Synthesis and properties of nanocrystalline CsI

S. O. Klimonsky, K. F. Sheberstov, A. E. Gol'Dt, A. S. Sinitskii, V. Yu Yakovlev, L. N. Trefilova

Research output: Contribution to journalArticle

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Abstract

The structure and properties of fine CsI powders prepared by spray pyrolysis and synthetic opal (SiO 2) based composites containing CsI in their pores have been studied by electron microscopy, X-ray diffraction, and luminescence spectrometry. The powders consisted of nanocrystalline particles which increased in size from 35 to 55 nm with increasing pyrolysis temperature. In the opal/CsI composites, the CsI nanocrystallites were about 45-50 nm in size and formed a single three-dimensional network between the SiO 2 spheres. In going from bulk crystals to their nanocrystalline analogs, the size effect on CsI luminescence leads to a reduction in luminescence yield, a redshift of the emission bands of the on-center and off-center self-trapped excitons (STEs), and an increase in the contribution of the off-center STEs to the net intrinsic emission yield. The emission decay kinetics of the off-center STEs is insensitive to the crystallite size.

Original languageEnglish
Pages (from-to)1033-1038
Number of pages6
JournalInorganic Materials
Volume47
Issue number9
DOIs
Publication statusPublished - 1 Sep 2011

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Excitons
Luminescence
Powders
Nanocrystallites
Spray pyrolysis
Composite materials
Crystallite size
Spectrometry
Electron microscopy
Pyrolysis
X ray diffraction
Crystals
Kinetics
LDS 751
Temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Inorganic Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

Klimonsky, S. O., Sheberstov, K. F., Gol'Dt, A. E., Sinitskii, A. S., Yakovlev, V. Y., & Trefilova, L. N. (2011). Synthesis and properties of nanocrystalline CsI. Inorganic Materials, 47(9), 1033-1038. https://doi.org/10.1134/S0020168511090111

Synthesis and properties of nanocrystalline CsI. / Klimonsky, S. O.; Sheberstov, K. F.; Gol'Dt, A. E.; Sinitskii, A. S.; Yakovlev, V. Yu; Trefilova, L. N.

In: Inorganic Materials, Vol. 47, No. 9, 01.09.2011, p. 1033-1038.

Research output: Contribution to journalArticle

Klimonsky, SO, Sheberstov, KF, Gol'Dt, AE, Sinitskii, AS, Yakovlev, VY & Trefilova, LN 2011, 'Synthesis and properties of nanocrystalline CsI', Inorganic Materials, vol. 47, no. 9, pp. 1033-1038. https://doi.org/10.1134/S0020168511090111
Klimonsky SO, Sheberstov KF, Gol'Dt AE, Sinitskii AS, Yakovlev VY, Trefilova LN. Synthesis and properties of nanocrystalline CsI. Inorganic Materials. 2011 Sep 1;47(9):1033-1038. https://doi.org/10.1134/S0020168511090111
Klimonsky, S. O. ; Sheberstov, K. F. ; Gol'Dt, A. E. ; Sinitskii, A. S. ; Yakovlev, V. Yu ; Trefilova, L. N. / Synthesis and properties of nanocrystalline CsI. In: Inorganic Materials. 2011 ; Vol. 47, No. 9. pp. 1033-1038.
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