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

• Published in: Journal of solid state chemistry Vol. 171; no. 1-2; pp. 287 - 290
• Main Authors: Lima, Sergio Antonio Marques, Sigoli, Fernando Aparecido, Davolos, Marian Rosaly
• Format: Journal Article Conference Proceeding
• Language: English
• Published: San Diego, CA Elsevier Inc 15-02-2003; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Liquid phase epitaxy; deposition from liquid phases (melts, solutions, and surface layers on liquids); Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of specific thin films; Other semiconductors; Physics; Inorganic compounds; Display devices; Transition element compounds; Doping; Photoluminescence; Nanostructures; Infrared spectra; Experimental study; Heat treatments; Thin films; Nanoparticles; Europium additions; Zinc oxides; Phosphors; Optical properties; Chemical preparation; Ultraviolet visible spectrum; Optical materials; Dip coating; Wide band gap semiconductors; Growth from solution; Mosaic structure
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/S0022-4596(02)00178-0

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→7FJ (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.