期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 105, 期 4, 页码 2616-2624出版社
WILEY
DOI: 10.1111/jace.18285
关键词
bismuth; glass; photoluminescence; yellow emission
资金
- EuropeanResearch Council (ERC) under theEuropean Union'sHorizon 2020 research and innovation program [681652]
The study discusses a synthesis procedure for a glass-crystal composite material comprising of bismuth-doped zirconia within an aluminoborate glass phase, offering tunable and broad photoemission characteristics while maintaining advantageous thermal behavior when encapsulated within the glass phase.
Tuning the optical properties of active species embedded within a glass matrix by modifying the ligand environment is of interest for luminescence-based technologies, for example, in optical sensing, data transmission, or spectral conversion. Here, we discuss a facile synthesis procedure for a glass-crystal composite material comprising of bismuth (Bi)-doped zirconia within an aluminoborate glass phase. The approach offers tunable and broad photoemission characteristics in the visible spectral region from 400 to 750 nm. Incorporation of Bi ions into the crystal phase enhances the photoemission intensity by two orders of magnitude, with an external quantum efficiency of about 29%. At higher ZrO2 dopant concentration, we observe a red-shift of both the excitation and the emission bands to match commodity ultra-violet light emitting diodes as excitation sources. Encapsulation within the aluminoborate glass phase provides advantageous thermal behavior, with the emission intensity remaining at >80 % of its initial value up to a temperature of 400 K.
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