Luminescence and ultraviolet excitation spectroscopy of SrI2 and SrI2:Eu2

We report measurements of luminescence and its ultraviolet excitation spectra in SrI2 and SrI2:Eu2+ at temperatures of 10 and 300 K. Attention is focused on determining the exciton energy and its temperature shift from features of the excitation spectra and limits placed by absorption spectroscopy o...

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Bibliographic Details
Published in:Radiation measurements 2013-09, Vol.56, p.13-17
Main Authors: Pankratov, V., Popov, A.I., Shirmane, L., Kotlov, A., Bizarri, G.A., Burger, A., Bhattacharya, P., Tupitsyn, E., Rowe, E., Buliga, V.M., Williams, R.T.
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Band spectra
Crystals
Earth sciences
Earth, ocean, space
Exact sciences and technology
Excitation
Excitation spectra
Excitation spectroscopy
Geochronology
Isotope geochemistry. Geochronology
Luminescence
Radiation measurement
Strontium iodide
Synchrotron radiation
Ultraviolet
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Summary:We report measurements of luminescence and its ultraviolet excitation spectra in SrI2 and SrI2:Eu2+ at temperatures of 10 and 300 K. Attention is focused on determining the exciton energy and its temperature shift from features of the excitation spectra and limits placed by absorption spectroscopy on a 120 μm thin crystal, on observation of a broadened Eu emission band attributed to trace Eu associated with oxygen in nominally undoped crystals, and on adding observations concerning the 3.4 eV band at low temperature attributed by Pustovarov et al. to the self-trapped exciton. ► Luminescence properties of SrI2 and SrI2:Eu single crystals have been investigated. ► Excitation spectroscopy technique using synchrotron radiation was applied. ► Excitonic properties in nominally pure and europium doped crystals have been studied.
ISSN:1350-4487
1879-0925
DOI:10.1016/j.radmeas.2013.02.022