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Effect of Laser Drilling on the Microstructure and Luminescence of YAG :Ce,Si Phosphor Ceramics
Author(s) -
Nien YungTang,
Ma ChiaWei,
Chen InGann
Publication year - 2014
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12345
Subject(s) - materials science , phosphor , ceramic , laser , photoluminescence , microstructure , luminescence , optoelectronics , blue laser , diode , optics , analytical chemistry (journal) , composite material , chemistry , physics , chromatography
Y 3 Al 5 O 12 :Ce,Si ( YAG :Ce,Si) phosphor ceramics prepared by a solid‐state reaction method were drilled with an array of holes in a diameter of 100 μm. The laser‐induced heat‐affected zone surrounding the laser‐drilled holes with a ring width of about 150 μm was analyzed to consist of Y 4 Al 2 O 9 , YA lO 3 , and Al 2 O 3 phases, induced by the phase transformations from the YAG melt during laser drilling. Photoluminescence study of the YAG :Ce,Si phosphor ceramic indicated variable blue light transmission and yellow emission, suggesting the potential of tuning blue/yellow intensity ratio as well as precise color control of light‐emitting diodes.