inorganic halogen perovskite nanoparticles using a novel stabilizer, it is possible to produce a metal alkali perovskite nanoparticles based on pseudo-alkali metal with reduced crystal defects.