Self-organized growth of germanium nanocolumns - Kölner UniversitätsPublikationsServer

Mussabek, G. K., Yermukhamed, D., Dikhanbayev, K. K., Schleusener, A., Mathur, S. and Sivakov, V. (2017). Self-organized growth of germanium nanocolumns. Mater. Res. Express, 4 (3). BRISTOL: IOP PUBLISHING LTD. ISSN 2053-1591

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DOI:10.1088/2053-1591/aa5ed6

Abstract

The crystalline germanium nanostructures were obtained on a silicon surface by the chemical vapor deposition technique using a germanium (IV) iso-propoxide ([Ge((OPr)-Pr-i)(4)]) metalorganic precursor as a germanium source. As was observed, the one-dimensional (1D) germanium nanostructures on the silicon surface form without using a metal catalyst, meaning that the formation of 1D nanostructures is based not on a vapor-liquid-solid (VLS) growth mechanism, but on self-organization processes which take place on the silicon surfaces during the CVD process of germanium iso-propoxide pyrolysis. Our observation suggests that the non-catalytic growth of germanium nanocolumns is strongly dependent on the CVD process temperature. The germanium phase composition and morphology have been investigated by x-ray diffraction (XRD) and x-ray photoelectron spectroscopy (XPS), and high resolution scanning electron microscopy (HRSEM), respectively. Our results provide a new way to grow 1D germanium nanostructures without contamination by a catalyst, which the vapor-liquid-solid growth mechanism is known to cause, allowing for the application of such materials in micro-and optoelectronics.

Item Type:

Journal Article

Creators:

Creators	Email	ORCID	ORCID Put Code
Mussabek, G. K.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Yermukhamed, D.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Dikhanbayev, K. K.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Schleusener, A.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Mathur, S.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Sivakov, V.	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED