Issue 21, 2011
From the journal:

CrystEngComm

Fresnoite thin films grown by pulsed laser deposition: photoluminescence and laser crystallization†

Alexander Müller,a   Michael Lorenz,*a   Kerstin Brachwitz,a   Jörg Lenzner,a   Kai Mittwoch,b   Wolfgang Skorupa,c   Marius Grundmanna  and  Thomas Höche‡d  

* Corresponding authors

a Institut für Experimentelle Physik II, Universität Leipzig, Linnéstr. 5, Leipzig, Germany
E-mail: mlorenz@physik.uni-leipzig.de
Fax: +49 341 97 39286
Tel: +49 341 97 32661

b 3D-Micromac AG, Technologie-Campus 8, Chemnitz, Germany

c Semiconductor Materials Division, Helmholtz Zentrum Dresden-Rossendorf, POB 51 01 19, Dresden, Germany

d Leibniz-Institut für Oberflächenmodifizierung e.V., Permoserstr. 15, Leipzig, Germany

Abstract

Fresnoite (Ba2TiSi2O8–BTS) thin films were grown on fused quartz, silicon (100), MgO (100), and a-plane sapphire by pulsed laser deposition, and crystallized by subsequent thermal or flash lamp annealing. The corresponding texture evolution of the BTS thin films was studied by X-ray diffraction. The preferential (001) texture of the crystallised BTS films was found to be most pronounced on sapphire substrates. The broad photoluminescence band of the BTS thin films depends only weakly on temperature. The intensity of the BTS luminescence can be as high as that of the most efficient oxide scintillator materials. In order to qualify the fresnoite thin films for photonic applications, we demonstrate infrared-laser direct writing in amorphous BTS films which allows a local crystallisation and patterning. A subsequent considerable enhancement of luminescence intensity can be applied for UV-sensitive marking of nearly any object.

Graphical abstract: Fresnoite thin films grown by pulsed laser deposition: photoluminescence and laser crystallization

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Article information

DOI
https://doi.org/10.1039/C1CE05265A
Article type
Paper
Submitted
01 Mar 2011
Accepted
27 Apr 2011
First published
23 May 2011

CrystEngComm, 2011,13, 6377-6385

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Fresnoite thin films grown by pulsed laser deposition: photoluminescence and laser crystallization

A. Müller, M. Lorenz, K. Brachwitz, J. Lenzner, K. Mittwoch, W. Skorupa, M. Grundmann and T. Höche, CrystEngComm, 2011, 13, 6377 DOI: 10.1039/C1CE05265A

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