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Dual-mode infrared laser excited synergistic effect in NaGdF4:Er3+ Nano-Glass-Ceramics

Abstract

The realization of absorption and conversion of wide band infrared light has been a challenge in the field of upconversion luminescence. Herein, a facile physical approach is reported to realize cooperative absorption and conversion of dual-band infrared light from NaGdF4:Er3+ nano-glass-ceramics by employing dual-mode excitation source (980 nm + 1545 nm). A synergistic effect of infrared photons induced by dual-wavelength infrared excitation is observed. The dual-mode excited red emission intensity is 2.76 times the total red emission intensities from 980 nm and 1545 nm single excitation. This upconversion synergistic effect can be modulated by adjusting the single excitation power, and is proved to be originated from ground and excited state absorption, in which the Er3+ ions in metastable states excited by 980 nm (or 1545 nm) photons are excited again by the 1545 nm (or 980 nm) infrared photons. A rate equation model is established to simulate the dynamic process in dual-mode infrared upconversion process. The synergistic effect refers us to a way to convert two low-energy infrared photons into middle-energy visible photons to enhance the upconversion efficiency of rare earth ions doped glass ceramics.

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Publication details

The article was received on 13 May 2018, accepted on 01 Aug 2018 and first published on 01 Aug 2018


Article type: Paper
DOI: 10.1039/C8CP02974A
Citation: Phys. Chem. Chem. Phys., 2018, Accepted Manuscript
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    Dual-mode infrared laser excited synergistic effect in NaGdF4:Er3+ Nano-Glass-Ceramics

    X. Wang, Y. Wang, Y. Bu, J. Cheng and X. Yan, Phys. Chem. Chem. Phys., 2018, Accepted Manuscript , DOI: 10.1039/C8CP02974A

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