High efficiency photoluminescent material for optical upconversi

Details High efficiency photoluminescent material for optical upconversi High efficiency photoluminescent material for optical upconversi

1987-07-28

1989-06-27

Cooper, Jack

Stock material or miscellaneous articles

Composite

Of inorganic material

25230145, C09K 1156

Patent

active

048429600

ABSTRACT:
Photoluminescent materials useful for photonic applications are prepared using a dual base material, first, second and third dopants, and a fusable salt. The base materials are alkaline earth metal sulfides, such as strontium and cerium sulfides. Lithium fluoride is used to enhance the interdiffusion of materials. Samarium, europium and cerium are used together for dopants in providing electron traps. The photoluminescent material is made according to a process involving heating of the material to a fusing temperature. The material is then either ground to particles or is deposited as a thin film for different uses.

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