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Issue 8, 2002
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Functional homo- and heterometallic alkoxides as precursors for sol–gel routes to transparent ZnGa2O4 coatings

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Abstract

New homo- and heterometallic [M(OR)3]m and [ZnM2(OR)8]m species (M = Al, Ga; R = C2H4OMe, C2H4NMe2) have been prepared and characterised by elemental analysis, electrospray mass spectrometry, FT-IR and multinuclear NMR. Hydrolyses of the heterometallic compounds were investigated and the particle sizes were determined. The thermal behaviour of the hydrolysed products was studied by TGA/DTA and the nature of the phases was analysed by powder X-ray diffraction. Various sol–gel processing parameters were studied in order to stabilise nanosized colloidal suspensions for access to thin films by spin coating. [ZnGa2(OC2H4OMe)8]2 was the best candidate for sol–gel processing, allowing crystalline ZnGa2O4 solids to be obtained at 300 °C. Films, obtained on glass and MgO substrates, were transparent (>95%) and characterised by UV-visible and X-ray photoelectron spectroscopies, tapping mode AFM, SEM, EDX and X-ray diffraction.

Graphical abstract: Functional homo- and heterometallic alkoxides as precursors for sol–gel routes to transparent ZnGa2O4 coatings

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Publication details

The article was received on 05 Apr 2002, accepted on 22 May 2002 and first published on 28 Jun 2002


Article type: Paper
DOI: 10.1039/B203346A
Citation: J. Mater. Chem., 2002,12, 2519-2524
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    Functional homo- and heterometallic alkoxides as precursors for sol–gel routes to transparent ZnGa2O4 coatings

    S. Daniele, D. Tcheboukov and L. G. H. Pfalzgraf, J. Mater. Chem., 2002, 12, 2519
    DOI: 10.1039/B203346A

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