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Issue 12, 2017
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Investigation on the thermal effects of NaYF4:Er under 1550 nm irradiation

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Abstract

The thermal effects of NaYF4:Er microcrystals under 1550 nm laser diode irradiation were investigated using an infrared thermal imaging method. The results revealed that the temperature of the LD irradiation beam area was non-uniform. The NaYF4:Er sample exhibits a rapid temperature increase within 5–10 s, and the heating process reaches its steady state after 60 s of irradiation when exposed to 1550 nm LD. The response time, temperature increase, and emission intensity of the samples depend on the excitation power density and concentration of doped Er3+ ions. Low excitation power density is required to avoid the influence of thermal effects on the up-conversion emission spectra measurement. Rapid scanning in up-conversion emission spectra measurement is not effective in preventing the heating effect under high excitation power pumping. In addition, a relative deviation of temperature, existing in fluorescence intensity ratio technique, decreased with the increasing irradiation time.

Graphical abstract: Investigation on the thermal effects of NaYF4:Er under 1550 nm irradiation

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Publication details

The article was received on 05 Jan 2017, accepted on 27 Feb 2017 and first published on 27 Feb 2017


Article type: Paper
DOI: 10.1039/C7CP00079K
Citation: Phys. Chem. Chem. Phys., 2017,19, 8465-8470
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    Investigation on the thermal effects of NaYF4:Er under 1550 nm irradiation

    H. Wang, X. Yin, M. Xing, Y. Fu, Y. Tian, X. Feng, T. Jiang and X. Luo, Phys. Chem. Chem. Phys., 2017, 19, 8465
    DOI: 10.1039/C7CP00079K

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