Photoluminescence properties of the red phosphor YInGe₂O₇:Eu³⁺

• DOI: 10.4314/bcse.v27i2.18
• Publication Date: 2013-05-21T08:30:12Z
• Authors: J. Han; L. Zhou; Q. Pang; H. Yang
• Keywords: Chromaticity

Eu3+-doped YInGe2O7 phosphors were prepared via a solid-state reaction with metal oxides and their excitation emission spectra measured at room temperature. The results showed that pure-phase could be obtained after firing 1250 °C. maximum photoluminescence intensity of YInGe2O7:Eu3+ phosphor was achieved when doped 40 mol% Eu3+ ions. Compared Y2O2S:0.05Eu3+, the Y0.60InGe2O7:Eu3+0.40 intense red-emission lines 616 nm, corresponding to forced electric dipole 5D0 → 7F2 transitions under 394 nm light excitation. International Commission on Illumination chromaticity coordinates (x = 0.644, y 0.356) close National Television Standard Committee standard values. As such, synthesized may find applications in near ultraviolet InGaN chip-based white light-emitting diodes. KEY WORDS: Optical materials, X-Ray diffraction, Luminescence, Solid state Bull. Chem. Soc. Ethiop. 2013, 27(2), 315-319.DOI: http://dx.doi.org/10.4314/bcse.v27i2.18