Photoluminescence in amorphous YNiO3 and La0.5Nd0.5NiO3 systems

• Published in: Materials letters Vol. 56; no. 3; pp. 232 - 237
• Main Authors: SILVA, Z. R, FERNANDES, J. D. G, MELO, D. M. A, ALVES, C. JR, LEITE, E. R, PASKOCIMAS, C. A, LONGO, E, BERNARDI, M. I. B
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier 01-10-2002
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Other solid inorganic materials; Photoluminescence; Physics; Nickel oxides; Lanthanum oxides; Powders; Inorganic compounds; Ternary compounds; Transition element compounds; Neodymium oxides; Photoluminescence; XRD; Amorphous state; Ionic radius; Infrared spectra; Rare earth compounds; TGA; Chemical bonds; Fourier transform spectra; Property structure relationship; Quaternary compounds; Yttrium oxides
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/S0167-577X(02)00446-9

Photoluminescence (PL) at room temperature has been achieved in amorphous powders of the YNiO3 and La0.5Nd0.5NiO3 systems. They were prepared by the polymeric precursor method. The energy position of maximum PL emission and the intensity showed dependence on the rare earth element (RE) size. The RE small size suggests increase of non-bridging oxygens in the amorphous NiO6 network. These results support the relationship between photoluminescence and structure in Ni3+/Ni2+-based amorphous materials. 10 refs.