Journal article
Spectroscopic Signatures of Sub-Second Laser-Calcined Dy3+-Doped Oxide Precursors for Use in ex Situ Thermal Impulse Sensors
Journal of physical chemistry. C, Vol.121(38), pp.20955-20966
09/28/2017
Abstract
We measure the phase-dependent spectroscopic signatures photoluminescence (PL) emission spectrum, PL excitation spectrum, and PL lifetime of three different heat treated Dy3+-doped oxide precursors (TiO2, Y2O3, and ZrO2), which are calcined at temperatures ranging from 440 to 1256 K for 100 ms. On the basis of these spectroscopic measurements we compute temperature calibration curves, which correlate a given spectroscopic signature to a specific calcination temperature. We find that the emission/excitation spectra-based calibration curves for a given material, in general, have the same transition temperature within uncertainty, but the lifetime-based calibration curve is found to transition at a lower temperature. This difference is due to the emission/excitation-based curves depending on crystallization of the oxide hosts, while the lifetime changes due to the decomposition of the precursor compound, which eliminates some PL quenchers, including high energy O-H, C-O, and C-O-2 vibrations. The observation of two different kinetic phenomenon in a single oxide host has promising applications in ex situ thermal impulse sensors, which have uses in explosive fireballs, combustion science, and arson investigations.
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Details
- Title
- Spectroscopic Signatures of Sub-Second Laser-Calcined Dy3+-Doped Oxide Precursors for Use in ex Situ Thermal Impulse Sensors
- Creators
- Benjamin R. Anderson - Washington State University SpokaneRay Gunawidjaja - Washington State UniversityHergen Eilers - Washington State University Spokane
- Publication Details
- Journal of physical chemistry. C, Vol.121(38), pp.20955-20966
- Academic Unit
- Institute for Shock Physics
- Publisher
- Amer Chemical Soc
- Number of pages
- 12
- Grant note
- HDTRA1-15-1-0044 / Defense Threat Reduction Agency; United States Department of Defense
- Identifiers
- 99900876939001842
- Language
- English
- Resource Type
- Journal article