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Spectral Conversion From Ultraviolet to Near Infrared in Yb 3+ ‐Doped Pyrovanadate Zn 2 V 2 O 7 Particles
Author(s) -
Guan Ying,
Cheng Yu,
Huang Yanlin,
Tsuboi Taiju,
Huang Wei,
Cai Peiqing,
Seo Hyo Jin
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13107
Subject(s) - photoluminescence , materials science , doping , analytical chemistry (journal) , ultraviolet , infrared , quantum efficiency , crystallite , scanning electron microscope , ion , ytterbium , crystal (programming language) , emission spectrum , fluorescence , phosphor , spectral line , optoelectronics , optics , chemistry , physics , organic chemistry , chromatography , computer science , metallurgy , composite material , programming language , astronomy
Yb 3+ ‐doped Zn 2 V 2 O 7 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 1000 nm attributed to the 2 F 5/2 → 2 F 7/2 transition of Yb 3+ was observed under the excitation of ultraviolet light in the Yb 3+ ‐doped pyrovanadate. The efficient energy transfer from VO 4 groups into Yb 3+ ions was confirmed by the optical spectra and fluorescent lifetime measurements. These results demonstrate that the Yb 3+ ‐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.