Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 115, Issue -, Pages 767-771Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2013.06.111
Keywords
Photoluminescence; Phosphors; Energy transfer; Solar cells
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Funding
- National Science Foundation of China [51125005, U0934001]
- Chinese Ministry of Education [20100172110012]
- Department of Education of Guangdong Province [cxzd1011]
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Gd2MoO6:RE3+ (RE = Eu or Sm) and Gd2MoO6:Bi3+, RE3+ (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 Bi3+ ions into Gd2MoO6:RE3+ (RE = Eu or Sm) phosphors, the excitation bands of Eu3+ and Sm3+ ions are broadened and shifted to short wavelength, meanwhile, the emission intensity are enhanced obviously. The energy transfer from Bi3+ to the activators of Eu3+ or Sm3+ is observed and discussed. In addition, the process of ultraviolet light (250-400 nm) converted into visible light can be achieved by using Gd2MoO6:Bi3+, RE3+ (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). (C) 2013 Elsevier BM. All rights reserved.
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