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Electrospinning Derived One-Dimensional LaOCl: Ln3+ (Ln = Eu/Sm, Tb, Tm) Nanofibers, Nanotubes and Microbelts with Multicolor-Tunable Emission Properties

Authors

  • Guogang Li,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P. R. China) and Graduate School of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
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  • Zhiyao Hou,

    1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
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  • Chong Peng,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P. R. China) and Graduate School of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
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  • Wenxin Wang,

    1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, P. R. China
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  • Ziyong Cheng,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P. R. China) and Graduate School of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
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  • Chunxia Li,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P. R. China) and Graduate School of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
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  • Hongzhou Lian,

    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P. R. China) and Graduate School of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
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  • Jun Lin

    Corresponding author
    1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P. R. China) and Graduate School of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
    • State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P. R. China) and Graduate School of the Chinese Academy of Sciences, Beijing, 100049, P. R. China.
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Abstract

One-dimensional LaOCl: Ln3+ (Ln3+ = Eu3+/Sm3+, Tb3+, Tm3+) nanofibers, nanotubes, and quasi-1D microbelts are successfully prepared by a sol–gel/electrospinning process. XRD, FT-IR, SEM, TEM, as well as photoluminescence (PL) and cathodoluminescecne (CL) spectra are used to characterize the resulting samples. Through a heat treatment process at high temperature, the as-prepared samples are well-crystallized with the tetragonal structure of LaOCl. Under ultraviolet radiation and low-voltage electron beam excitation, the LaOCl: Eu3+, LaOCl:Sm3+, LaOCl: Tb3+, and LaOCl: Tm3+ samples give the characteristic transitions of Eu3+ (5D0, 1, 27F0, 1, 2, 3, 4), Sm3+ (4G5/26H5/2, 7/2, 9/2), Tb3+ (5D3, 47F2, 3, 4, 5, 6), and Tm3+ (1D2, 1G43F4, 3H6), respectively. Moreover, there exists simultaneous luminescence of Tb3+, Tm3+, Eu3+, or Sm3+ individually when codoping them in the single-phase LaOCl host (for example, LaOCl: Tb3+, Eu3+/Sm3+; LaOCl: Tm3+, Eu3+/Sm3+; LaOCl: Tb3+, Tm3+, Eu3+/Sm3+ systems), which is beneficial to tune the emission colors. Under low-voltage electron beam excitation (1–5 kV), a variety of colors can be efficiently adjusted in a wide triangle region enveloped by three CIE chromaticity coordinate points [LaOCl:Eu3+, (x = 0.6039, y = 0.3796); LaOCl: Tb3+, (x = 0.2452, y = 0.5236); LaOCl: Tm3+, (x = 0.1456, y = 0.0702)] for mono- and co-doped LaOCl: Ln3+ (Eu3+, Sm3+, Tb3+, Tm3+) samples, making these materials have potential applications in field-emission display devices.

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