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Issue 6, 2012
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Low-temperature preparation of monodispersed Eu-doped CaTiO3 LED phosphors with controllable morphologies

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Abstract

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 5D07F2 (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.

Graphical abstract: Low-temperature preparation of monodispersed Eu-doped CaTiO3 LED phosphors with controllable morphologies

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Publication details

The article was received on 14 Oct 2011, accepted on 25 Nov 2011 and first published on 12 Jan 2012


Article type: Paper
DOI: 10.1039/C2CE06366B
Citation: CrystEngComm, 2012,14, 2094-2099
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    Low-temperature preparation of monodispersed Eu-doped CaTiO3 LED phosphors with controllable morphologies

    B. Wu, Q. Zhang, H. Wang and Y. Li, CrystEngComm, 2012, 14, 2094
    DOI: 10.1039/C2CE06366B

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