LUMINESCENT MATERIALS THAT EMIT LIGHT IN THE VISIBLE RANGE OR THE NEAR INFRARED RANGE AND METHODS OF FORMING THEREOF

摘要

Luminescent materials and methods of forming such materials are described herein. A method of forming a luminescent material includes: (1) providing a source of A and X, wherein A is selected from at least one of elements of Group 1, and X is selected from at least one of elements of Group 17; (2) providing a source of B, wherein B is selected from at least one of elements of Group 14; (3) subjecting the source of A and X and the source of B to vacuum deposition to form a precursor layer over a substrate; (4) forming an encapsulation layer over the precursor layer to form an assembly of layers; and (5) heating the assembly of layers to a temperature Theat to form a luminescent material within the precursor layer.

主权项

1. A method of forming a luminescent material, comprising:
providing a substrate; providing a source of A and X, wherein A is selected from at least one of elements of Group 1, and X is selected from at least one of elements of Group 17; providing a source of B, wherein B is selected from at least one of elements of Group 14; subjecting the source of A and X and the source of B to vacuum deposition to form a precursor layer over the substrate; forming an encapsulation layer over the precursor layer to form an assembly of layers including the substrate, the precursor layer, and the encapsulation layer; and heating the assembly of layers to a temperature Theat to form a luminescent material within the precursor layer, wherein the luminescent material includes A, B, and X, one of the source of A and X and the source of B has a lower melting point Tm1, another of the source of A and X and the source of B has a higher melting point Tm2, and Tm1