Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5397806 | Journal of Luminescence | 2017 | 7 Pages |
Abstract
In this work we report on the investigation of high-temperature thermographic phosphors Dy3+-doped yttrium aluminum garnet and the mixture of yttrium aluminum perovskite / yttrium aluminum garnet (YAP/YAG). The phosphors were synthesized by conventional high temperature solid-state method using lithium fluoride (LiF) as a flux. The latter serves also as a source of co-doping Li+ and F- ions affecting the luminescent properties. The photoluminescence intensity of YAP/YAG:Dy (75/25%) mixture was doubled at room temperature compared to YAG:Dy and the intensity ratio of the lines in the regions 450-460 and 480-500Â nm was increased from 0.45 to 0.63 at 1293Â K, favoring temperature measurements. Therefore, the mixture of YAlO3/Y3Al5O12:Dy is promising material for high temperature phosphor thermometry.
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Authors
Liudmyla M. Chepyga, Andres Osvet, Christoph J. Brabec, Miroslaw Batentschuk,