Site symmetry and host sensitization-dependence of Eu3+ real-time luminescence in tin dioxide nanoparticles

Joaquín Fernández; Rolindes Balda; Concepción Cascales; Sara García-Revilla

doi:10.1117/12.2507261

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27 February 2019 Site symmetry and host sensitization-dependence of Eu³⁺ real-time luminescence in tin dioxide nanoparticles

Joaquín Fernández; Rolindes Balda; Concepción Cascales; Sara García-Revilla

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Proceedings Volume 10914, Optical Components and Materials XVI; 109140T (2019) https://doi.org/10.1117/12.2507261
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

A detailed investigation of the dependence of the real time luminescence of Eu³⁺-doped tin dioxide nanopowders on rare earth site symmetry and host defects is given. Ultrafast spectroscopy shows that host-rare earth energy transfer occurs at a transfer rate of about 1.5×10⁶ s^-1, whereas the intrinsic broad band SnO₂ emission has a very short build up time, of the order of 60 ps, and a lifetime of hundreds of picoseconds. These results validate the hypothesis that both host and matrix-excited RE emissions are decoupled due to the different origins of the involved physical mechanisms.

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Joaquín Fernández, Rolindes Balda, Concepción Cascales, and Sara García-Revilla "Site symmetry and host sensitization-dependence of Eu³⁺ real-time luminescence in tin dioxide nanoparticles", Proc. SPIE 10914, Optical Components and Materials XVI, 109140T (27 February 2019); https://doi.org/10.1117/12.2507261

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