Photoluminescent CaCu3Ti4O12-Based Thin Films Synthesized by a Sol-Gel Method
| Autor: | Elson Longo, José Arana Varela, Ednan Joanni, Paulo Roberto Bueno, Mario Cilense, J. W. M. Espinosa, R. Tararam, Rodrigo Parra |
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| Rok vydání: | 2008 |
| Předmět: |
Photoluminescence
Materials science Físico-Química Ciencia de los Polímeros Electroquímica Resolution (electron density) Ciencias Químicas Analytical chemistry Mineralogy Laser law.invention law Vacancy defect Excited state Materials Chemistry Ceramics and Composites Particle size Thin film CIENCIAS NATURALES Y EXACTAS Sol-gel |
| Zdroj: | Journal of the American Ceramic Society. 91:4162-4164 |
| ISSN: | 1551-2916 0002-7820 |
| Popis: | Results on the characterization of photoluminescent CaCu3Ti 4O12-based films, prepared from a sol-gel precursor and heat treated at 700°C, are reported for the first time. The samples showed two emission bands at 554 and 800 nm when excited with a 488 nm Ar-ion laser. The photoluminescent emission measured at room temperature in thin films was attributed to complex vacancy clusters. The films consisted of CaCu 3Ti4O12 with traces of TiO2, CuO, and CaTiO3 and showed porous structures with an average particle size of 50 nm under atomic force microscopy resolution. Fil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Joanni, Ednan. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil Fil: Espinosa, José W. M.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil Fil: Tararam, Ronald. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil Fil: Cilense, Mário. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil Fil: Bueno, Paulo R.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil Fil: Varela, José A.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil Fil: Longo, Elson. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil |
| Databáze: | OpenAIRE |
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