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Photoluminescent and storage properties of photostimulable core/shell type silicate nanoparticles

 
: Osvet, Andres; Batentschuk, Miroslaw; Milde, Moritz; Lundt, Nils; Gellermann, Carsten; Dembski, Sofia; Winnacker, Albrecht; Brabec, Christoph J.

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Physica status solidi. C 10 (2013), No.2, pp.180-184
ISSN: 1610-1634
ISSN: 1610-1642
ISSN: 1862-6351
International Conference on Defects in Insulating Materials (ICDIM) <2012, Santa Fe/NM>
English
Journal Article, Conference Paper
Fraunhofer ISC ()

Abstract
We have prepared hybrid luminescent nanoparticles with amorphous SiO2 cores and crystalline Zn2SiO4:Mn2+shells by sol-gel technology. Under UV excitation the shells of the particles emit green Mn2+-related luminescence at 525 nm. In addition, under the UV excitation at least two kinds of traps are filled with electrons, contributing to a long afterglow and photostimulated luminescence. The paper presents the details of the charging and stimulation characteristics of the photostimulated luminescence.

: http://publica.fraunhofer.de/documents/N-233123.html