Zinc stannate by reactive laser sintering

Viktor Mackert*, Julia S. Gebauer, Christian Notthoff, Markus Winterer

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    A novel procedure for producing polycrystalline zinc stannate (Zn 2 SnO 4 , ZTO) films is presented in this paper. Nanocrystals of zinc oxide (ZnO) and tin dioxide (SnO 2 ) are prepared by chemical vapor synthesis (CVS) and processed into stable aqueous dispersions including mixed colloids. These colloids are transformed into nanostructured films via electrophoretic deposition where the mixed colloid forms a homogeneous, nanoscaled composite. Ultraviolet (UV) laser sintering of these codeposited ZnO-SnO 2 nanocrystals generates the inverse cubic spinel Zn 2 SnO 4 phase by chemical reaction on the area of interest. The effects of UV laser sintering at a wavelength of 325 nm on the nanoscaled microstructure of pure deposited films are investigated by variation of laser power and scanning speed. The microstructure of composite films is compared to a film obtained by classical reactive sintering in a furnace. High-resolution scanning electron microscopy and energy dispersive X-ray spectroscopy are used to investigate film morphology and chemical composition. Structural characterization is performed by X-ray diffraction.

    Original languageEnglish
    Pages (from-to)1174-1180
    Number of pages7
    JournalApplied Surface Science
    Volume457
    DOIs
    Publication statusPublished - 1 Nov 2018

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