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Study of the new β-In2S3 containing Na thin films Part I: Synthesis and structural characterization of the material by N. Barreau; J.C. Bernède; C. Deudon; L. Brohan; S. Marsillac is a Engineering article available to read on EtoBox.

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Thin films of In 2 S 3 containing different quantity of sodium have been synthesized by annealing at 4001C of structures composed of thin indium, sulphur and indium fluoride layers sequentially evaporated on sodium-free glass substrates. The thin films obtained have been studied by X-ray diffraction (XRD), electronic microprobe analysis and X-ray photoelectron spectroscopy. They exhibit a b-In 2 S 3 -like structure and the sodium atoms are homogeneously distributed in the whole films. In order to determine the structure of the material and particularly the position of the sodium atoms in the b-In 2 S 3 spinel matrix, single crystal of the same compound has been synthesized and then studied by XRD and transmission electron microscopy. These studies have shown that the materials obtained can be described by the general formulation [In 16 ] Oh [In 5.33Àx Na 3x & 2.66À2x ] Td S 32 (0pxp1:33), where Oh and Td, respectively, represent the octahedral and tetrahedral sites of the spinel structure. In thin films form, the maximum of sodium which can be introduced in the crystalline matrix has been shown to correspond to x 1⁄4 0:9; which corresponds to the formula [In 16 ] Oh [In 4.4 -Na 2.7

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Author

N. Barreau; J.C. Bernède; C. Deudon; L. Brohan; S. Marsillac

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-0248)

Published

2002

Language

EN

Field

Engineering (Physical Sciences)