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Radiative Emission at Mid‐Infrared Wavelengths from Rare‐Earth Ions Via Nanocrystal Formation in Oxyfluoride Glasses
Author(s) -
Chung Woon Jin,
Kim Kyoung Hoon,
Park Bong Je,
Seo Hong Seok,
Ahn Joon Tae,
Choi Yong Gyu
Publication year - 2010
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.1551-2916.2010.03918.x
Subject(s) - nanocrystal , infrared , radiative transfer , ion , wavelength , materials science , rare earth , atmosphere (unit) , earth (classical element) , emission intensity , photoluminescence , analytical chemistry (journal) , chemistry , mineralogy , nanotechnology , optics , optoelectronics , physics , thermodynamics , organic chemistry , mathematical physics , chromatography
We observed experimentally that the formation of β‐PbF 2 nanocrystals (NC) in oxyfluoride glass conspicuously altered the local structures of rare‐earth (RE) ions, which then enabled their intra4 f ‐configurational transitions to be luminuous even at mid‐infrared (MIR) wavelengths. Radiative emission centered at ∼2.87 μm originating from Dy 3+ : 6 H 13/2 → 6 H 15/2 transition was remarkably enhanced after the NC were formed by thermal treatment in an ambient atmosphere. However, emission intensities due to Er 3+ : 4 I 11/2 → 4 I 13/2 and Ho 3+ : 5 I 6 → 5 I 7 transitions turned out to be less dependent on the NC formation, which indicated that the enhancement of MIR emission depended on RE.