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

Yunfeng Bai; Yuxiao Wang; Ruigang Yan; Le Yang; Lu Liu; Yinglin Song

doi:10.1117/12.834106

24 August 2009 High thermal sensitivity of Er³⁺ and Li⁺ codoped Y₂O₃ nanocrystals under 976 nm excitation

Yunfeng Bai, Yuxiao Wang, Ruigang Yan, Le Yang, Lu Liu, Yinglin Song

Proceedings Volume 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors; 73810B (2009) https://doi.org/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 ²H_11/2 and ⁴S_3/2 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 I_525nm/I_561nm 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.

Citation Download Citation

Yunfeng Bai, Yuxiao Wang, Ruigang Yan, Le Yang, Lu Liu, and 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); https://doi.org/10.1117/12.834106

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