Conversion of Colloidal ZnO−WO3 Heteroaggregates into Strongly Blue Luminescing ZnWO4 Xerogels and Films

• Published in: Chemistry of materials Vol. 10; no. 1; pp. 304 - 310
• Main Authors: Bonanni, M, Spanhel, L, Lerch, M, Füglein, E, Müller, G, Jermann, F
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 19.01.1998
• Subjects: Chemistry; Colloidal gels. Colloidal sols; Colloidal state and disperse state; Exact sciences and technology; General and physical chemistry; Ternary compound; Scanning electron microscopy; Binary compound; Transition metal Compounds; Photoluminescence; Tungsten Oxides; Zinc Oxides; Experimental study; Powder; Thin film; Infrared spectrometry; Aggregate; Xerogel; Colloid particle; Colloidal sol

The colloidal synthesis of ZnO−WO3 heteroaggregates composed of 3−5 nm particles is presented. These sols can be used to prepare nanocrystalline ZnWO4 xerogels, powders, and thin films with strong blue fluorescence (quantum yield between 25 and 50% at room temperature). The conversion of the precurs...