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Novel Upconversion Behavior in Ho 3+ ‐Doped Transparent Oxyfluoride Glass‐Ceramics Containing NaYbF 4 Nanocrystals
Author(s) -
Wei YunLe,
Chi XianNian,
Liu XueYun,
Wei RongFei,
Guo Hai
Publication year - 2013
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/jace.12457
Subject(s) - photon upconversion , materials science , crystallization , nanocrystal , ceramic , doping , luminescence , quenching (fluorescence) , glass ceramic , absorption (acoustics) , absorption spectroscopy , excited state , laser , relaxation (psychology) , analytical chemistry (journal) , optoelectronics , mineralogy , chemical engineering , nanotechnology , optics , composite material , fluorescence , chemistry , atomic physics , psychology , social psychology , physics , chromatography , engineering
Novel Ho 3+ doped highly transparent NaYbF 4 glass‐ceramics were successfully fabricated by melt‐quenching technique. Their structural and luminescent properties were systemically investigated by XRD , TEM , absorption spectra, upconversion spectra, and lifetime measurements. Excited by 980‐nm laser, samples exhibit characteristic emissions of Ho 3+ . Impressively, the luminescent color can be tuned easily from red for precursor glass to green for glass‐ceramics. Such novel phenomenon was elaborately investigated and is owing to the reduced multiphonon nonradiative relaxation and enhanced cross‐relaxation of Ho 3+ in NaYbF 4 nanocrystals after crystallization. Our results indicate that NaYbF 4 transparent glass‐ceramics is an excellent host for upconversion.