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Li2SrSiO4:Eu2+ phosphor prepared by the Pechini method and its application in white light emitting diode

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Abstract

Eu2+-doped Li2SrSiO4 phosphors were prepared by two different synthesis processes, the Pechini sol-gel route and solid-state reaction (SSR) method. Their morphology, crystal structure, and luminescence properties have been characterized. Li2SrSiO4:Eu2+ phosphors show broad and intensive excitation in the range of 390–480 nm and emit yellow-orange light extending from 500 to 700 nm. The luminescence efficiency of Li2SrSiO4: Eu2+ phosphors synthesized through the Pechini route is much better than that of phosphors prepared by solid-state reaction method. The application of phosphors from the Pechini route in white light emitting diodes (LEDs) has been investigated. The Commission Internationale de L’Eclairage (CIE) chromaticity coordinates and the correlated color temperature of these white LEDs have been calculated; they are comparable to corresponding values of commercial Y3Al5O12:Ce3+ converted white LEDs.

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Acknowledgments

We thank Prof. Xiaomei Feng and Mr. Sidong Lei for valuable discussion on the experimental data. We also thank Mr. Shenqiang Li from the Quantai Science and Technology Development Co. Ltd., Nanjing, China, for his help with LED packaging.

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Authors and Affiliations

  1. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People’s Republic of China

    Hong He, Renli Fu, Xiufeng Song, Zhengwei Pan & Xinran Zhao

  2. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, People’s Republic of China

    Hong He, Hai Wang & Yongge Cao

  3. Eco-Materials and Renewable Energy Research Center (ERERC), Department of Physics & National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, People’s Republic of China

    Xueliang Zhang

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  1. Hong He
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Correspondence to Renli Fu.

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He, H., Fu, R., Wang, H. et al. Li2SrSiO4:Eu2+ phosphor prepared by the Pechini method and its application in white light emitting diode. Journal of Materials Research 23, 3288–3294 (2008). https://doi.org/10.1557/JMR.2008.0394

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  • DOI: https://doi.org/10.1557/JMR.2008.0394

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