title: NIR to visible frequency upconversion in Er3+ and Yb3+ co-doped BaZrO3 phosphor.
abstract: Phosphor powders of Yb(3+) co-doped BaZrO3:Er(3+) have been prepared by the urea combustion route. The formation of single-phase BaZrO3:Er(3+) and BaZrO3:Er(3+),Yb(3+) was confirmed by X-ray powder diffraction (XRD). Green and red luminescence along with a weaker blue emission is observed upon excitation at ~978 nm with a diode laser. These emissions are caused by frequency upconversion in the Er(3+)-doped BaZrO3 (BZO) phosphor. Both the green and red upconversion emissions of the Er(3+) are enhanced by about ~3 and ~43 times respectively when triply ionized ytterbium is incorporated as a co-dopant. The frequency upconversion processes responsible for the blue, green and red emissions are discussed on the basis of the experimental data.
authors: Department of Chemical Engineering, Konkuk University, Seoul 143-701, Republic of Korea. vijayjiin2006@yahoo.com
authors: Vijay
authors: V
authors: Singh
authors: Vineet Kumar
authors: VK
authors: Rai
authors: Katharina
authors: K
authors: Al-Shamery
authors: Markus
authors: M
authors: Haase
authors: Sang Hwan
authors: SH
authors: Kim
mesh_terms: D000042:Absorption; D017609:Barium Compounds / Q000737:chemistry*; D004871:Erbium / Q000737:chemistry*; D049449:Luminescence; D010087:Oxides / Q000737:chemistry*; D011208:Powders; D019265:Spectroscopy, Near-Infrared; D013816:Thermodynamics; D014961:X-Ray Diffraction; D015018:Ytterbium / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D017609:Barium Compounds; D010087:Oxides; D011208:Powders; D004871:Erbium; D015040:Zirconium; D015018:Ytterbium