Stimulated structural changes of Se in nanolayered composite films

István Csarnovics (1) , Petr Nemec (2) , Virginie Nazabal (3) , Miklos Veres (4) , Attila Csik (5) , Mathieu Allix (6) , Sandor Kokenyesi (1)

1 Department of Experimental Physics
2 Department of Graphic Arts and Photophysics [University of Pardubice]
3 ISCR - Institut des Sciences Chimiques de Rennes
4 Institute of Solid State Physics and Optics
5 ATOMKI - Institute for Nuclear Research [Budapest]
6 CEMHTI - Conditions Extrêmes et Matériaux : Haute Température et Irradiation

Amorphous selenium (a-Se) is the simplest model material for investigation of the well-known photoinduced structural and optical transformations in amorphous chalcogenides. Since a lot of parameters and characteristics of materials essentially change at nanoscale, we applied nanostructuring to a -Se in nanomultilayers, obtained by pulsed laser deposition. The enhancement of photo- and thermally-induced crystallization was observed in a-Se/aluminosilicate nanomultilayers due to the initially heterogeneous state of Se in such samples, in comparison with single a -Se layers.

Mots clés: chalcogenides; multilayers; Raman spectroscopy and scattering; atomic force microscopy (AFM); crystallisation

Domaines: Matériaux

István Csarnovics, Petr Nemec, Virginie Nazabal, Miklos Veres, Attila Csik, et al.. Stimulated structural changes of Se in nanolayered composite films. Materials Chemistry and Physics, 2014, 143 (2), pp.889-893. ⟨10.1016/j.matchemphys.2013.10.036⟩. ⟨hal-00966912⟩