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Shape controlled synthesis of CaMoO4 thin films and their photoluminescence property |
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| Authors: | Ana Paula de Azevedo Marques Valeria M Longo Paulo S Pizani José Arana Varela |
| Institution: | a Laboratório Interdisciplinar de Eletroquímica e Cerâmica, Departamento de Química, Centro Multidisciplinar de Desenvolvimento de Materiais Cerâmicos, Universidade Federal de São Carlos, C. Postal 676, 13565-905 São Carlos, SP, Brazil b Laboratório de Análise Térmica e Materiais, Departamento de Química, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN, Brazil c Laboratório de Semicondutores, Departamento de Física, Universidade Federal de São Carlos, C. Postal 676, 13565-905 São Carlos, SP, Brazil d CMDMC, LIEC, Instituto de Química, Universidade Estadual Paulista, 14801-907 Araraquara, SP, Brazil |
| Abstract: | CaMoO4 (CMO) disordered and ordered thin films were prepared by the complex polymerization method (CPM). The films were annealed at different temperatures and time in a conventional resistive furnace (RF) and in a microwave (MW) oven. The microstructure and surface morphology of the structure were monitored by atomic force microscopy (AFM) and high-resolution scanning electron microscopy (HRSEM). Order and disorder were characterized by X-ray diffraction (XRD) and optical reflectance. A strong photoluminescence (PL) emission was observed in the disordered thin films and was attributed to complex cluster vacancies. The experimental results were compared with density functional and Hartree-Fock calculations. |
| Keywords: | CaMoO4 Photoluminescence Thin films Complex polymerization method Ordered-disordered ab initio calculations |
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