| 摘要 |
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 mesas, each of the mesas having an incline, a decline, and a horizontal surface, the mesas being separated from one another by horizontal segments of the substrate and wherein: (i) the ratio of the height of each of the mesas to the width of the horizontal segments is in the range of about 1:20 to 1:4; (ii) the ratio of the width of each of the mesas to the width of the horizontal segments is in the ratio of about 1:30 to 1:4; and (iii) the angles of incline and decline of each of the mesas are between about 5 DEG to 85 DEG ; and (c) depositing an alkali halide phosphor on the patterned surface of the substrate of step (b), thereby forming cracks, in the deposited phosphor, originating from the inclines and/or declines of each of the mesas.
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