24 August 2009 High thermal sensitivity of Er3+ and Li+ codoped Y2O3 nanocrystals under 976 nm excitation
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Proceedings Volume 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors; 73810B (2009); doi: 10.1117/12.834106
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China
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.
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Yunfeng Bai, Yuxiao Wang, Ruigang Yan, Le Yang, Lu Liu, Yinglin Song, "High thermal sensitivity of Er3+ and Li+ codoped Y2O3 nanocrystals under 976 nm excitation", 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; https://doi.org/10.1117/12.834106
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KEYWORDS
Nanocrystals

Luminescence

Temperature metrology

Temperature sensors

Upconversion

Erbium

Ions

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