Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 97, Issue 10, Pages 3202-3207Publisher
WILEY
DOI: 10.1111/jace.13107
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Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2013R1A1A2009154]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), China
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Yb3+-doped Zn2V2O7 particles were synthesized via the Pechini method. The crystal structure and morphology of the polycrystalline samples were investigated by X-ray powder diffraction and scanning electron microscopy measurements, respectively. The reflectance spectrum, photoluminescence excitation, emission spectra, and the absolute quantum efficiency of the IR emission (900-1100) were measured. The intense near-IR emission around 1000nm attributed to the F-2(5/2) F-2(7/2) transition of Yb3+ was observed under the excitation of ultraviolet light in the Yb3+-doped pyrovanadate. The efficient energy transfer from VO4 groups into Yb3+ ions was confirmed by the optical spectra and fluorescent lifetime measurements. These results demonstrate that the Yb3+-doped pyrovanadate particles are promising materials for spectral conversion from visible sunlight to near-infrared emission and it may have potential application for spectral convertor to enhance the photoelectric conversion efficiency of c-Si solar cells.
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