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Proceedings Paper

High thermal sensitivity of Er[sup]3+[/sup] and Li[sup]+[/sup] codoped Y[sub]2[/sub]O[sub]3[/sub] nanocrystals under 976 nm excitation
Author(s): Yunfeng Bai; Yuxiao Wang; Ruigang Yan; Le Yang; Lu Liu; Yinglin Song
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Paper Abstract

Er3+ and Li+ codoped Y2O3 nanocrystals has been prepared by sol-gel method. Upconversion spectrum and properties of Er3+ has been studied under excitation at 976 nm. Fluorescence intensity ratio of 2H11/2 and 4S3/2 subband levels in the Er3+ and Li+ codoped Y2O 3 nanocrystals have been studied as a function of temperature. In the temperature range of 295-723 K, the I525nm/I561nm has the highest thermal sensitivity the maximum sensitivity is approximately 0.016 K-1. The Y2O3: Er3+/Li+nanocrystals with high fluorescence efficiency and the higher temperature revolution, indicated that it is promising for applications in optical high temperature sensor.

Paper Details

Date Published: 24 August 2009
PDF: 8 pages
Proc. SPIE 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, 73810B (24 August 2009); doi: 10.1117/12.834106
Show Author Affiliations
Yunfeng Bai, Soochow Univ. (China)
Harbin Institute of Technology (China)
Yuxiao Wang, Harbin Institute of Technology (China)
Ruigang Yan, Harbin Institute of Technology (China)
Le Yang, Harbin Institute of Technology (China)
Lu Liu, Harbin Institute of Technology (China)
Yinglin Song, Soochow Univ. (China)


Published in SPIE Proceedings Vol. 7381:
International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors

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