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Dy:YAG Phosphor Coating Using the Solution Precursor Plasma Spray Process
Author(s) -
Chen Dianying,
Jordan Eric H.,
Renfro Michael W.,
Gell Maurice
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02846.x
Subject(s) - phosphor , materials science , scanning electron microscope , coating , photoluminescence , microstructure , phase (matter) , analytical chemistry (journal) , diffraction , luminescence , solution precursor plasma spray , micrograph , plasma , chemical engineering , composite material , thermal spraying , optics , optoelectronics , chemistry , chromatography , physics , organic chemistry , quantum mechanics , engineering
Dy:YAG phosphor coatings were deposited using the solution precursor plasma spray process. The phase composition, microstructure, and photoluminescent properties of the as‐deposited coatings were investigated. X‐ray diffraction analysis confirmed that the coating is mainly composed of the YAG phase with a small amount of an intermediate YAP phase. Scanning electron microscopy micrograph revealed that the as‐sprayed coating has columnar structures with a thickness of ∼60 μm. The measurement of photoluminescent properties indicated that the phosphor coating exhibits two predominant emission regions: a blue region (470–500 nm) and a yellow region (560–600 nm), which are assigned to 4 F 9/2 – 6 H 15/2 and 4 F 9/2 – 6 H 13/2 transitions, respectively.