Method to synthesize metal halide perovskite particles with high luminescence and stability

DWPI Title: Synthesize metal halide perovskite particles, comprises providing solution comprising metal halide, tetraalkylammonium halide surfactant and mixing non polar antisolvent with the solution to precipitate metal halide perovskite particles
Abstract: The invention provides a convenient solution-based synthesis for metal halide perovskite particles. This method requires only mild conditions and can be easily scaled up. A ligand of a proper molecule size and an optimized precursor ratio are important to obtain pure phase particles. As an example, lead bromide perovskite particles exhibited a narrow monochromatic band gap, which can be tuned by partial halide substitution, and PLQY up to 75% making this material an excellent candidate for light emission and display applications.
Use: The method is useful for synthesize metal halide perovskite particles.
Advantage: The method: provides a metal halide perovskite particle that has high luminescence and stability; requires only mild conditions and easily scaled up; utilizes ligand of proper molecule size and an optimized precursor ratio are important to pure phase particles; and provides lead bromide perovskite particles exhibited narrow monochromatic band gap, which tuned by partial halide substitution, and photoluminescence quantum yield up to 75% making this material excellent candidate for light emission and display applications.
Novelty: Synthesize metal halide perovskite particles, comprises providing a solution comprising a metal halide, a tetraalkylammonium halide surfactant, where alkyl is an ethyl or higher group, and an alkali halide in a polar solvent, and mixing a non polar anti solvent with the solution to precipitate metal halide perovskite particles.
Filed: 1/21/2019
Application Number: US16253102A
Tech ID: SD 14854.0
This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention.
Data from Derwent World Patents Index, provided by Clarivate
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