Abstract
Bulk ceramics and thin films of yttrium niobate (YNbO4) were prepared and their electro-luminescence (EL) was measured as function of electric field. Thin films were prepared by RF-sputtering process. For the EL measurement of thin films, Nb-doped SrTiO3 single-crystal substrates were used as a bottom electrode and Al-doped ZnO transparent films were used as a top electrode. EL was observed by applying electric filed between the two electrodes. Central wavelength of the photo luminescence of the thin films was 400 nm. The EL intensity increased with applied field.
