Journal
JOURNAL OF LUMINESCENCE
Volume 188, Issue -, Pages 582-588Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2017.04.070
Keywords
Phosphor thermometry; Luminescence; YAP; YAG; Dysprosium
Categories
Funding
- Bavaria on the Move initiative of the state of Bavaria
- Bayerische Forschungsstiftung [DOK-170-14]
- Erlangen Graduate School in Advanced Optical Technologies (SAOT) by the German Research Foundation (DFG) of the German excellence initiative
- Cluster of Excellence Engineering of Advanced Materials (EAM) at the University Erlangen-Nurnberg
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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 480-500 nm was increased from 0.45 to 0.63 at 1293 K, favoring temperature measurements. Therefore, the mixture of YAlO3/Y3Al5O12:Dy is promising material for high temperature phosphor thermometry.
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