Abstract: The invention relates to a method for the preparation of luminescent nanocomposites comprising metal halide nanocrystals co-embedded with inorganic salts in the pores of a porous metal oxide matrix comprising the steps of: a) preparing a mixture comprising at least a metal halide, a combination of inorganic salts, and porous metal oxide particles in the absence of an organic solvent; b) heating above the melting temperature of the mixture of step a); c) cooling to obtain the nanocomposite. It further relates to nanocomposites obtained with the claimed method and optoelectronic devices, tracers and tagging material comprising the same.

Abstract: Described herein are materials comprising (1) a monomer or a polymer; (2) perovskite quantum dots interspersed in the monomer or the polymer, each of the perovskite quantum dots independently having the formula: Csa(MA)b(FA)cRbdPbpSnrBisClxBryIz, wherein: MA is CH3NH3; FA is HC(NH2)2; a, b, c, and d are each independently a number from 0 to 1, provided that the sum of a, b, c, and d is 1; p, r, and s are each independently a number from 0 to 1, provided that the sum of p, r, and s is 1; and x, y, and z are each independently a number from 0 to 3, provided that the sum of x, y, and z is 3; and (3) an additive interspersed in the monomer or the polymer, the additive comprising: a halide-based additive; a light scattering agent having the formula: M2O3, wherein M is, at each occurrence, independently, a metal, provided that at most one instance of M is a group 13 element; or both. Also described are devices comprising such materials, as well as methods of forming such materials.

Abstract: Embodiments of the present disclosure describe a method of energy storage and release based on crystallization-dissolution comprising heating a solute-solvent system to decrease a solubility of a solute in the solvent and induce crystal formation; cooling a solute-solvent system to increase the solubility of the solute in the solvent and induce crystal dissolution; wherein energy is stored in the crystal upon heating and released from the crystal upon cooling.

Abstract: Embodiments of the present disclosure describe a method of energy storage and release based on crystallization-dissolution comprising heating a solute-solvent system to decrease a solubility of a solute in the solvent and induce crystal formation; cooling a solute-solvent system to increase the solubility of the solute in the solvent and induce crystal dissolution; wherein energy is stored in the crystal upon heating and released from the crystal upon cooling.