Alkali iodide doped zinc sulfide electroluminescent phoshor

Details Alkali iodide doped zinc sulfide electroluminescent phoshor Alkali iodide doped zinc sulfide electroluminescent phoshor

1998-12-01

2000-07-18

Koslow, C. Melissa

Compositions

Inorganic luminescent compositions

Zinc or cadmium containing

2523014R, 2523014H, C09K 1161, C09K 1156, C09K 1154

Patent

active

060903112

ABSTRACT:
An electroluminescent phosphor containing an alkali iodide dopant, such as lithium iodide or potassium iodide, and having CIE coordinates of x=0.173 to 0.187 and y=0.392 to <0.424. The phosphor without alkali iodide dopant has CIE coordinates of x.apprxeq.0.180 to 0.184 and y.apprxeq.0.424 to 0.426. The method of making the phosphor includes adding the alkali iodides during a second firing step.

REFERENCES:
patent: 4931651 (1990-06-01), Kagami et al.

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