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Up-conversion mechanisms of Yb-Er co-doped Al2O3 film and its temperature characteristics

Li Shu-Feng Ding Jian-Hua Li Cheng-Ren Ming Cheng-Guo Wang Bao-Cheng Zhang Li

Up-conversion mechanisms of Yb-Er co-doped Al2O3 film and its temperature characteristics

Li Shu-Feng, Ding Jian-Hua, Li Cheng-Ren, Ming Cheng-Guo, Wang Bao-Cheng, Zhang Li
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  • Received Date:  26 February 2008
  • Accepted Date:  08 May 2008
  • Published Online:  20 October 2008

Up-conversion mechanisms of Yb-Er co-doped Al2O3 film and its temperature characteristics

  • 1. (1)大连理工大学物理与光电工程学院,大连 116024; (2)辽宁师范大学物理与电子技术学院,大连 116029

Abstract: Yb-Er co_doped Al2O3 film was prepared on SiO2/Si substrate using a medium frequency magnetron sputtering system, and the concentrations of dopant Er and Yb ions were 0.3% and 3.6%, respectively. The up-conversion mechanisms of Er3+ photoluminescence at 529 and 549nm were discussed. The fluorescence intensity ratio of the green up-conversion spectra were measured in the temperature range of 291.8—573.3K, and the temperature characteristics were fitted as R=5.37exp(-738/T). At the temperature of 366K, the sensitivity has the maximum value of 0.0039 K-1. The results show that the Yb∶Er∶Al2O3 film is a suitable material for minitype, high-sensitivity and high-temperature optical sensors.

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