Preparation and chemical characterization of neodymium-doped molybdenum oxide fims grown using spray pyrolysis

• Autores: J. E. Alfonso, L. C. Moreno
• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 60, Nº. 2, 2014, págs. 114-118
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • We studied the crystallinity, morphology, and surface composition of Nd-doped molybdenum oxide films grown on glass slides throught spray pyrolysis. After fabrication, the films are subjected to thermal treatment in oxygen for periods ranging from 2 to 20 hours. The films were structurally characterized through X-ray diffraction (XRD), their bulk chemical composition was determined using Energy-Dispersive X-ray analysis (EDX), and their surface composition was determined using X-ray Photoelectron Spectroscopy (XPS). The XRD results show that the films obtained from different dissolution volumes and at substrate temperature of 300ºC exhibit the characteristics of the oxygen-deficient molybdenum trioxide Mo_(9)O_(26) phase. The films subjected to different thermal treatments exhibit a minture of Mo_(9)O_(26) and Mo_(17)O_(47) phases. EDX study shows the energy belonging to the L line od Nd. Finally, films doped with Nd and subjected to a thermal treatment of 20h were analyzed through XPS, showing the binding energies at the crystalline lattice correspond to Nd_(2) (MoO_(4))_(3) and Md_(2)Mo_(2)O_(7).