title: pH controlled Ho³⁺-Yb³⁺ codoped Y₂O₃ nanowires for display devices.
abstract: The wire like structure with particle size in the nanometer range of Ho(3+)-Yb(3+) codoped Y2O3 phosphors have been synthesized through hydrothermal synthesis route by controlling the pH value. The Field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) analysis of the synthesized phosphor powders have been studied which confirms the formation of nanowires in the prepared materials and the formation of proper crystalline structure respectively. The frequency upconversion emission spectra under 980 nm excitation have been recorded and an efficient green emission has been observed. The excitation energy corresponding to the NIR photon seems to be fully utilized for the emission lying in the green region. The Fourier transform infrared (FTIR) spectroscopic analysis for existence of the impurities in the developed material has also been performed. The experimental observation proves the utility of the prepared material in the display devices and diagnosis purposes.
authors.affiliation: Laser and Spectroscopy Laboratory, Department of Applied Physics, Indian School of Mines, Dhanbad 826004, Jharkhand, India.
authors.forename: Riya
authors.initials: R
authors.lastname: Dey
authors.affiliation: Laser and Spectroscopy Laboratory, Department of Applied Physics, Indian School of Mines, Dhanbad 826004, Jharkhand, India. Electronic address: vineetkrrai@yahoo.co.in.
authors.forename: Vineet Kumar
authors.initials: VK
authors.lastname: Rai
mesh_terms: D006695:Holmium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D049408:Luminescent Agents / Q000737:chemistry*; D008163:Luminescent Measurements; D008855:Microscopy, Electron, Scanning / Q000295:instrumentation*; D053770:Nanowires / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared / Q000295:instrumentation; D014961:X-Ray Diffraction / Q000295:instrumentation*; D015018:Ytterbium / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
chemical_list: D049408:Luminescent Agents; D015019:Yttrium; D015018:Ytterbium; D006695:Holmium; C091417:yttria
keywords: Electron microscopy; Luminescence; Optical materials; X-ray diffraction