Patent #: CN111961467A

Inventor: Liang Li, Bo Wang

Highlights

• The patent describes a perovskite nanocrystal embedded in a metal-halide carrier, with the carrier acting as a growth and protection medium.
• The preparation uses solid-state mixing and melting at 650–1000 °C, offering a simple, low-cost, solvent-free route to high-brightness, high-color-purity luminescent materials.

Summary

This patent application protects a molten-halide strategy for making perovskite composite luminescent materials. Perovskite precursors and metal halides are mixed, melted, cooled, crystallized, and ground to produce a luminescent composite. The metal halide serves as a carrier that supports nanocrystal formation and helps stabilize the material. The invention is important because it reduces dependence on conventional organic-solvent synthesis and aligns perovskite nanocrystal production more closely with ceramic phosphor manufacturing. It is especially relevant for photoluminescent devices, lasers, and nonlinear optical applications.

Patent citation: L. Li and B. Wang, “Perovskite composite luminescent material, preparation method, product and application,” China Patent Application CN111961467A.