Volatile, monomeric, and fluorine-free precursors for the metal organic chemical vapor deposition of zinc oxide

Daniela Bekermann, Detlef Rogalla, Hans Werner Becker, Manuela Winter, Roland A. Fischer, Anjana Devi

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

38 Zitate (Scopus)

Abstract

Two new bis(ketoiminato)zinc(II) compounds that show excellent precursor properties for the chemical vapor deposition (CVD) of zinc oxide materials are presented. The synthesis of the ketoiminato zinc complexes [Zn{[(CH 2)x-OCH3]NC(CH3)=C(H)C(CH 3)=O}2] (1: x = 2; 2: x = 3) is straightforward and can easily be scaled up. Compounds 1 and 2 were analyzed by 1H and 13C NMR spectroscopy, elemental analysis, single-crystal X-ray diffraction analysis, and electron ionization mass spectrometry. The compounds exist as monomers with a distorted tetrahedral zinc center. Thermogravimetric studies, sublimation, and solubility tests reveal very promising properties for metal-organic CVD related applications. Preliminary metal-organic CVD experiments with the use of compound 1 were performed as a screening for the suitability of the new bis(ketoiminato)zinc complexes as precursors for the growth of ZnO thin films in the presence of oxygen. The films were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive analysis of X-ray, and Rutherford backscattering measurements. The as-deposited ZnO films were stoichiometric; the crystalline films exhibited strong preferred orientation along the c-axis.

OriginalspracheEnglisch
Seiten (von - bis)1366-1372
Seitenumfang7
FachzeitschriftEuropean Journal of Inorganic Chemistry
Ausgabenummer9
DOIs
PublikationsstatusVeröffentlicht - 2010
Extern publiziertJa

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