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Wavelength Tailorability of Broadband Near‐Infrared Luminescence in Cr 4+ ‐Activated Transparent Glass‐Ceramics
Author(s) -
Zhuang Yixi,
Tanabe Setsuhisa,
Qiu Jianrong
Publication year - 2014
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.13128
Subject(s) - luminescence , materials science , photoluminescence , ceramic , quantum yield , analytical chemistry (journal) , crystal (programming language) , absorption (acoustics) , infrared , absorption spectroscopy , mineralogy , optics , optoelectronics , chemistry , composite material , physics , chromatography , computer science , fluorescence , programming language
Four Cr 4+ ‐activated transparent glass‐ceramics containing different species of silicate nano‐crystals ( Zn 2 SiO 4 , Mg 2 SiO 4 , Li 2 ZnSiO 4 , and Li 2 MgSiO 4 ) were successfully prepared. Absorption spectra, photoluminescence spectra, lifetime decay curves, and quantum yield of these transparent glass‐ceramics were measured. According to the crystal field strength of Cr 4+ ‐incorporated tetrahedral sites, the broadband near‐infrared (NIR) luminescence of Cr 4+ can be tailored from 1130 to 1350 nm and the lifetime of Cr 4+ luminescence can be prolonged from 6 to 100 μs. Quantum yield in the transparent glass‐ceramics containing Li 2 ZnSiO 4 nano‐crystals reached at 17%, which is the highest value of NIR luminescence in transition‐metal‐activated glass materials.