Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/62005
Title: Simultaneous observation of up/down conversion photoluminescence and colossal permittivity properties in (Er+Nb) co-doped TiO2 materials
Authors: Tse, MY
Tsang, MK
Wong, YT
Chan, YL
Hao, J 
Issue Date: 2016
Source: Applied physics letters, 2016, v. 109, no. 4, 42903, p. 042903-1-042903-5
Abstract: We have investigated the optical and dielectric properties of rutile TiO2 doped with Nb and Er, i.e., (Er0.5Nb0.5)xTi1- xO2. The up/downconversion photoluminescence was observed in the visible and near-infrared region from the materials under 980 nm laser diode excitation. The upconversion emissions are attributed to the energy transfer between Er ions in the excited states. Moreover, the dielectric measurements indicate that the fabricated materials simultaneously present colossal permittivity properties with relatively low dielectric loss. Our work demonstrates the coexistence of both interesting luminescence and attractive dielectric characteristics in (Er+Nb) co-doped TiO2, showing the potential for multifunctional applications.
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.4959829
Rights: © 2016 Author(s).
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in M. Y. Tse et al., Appl. Phys. Lett. 109, 042903 (2016) and may be found at https://dx.doi.org/10.1063/1.4959829
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