Intense red upconversion emission and temperature sensing in Er3+/Yb3+ co-doped Ba5Gd8Zn4O21 phosphor
Zincate Ba5Gd8Zn4O21 phosphors with various Er3+ and Yb3+ concentrations were prepared via a simple solid state reaction, and their crystal structures were examined by means of X-ray diffraction (XRD). Pumped by 980 nm, the zincate phosphors exhibit intense red upconversion emission corresponding to the 4F9/2→4I15/2 transition. Tested under the same condition, it was found that the upconversion emission of zincate phosphor was intenser than that of commercial Y2O3:Er3+/Yb3+ phosphor. Hence, it is believed that Ba5Gd8Zn4O21 is a favorable host material for high efficient upconversion luminescence. Based on the change of their intensities ratio of 2H11/2 and 4S3/2 emissions with temperature, the temperature sensing behavior of the phosphor was studied, in which the maximum sensor sensitivity was deduced to be 0.0024 K–1. Moreover, with the increase of temperature, the emission colors of the phosphor can be adjusted from red to yellow-green. Therefore, this phosphor may have potential application for temperature sensor as well as for warning function to ambient temperature.
No References for this article.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: September 1, 2013
More about this publication?
- Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites