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Near-ultraviolet excited Eu3+ doped KSrY(BO3)2 phosphors for solid-state lighting: synthesis, structure and photoluminescent properties

  • Yongsheng Shi
  • Zan Wang
  • Qingju Ning
  • Dan Wu
  • Bo Quan
Article
  • 3 Downloads

Abstract

A series of KSrY(BO3)2: Eu3+ phosphors have been prepared by the conventional solid-state reaction method for the first time and characterized using X-ray diffraction, UV–Vis absorbance, as well as Photoluminescence techniques. The XRD results indicated that all prepared samples could be attributable to the monoclinic structure in space group P21/m. The combination of first-principles calculations with UV–Vis absorption spectra confirmed the direct band gap characteristic of the phosphors. Upon 394 nm excitation, the 5D07F1 transition of the emission spectra dominated when the Eu3+ ions concentration was low, but the 5D07F2 transition rapidly increased and dominated with the doping concentration increasing. When the concentration of Eu3+ ions was 40%, the phosphors has the best luminescence and its CIE chromaticity coordinates were located at (0.6399, 0.3584), the color purity was as high as 99.9%. In addition, correlated color temperature, decay properties and Judd–Ofelt (J–O) theory were discussed in detail.

Notes

Acknowledgements

This work is financially supported by the Program for Tackling Key Problems of Science and Technology Department of Shaanxi province (2015GY173).

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Elecrical and Information EngineeringShaanxi University of Science and TechnologyXi’anPeople’s Republic of China
  2. 2.College of Materials Science and EngineeringShaanxi University of Science and TechnologyXi’anPeople’s Republic of China

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