期刊
CRYSTENGCOMM
卷 14, 期 6, 页码 2094-2099出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce06366b
关键词
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资金
- Shanghai Municipal Education Commission [07SG37]
- Natural Science Foundation of China [51072034, 51172042]
- Shanghai Leading Academic Discipline Project [B603]
- Cultivation Fund of the Key Scientific and Technical Innovation Project [708039]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Program of Introducing Talents of Discipline to Universities [111-2-04]
A novel solvothermal route has been developed to synthesize mondispersed and different mophologies of Eu-doped CaTiO3 phosphors including magic-column spherical, magic-cube spherical and polyhedral shaped, using a mixture of ethylene glycol (EG) and ethylenediamine (EDA). By tuning the solvent ratio, the method exhibited excellent control over the morphology of CaTiO3:Eu3+, and magic-column spherical phosphors have higher luminous intensities than magic-cube spherical and polyhedral shaped phosphors. The synthesized phosphors had higher luminous intensity and better packing properties than those obtained by a solid-state method. The phosphors showed strong red emissions, corresponding to the D-5(0) -> F-7(2) (617.6 nm) transition of Eu3+ under near-ultraviolet excitation (398.4 nm). X-ray diffraction (XRD), scanning electron microscope (SEM) and photoluminescent (PL) analyses were used to characterize the structure, morphology and luminous performance of CaTiO3: Eu3+ phosphors.
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