Microstructure and NIR to VIS upconversion luminescence of Y[sub]2[/sub]O[sub]3[/sub]:Er translucent ceramics

Dianyuan Wang; Yanyan Guo; Qingkai Wang; Zhangyong Chang; Wei Zeng

doi:10.1117/12.869012

18 November 2010 Microstructure and NIR to VIS upconversion luminescence of Y₂O₃:Er translucent ceramics

Dianyuan Wang, Yanyan Guo, Qingkai Wang, Zhangyong Chang, Wei Zeng

Proceedings Volume 7843, High-Power Lasers and Applications V; 78430C (2010) https://doi.org/10.1117/12.869012
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Y₂O₃:5%Er nanocrystalline powder was prepared by low temperature combustion method. The crystal structure and morphology were analyzed by means of XRD and HRTEM. The resultant powders were sintered into translucent ceramics at 1570°C in vacuum for 6 hours. The micrograph of unpolished surface and fracture surfaces showed that the sintered Y₂O₃:Er ceramics with average grain size at about 10μm had homogeneous micro-structure and low pore volume. Under the excitation of 980 nm, 808 nm and 785 nm diode lasers, respectively, very strong green and red upconversion emissions from Er³⁺ ions were observed, the power dependence of upconversion emission intensity was measured to deduce the upconversion mechanism. A trend of upconversion intensity increase first and then decrease with the excitation time was also found for the first time.

Citation Download Citation

Dianyuan Wang, Yanyan Guo, Qingkai Wang, Zhangyong Chang, and Wei Zeng "Microstructure and NIR to VIS upconversion luminescence of Y₂O₃:Er translucent ceramics", Proc. SPIE 7843, High-Power Lasers and Applications V, 78430C (18 November 2010); https://doi.org/10.1117/12.869012

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