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Rambaran MA, Gorzsás A, Holmboe M, Ohlin CA
Dalton Trans 50 (44) 16030-16038 [2021-11-16; online 2021-11-16]
Niobium oxide thin films have been prepared by spin-coating aqueous solutions of tetramethylammonium salts of the isostructural polyoxometalate clusters [Nb10O28]6-, [TiNb9O28]7- and [Ti2Nb8O28]8- onto silicon wafers, and annealing them. The [Nb10O28]6- cluster yields films of Nb2O5 in the orthorhombic and monoclinic crystal phases when annealed at 800 °C and 1000 °C, respectively, whereas the [TiNb9O28]7- and [Ti2Nb8O28]8- clusters yield the monoclinic crystal phases of Ti2Nb12O29 and TiNb2O7 (titanium-niobium oxides) in different ratios. We also demonstrate a protocol for depositing successive layers of metal oxide films. Finally, we explore factors affecting the roughness of the films.
Integrated Microscopy Technologies Umeå [Service]
PubMed 34613326
DOI 10.1039/d1dt03116c
Crossref 10.1039/d1dt03116c