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Comparison of the Luminescence Properties of Dy 3+ in α‐Sialon and Oxynitride Glass
Author(s) -
Chen WeiWu,
Su XinLu,
Wang PeiLing,
Yan DongSheng,
Cheng YiBing,
Watari Koji
Publication year - 2005
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.1551-2916.2005.00513.x
Subject(s) - sialon , luminescence , materials science , analytical chemistry (journal) , mineralogy , ion , excited state , phosphor , emission spectrum , photoluminescence , spectral line , chemistry , ceramic , metallurgy , optoelectronics , atomic physics , physics , organic chemistry , chromatography , astronomy
Dy‐α‐sialon and β‐Si 3 N 4 materials containing Dy‐oxynitride glass were hot pressed at 1800°C for 1 h. The luminescence spectra of Dy 3+ in these samples were compared when excited at 350 nm. The results showed that two strong emission bands in the region 470–500 nm and 570‐600 nm, associated with the 4 F 9/2 → 6 H 15/2 and 4 F 9/2 → 6 H 13/2 transitions of Dy 3+ ions, were observed in Dy‐α‐sialon. However, no emission peak was detected from the β‐Si 3 N 4 sample, despite it containing the same amount of Dy 3+ cations. This proved that only the Dy 3+ cations in the α‐sialon structure, not those in the oxynitride glass, produce the luminescence spectrum.