title: The luminescence properties of Bi(3+) sensitized Gd2MoO6:RE(3+) (RE=Eu or Sm) phosphors for solar spectral conversion.
abstract: Gd2MoO6:RE(3+) (RE=Eu or Sm) and Gd2MoO6:Bi(3+), RE(3+) (RE=Eu or Sm) phosphors have been synthesized by combustion method. The samples are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), photoluminescence excitation (PLE) and photoluminescence (PL) spectra. By introducing Bi(3+) ions into Gd2MoO6:RE(3+) (RE=Eu or Sm) phosphors, the excitation bands of Eu(3+) and Sm(3+) ions are broadened and shifted to short wavelength, meanwhile, the emission intensity are enhanced obviously. The energy transfer from Bi(3+) to the activators of Eu(3+) or Sm(3+) is observed and discussed. In addition, the process of ultraviolet light (250-400nm) converted into visible light can be achieved by using Gd2MoO6:Bi(3+), RE(3+) (RE=Eu or Sm) phosphor. These phosphors can be a promising ultraviolet-absorbing luminescent converter to enhance the photoelectrical conversion efficiency of dye-sensitized solar cells (DSSCs).
authors.affiliation: State Key Lab of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, PR China.
authors.forename: M N
authors.initials: MN
authors.lastname: Huang
authors.forename: Y Y
authors.initials: YY
authors.lastname: Ma
authors.forename: X Y
authors.initials: XY
authors.lastname: Huang
authors.forename: S
authors.initials: S
authors.lastname: Ye
authors.forename: Q Y
authors.initials: QY
authors.lastname: Zhang
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D005063:Europium / Q000737:chemistry*; D049449:Luminescence; D049408:Luminescent Agents / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008958:Models, Molecular; D010087:Oxides / Q000737:chemistry*; D012493:Samarium / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013057:Spectrum Analysis; D013472:Sunlight; D013997:Time Factors; D014961:X-Ray Diffraction
chemical_list: D049408:Luminescent Agents; D010087:Oxides; D012493:Samarium; D005063:Europium; D001729:Bismuth
keywords: Energy transfer; Phosphors; Photoluminescence; Solar cells