NDLI: Luminescence of aggregate centers in CsBr:Eu$^{2+}$ single crystals

Content Provider	Springer Nature Link
Author	Zorenko, Yu. V. Turchak, R. M. Voznyak, T. I. Mamai, Yu. B.
Copyright Year	2006
Abstract	We have used the Bridgman method to grow CsBr:Eu$^{2+}$ single crystals, adding an activator to the mix in the form of Eu$_{2}$O$_{3}$ in amounts of 0.0125, 0.0250, and 0.0500 mole %. At T = 300 K, we studied the absorption spectra, the photoluminescence (PL) spectra, and the photostimulated luminescence (PSL) spectra of the grown crystals. We have established that the structure of the photoluminescence and photostimulated luminescence centers in crystals grown from the CsBr:Eu$_{2}$O$_{3}$ mix includes isolated dipole centers Eu$^{2+}$-V$_{Cs}$, emitting in bands with maxima at 432 nm and 455 nm respectively, and in crystals grown at activator concentrations of 0.025 and 0.050 mole % they also include aggregate centers (AC) based on CsEuBr$_{3}$ nanocrystals with emission bands at 515 m and 523 nm. We have shown that the maximum concentration of aggregate centers of the CsEuBr$_{3}$ nanocrystal type in CsBr:Eu$^{2+}$ crystals is achieved for an activator content in the mix within the range 0.01–0.05 mole %.
Starting Page	406
Ending Page	410
Page Count	5
File Format	PDF
ISSN	00219037
Journal	Journal of Applied Spectroscopy
Volume Number	73
Issue Number	3
e-ISSN	15738647
Language	English
Publisher	Kluwer Academic Publishers-Consultants Bureau
Publisher Date	2006-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	storage phosphors CsBr:Eu$^{2+}$ single crystal aggregate centers luminescence Analytical Chemistry Atomic and Molecular Structure and Spectra
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Condensed Matter Physics

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