Process for producing electroluminescent yellow zinc sulfide pho

Details Process for producing electroluminescent yellow zinc sulfide pho Process for producing electroluminescent yellow zinc sulfide pho

1990-01-11

1991-04-23

Cooper, Jack

Compositions

Inorganic luminescent compositions

Zinc or cadmium containing

C09K 1156

Patent

active

050098080

ABSTRACT:
A phosphor composition consisting essentially of particles of zinc sulfide electroluminescent phosphor activated with from about 0.7% by weight of about 1.3% by weight of manganese, based upon the total weight of the phosphor composition, wherein the electroluminescent emission of the phosphor has an x color coordinate value of from about 0.522 to about 0.532 and a y color coordinate value of from about 0.460 to about 0.470 and an efficiency of greater than about 5.6 lumens per watt at 115V/400 Hz. A solid state process for producing the foregoing phosphor comprises a multiple firing in order to incorporate manganese, chloride and copper ions into the zinc sulfide lattice. Controlled levels of manganese yield highly efficient electroluminescent phosphors.

REFERENCES:
patent: 2743239 (1956-04-01), Froelich
patent: 3080325 (1963-03-01), Aven et al.
patent: 3165476 (1965-01-01), Wachtel
patent: 3418248 (1968-12-01), Thornton
patent: 4859361 (1989-08-01), Reilly et al.

Affiliated with

Also associated with

Rating

Process for producing electroluminescent yellow zinc sulfide pho does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing electroluminescent yellow zinc sulfide pho, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing electroluminescent yellow zinc sulfide pho will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1619868