Process for forming a phosphor

Details Process for forming a phosphor Process for forming a phosphor

B - Operations, Transporting

05

D

B05D 5/06 (2006.01) C09K 11/08 (2006.01) G01T 1/10 (2006.01) G21K 4/00 (2006.01)

Patent

CA 2131243

ABSTRACT OF THE DISCLOSURE A process for forming a phosphor comprising the steps of: (a) providing a substrate for deposition and growth of an alkali halide phosphor, (b) forming a patterned surface on the substrate comprising a plurality of ridges, each of the ridges having an angular inclined slope, an angular declined slope, the inclined and declined slopes meeting at one common region or point to form a structure having a triangular cross-sectional shape, each ridge being separated from one another by horizontal segments of the substrate and wherein: (i) the ratio of the height of each ridge to the width of each horizontal segment of the substrate separating the ridges is in the range of about 1:100 to 1:5; (ii) the ratio of the width of each ridge to the width of each horizontal segment of the substrate separating the ridges is in the range of about 1:50 to 1:5; and (c) depositing an alkali halide phosphor on the patterned surface of the substrate of step (b), thereby forming cracks, in the deposited phosphor, which originate or emanate from the angular inclined and/or declined slopes of each ridge.

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