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Proceedings Paper

Temperature sensing using a Cr:ZnGa2O4 new phosphor
Author(s): S. K. Sharma; E. Glais; M. Pellerin; C. Chaneac; B. Viana
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Paper Abstract

The luminescence emission of a thermographic phosphor based on trivalent chromium doped ZGO (ZnGa2O4) bulk as well as nanoparticles is here reported. This material has a strong temperature dependence on the optical features such as ratio of their emission bands, bandwidths, bands position as well as the lifetime decay of the Cr3+. This makes this material well suitable as temperature sensor. ZnGa2O4 (ZGO), a normal spinel, exhibits a high brightness persistent luminescence, when doped with Cr3+ ions and shows an emission spectrum centered at 695 nm. At the nanometric scale, ZGO is used for in vivo imaging with a better signal to background ratio than classical fluorescent NIR probes. In this work we investigate the ability of the host to be a new thermographic phosphor. Several optical features are investigated in a broad temperature range (10 K-700 K). A comparison between bulk material and nanoparticles is introduced. The obtained results could be used to determine the optimal design parameters for sensor development.

Paper Details

Date Published: 27 February 2016
PDF: 7 pages
Proc. SPIE 9749, Oxide-based Materials and Devices VII, 974922 (27 February 2016); doi: 10.1117/12.2219990
Show Author Affiliations
S. K. Sharma, PSL Research Univ. (France)
E. Glais, PSL Research Univ. (France)
Sorbonne Univ. (France)
M. Pellerin, PSL Research Univ. (France)
Sorbonne Univ. (France)
C. Chaneac, Sorbonne Univ. (France)
B. Viana, PSL Research Univ. (France)

Published in SPIE Proceedings Vol. 9749:
Oxide-based Materials and Devices VII
Ferechteh H. Teherani; David C. Look; David J. Rogers, Editor(s)

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