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Applied Physics A

, 125:141 | Cite as

The novel red persistent phosphor CaS:Yb2+, Cl potentially applicable in AC LED

  • Yunfei Zhuang
  • Tianyi Li
  • Peng Yuan
  • Yunqian Li
  • Yanmin YangEmail author
  • Zhiping YangEmail author
Article
  • 24 Downloads

Abstract

In this work, a novel CaS:Yb2+, Cl Long Persistent Luminescence (LPL) phosphor was prepared by a solid-state reaction method in carbon reduction atmosphere. The Cl ion was introduced to sensitize the luminescence of Yb2+ ion. The crystal structure was characterized by X-ray diffraction (XRD). The Photoluminescence (PL) and Photo-Stimulated Luminescence (PSL) properties of the as-prepared phosphors under the mercury lamp were systematically investigated. The bright red long afterglow in the range of 580–750 nm with a maximum at 650 nm has the high color purity and can last 5 min. It is worth mentioned that, in this phosphor, the attenuation of the afterglow luminescence is little in the first second. The CaS:Yb2+, Cl with a luminescent center at 650 nm can be used to increase the color saturation of white alternating current (AC) LEDs by coating phosphor on a blue AC LED chip.

Notes

Acknowledgements

This work was supported by the National Science Foundation of China (No. 11474083), the Natural Science Foundation of Hebei province (No. A2015201192), the Fundamental Research Funds for the Central Universities (No. 3142013019), the Science and Technology Research and the Development Plan of Langfang (No. 2018011006).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Hebei Key Lab of Optic-electronic Information and Materials, College of Physics Science and TechnologyHebei UniversityBaodingChina
  2. 2.College of ScienceNorth China Institute of Science and TechnologySanheChina

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