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Texture of Polycrystalline MoSx Thin Films Magnetron Sputtered from a Metallic Target in Ar-H2S Atmospheres

Published online by Cambridge University Press:  01 February 2011

Volkmar Weiß ,
Rainald Mientus  and
Klaus Ellmer
Volkmar Weiß
Affiliation:
Hahn-Meitner-Institut Berlin, Dept. Solare Energetik, Glienicker Str. 100, D-14109 Berlin, Germany.
Rainald Mientus
Affiliation:
Optotransmitter-Umweltschutz-Technologie e.V., Köpenicker Str. 325b, D-12555 Berlin, Germany.
Klaus Ellmer
Affiliation:
Hahn-Meitner-Institut Berlin, Dept. Solare Energetik, Glienicker Str. 100, D-14109 Berlin, Germany.
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Abstract

The textured film growth of polycrystalline MoSx films on Si substrates deposited by reactive magnetron sputtering with H2S from a molybdenum target has been investigated. Over a wide range of gas flow ratios FH2S/(FH2S+FAr) from 1% to 75% only x-ray diffraction patterns of randomly stacked S-Mo-S layers of the MoS2 phase were detected which indicates turbostratic growth of the van-der-Waals layers comparable to the growth of graphite at low temperatures. The extended distance of the c-lattice planes depends on the sputtering conditions and can also be explained by the turbostratic model. Low deposition rates and high substrate temperatures improved the quality of the films towards the requested (001) texture and low c-lattice strain. The results from the in situ-energy dispersive x-ray diffraction (EDXRD) technique using synchrotron radiation allowed kinetic calculations of the time dependent behaviour of the peak area of the (0 0 21) Bragg reflection signals according to the Johnson-Mehl-Avrami model. They revealed that the grain growth is restricted in dimensions if a completed nucleation is assumed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 721: Symposia E/J – Texture and Microstructure in Electronic and Magnetic Films – Nanostructural Magnetic Materials for Data Storage , 2002 , J5.3
Copyright
Copyright © Materials Research Society 2002

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