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  • Received: Dec. 30, 2018

    Accepted: Feb. 22, 2019

    Posted: May. 23, 2019

    Published Online: May. 23, 2019

    The Author Email: Jia Zhang (zhangjianew@126.com), Jian Lu (lj6805@163.com)

    DOI: 10.3788/COL201917.051602

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    Ju Cheng, Jia Zhang, Jian Lu, Xintian Bian, Hongchao Zhang, Zhonghua Shen, Xiaowu Ni, Pengcheng Ma, Jin Shi. Photoluminescence properties of Ca4La6(SiO4)4(PO4)2O2-based phosphors for wLEDs[J]. Chinese Optics Letters, 2019, 17(5): 051602

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Chinese Optics Letters, Vol. 17, Issue 5, 051602 (2019)

Photoluminescence properties of Ca4La6(SiO4)4(PO4)2O2-based phosphors for wLEDs

Ju Cheng1,2, Jia Zhang1,*, Jian Lu2,**, Xintian Bian1, Hongchao Zhang2, Zhonghua Shen2, Xiaowu Ni2, Pengcheng Ma1, and Jin Shi1

Author Affiliations

  • 1School of Physics and Electronic Electrical Engineering, Huaiyin Normal University, Huaian 223001, China
  • 2School of Science, Nanjing University of Science and Technology, Nanjing 210094, China

Abstract

The apatite compound Ca4La6(SiO4)4(PO4)2O2 (CLSPO) was explored as the host material for phosphors used in white light-emitting diodes (wLEDs). The crystal structure of the CLSPO host prepared by the solid-state reaction method was investigated with Rietveld refinement. The rare earth ions (Eu3+/ Tb3+/Ce3+, Tb3+/Tb3+, Mn2+) activated CLSPO phosphors were synthesized, and their photoluminescence properties, quantum yields, as well as thermal stabilities, were studied. Under near-ultraviolet excitations, the Eu3+ and Tb3+-doped CLSPO compounds exhibited red and green emissions with high luminescence efficiencies. Besides, tunable emissions from green to orange were obtained by introducing Mn2+ ions into the Tb3+-doped CLSPO samples. The results showed that the phosphors studied may have potential applications for wLEDs.

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