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Received July 29, 2013 / published online February 17, 2014
Different sol-gel strategies based on functionalization of ZrO2:Eu microparticles with 1,10-phenanthroline (phen) and incorporation of colloidal Eu(phen)2(NO3)3 into zirconia have been used to obtain hybrid sol-gel composites with controlled optical properties. The process leads to materials with quantum yields of about 48 % monitoring the 615 nm emission line at 350 nm excitation. Excitation/luminescence spectroscopy, diffuse reflectance spectroscopy and X-ray diffraction have been used to characterize the hybrid zirconia composites.
Sol-Gel, Zirconia, Europium, Hybrid Composites
Z. Naturforsch. 2014, 69b, 224 – 230 doi:10.5560/ZNB.2014-3261