Temperature-dependent broadband near-infrared luminescence in silicate glass ceramics containing Li2MgSiO4: Cr4+ nanocrystals

Transparent glass ceramics containing Li2MgSiO4: Cr4+ nanocrystallites were prepared. Intense broadband near-infrared emission with full width at half-maximum larger than 200 nm and long fluorescence lifetime (τ > 100 μs) were observed. The temperature-dependent optical characteristics of the gla...

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Bibliographic Details
Published inJournal of materials research Vol. 25; no. 9; pp. 1833 - 1837
Main Authors Zhuang, Yixi, Zhou, Jiajia, Xie, Junhua, Teng, Yu, Qiu, Jianrong
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 01.09.2010
Springer International Publishing
Subjects
Applied and Technical Physics
Biomaterials
Infrared (IR) Spectroscopy
Inorganic Chemistry
Materials Engineering
Materials Science
Nanotechnology
Optical Properties
Optical Properties
Infrared (IR) Spectroscopy
Cr
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Summary:Transparent glass ceramics containing Li2MgSiO4: Cr4+ nanocrystallites were prepared. Intense broadband near-infrared emission with full width at half-maximum larger than 200 nm and long fluorescence lifetime (τ > 100 μs) were observed. The temperature-dependent optical characteristics of the glass ceramics containing Li2MgSiO4: Cr4+ crystallites were compared to those of Li2MgSiO4: Cr4+ single crystals. The reason for extra-long near-infrared fluorescence lifetime was illuminated by the mixed effect between 3T2 and 1E levels. The crystal-filed-induced particular energy-level scheme makes the fluorescence lifetime of the glass ceramics containing Li2MgSiO4: Cr4+ crystallites one order longer than those of other Cr4+-doped glass ceramics.
Bibliography:istex:EC35A3B6375B1E724791D2FDCF38BE006AB4C0AC
PII:S0884291400008013
ArticleID:00801
ark:/67375/6GQ-BBWG12G8-J
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.2010.0243