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Abstract In this work the fabrication and the photoluminescence properties of CaxSr1-xAl2O4 nanocrystals doped with Ca, Tb and Yb are investigated. The photoluminescence quantum yield measured at 980 nm of the… Click to show full abstract
Abstract In this work the fabrication and the photoluminescence properties of CaxSr1-xAl2O4 nanocrystals doped with Ca, Tb and Yb are investigated. The photoluminescence quantum yield measured at 980 nm of the Yb doped CaxSr1-xAl2O4 nanocrystals is found to be 8% for an excitation in the ultraviolet range. However the quantum efficiency decreases with the insertion of Tb. Photoluminescence excitation experiments and time-resolved photoluminescence both conclusively demonstrate that no energy transfer between Tb and Yb occurs in this host matrix.
Journal Title: Journal of Luminescence
Year Published: 2018
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