Pechini's solution as precursor for Eu(III)-containing ZnO films

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• 作者：Lima ; Sergio Antonio Marques ; Sigoli ; Fernando Aparecido ; Davolos ; Marian Rosaly
• 刊名：Journal of Solid State Chemistry
• 出版年：2003
• 出版时间：February, 15 - March, 1 2003
• 年：2003
• 卷：171
• 期：1-2
• 页码：287-290
• 全文大小：647 K

文摘

The flat-panel-display's (FPD) market and demand for highly efficient and colored luminescent films have been growing quickly. In this work, thin films were obtained from Pechini's solution by dip-coating. The green films were thermally treated at 873K in order to get ZnO:Eu 1at % thin film. A Schott^® glass plate hydrothermally treated was used as substrate. The films have a mosaic shaped feature that was observed by optical microscopy. That feature is a result of substrate thermal treatment. The film deposition decreases the substrate transmittance in the visible range. When the ⁷F₀→⁵L₆ (392nm) Eu³⁺ transition is excited, it is possible to detect emission from ⁵D₀→⁷F_J (J=1, 2, 3 and 4) transitions. The ⁵D₀→⁷F₂ transition is also observed by using ZnO excitation wavelengths indicating energy transfer from ZnO to Eu³⁺ ion.