Spectral Conversion From Ultraviolet to Near Infrared in Yb3+‐Doped Pyrovanadate Zn2V2O7 Particles |
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| Authors: | Ying Guan Yu Cheng Yanlin Huang Taiju Tsuboi Wei Huang Peiqing Cai Hyo Jin Seo |
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| Affiliation: | 1. College of Chemistry, Chemical Engineering and Materials Science, Soochow University, , Suzhou, 215123 China;2. Jiangsu‐Singapore Joint Research Center for Organic/Bio‐Electronics & Information Displays and Institute of Advanced Materials (IAM), Nanjing Tech University, , Nanjing, 211816 China;3. Department of Physics and Center for Marine‐Integrated Biomedical Technology, Pukyong National University, , Busan, 608‐737 Korea |
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| Abstract: | 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 1000 nm attributed to the 2F5/2 → 2F7/2 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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