Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (6): 20220029.doi: 10.7503/cjcu20220029

• Articles:Inorganix Chemistry • Previous Articles     Next Articles

Synthesis and Luminescence Properties of Gd2ZnTiO6∶Dy3+, Eu3+ Single Phase White Light-emitting Phosphors

JIANG Xiaokang, ZHOU Qi, ZHOU Hengwei()   

  1. Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter Physics,College of Physical Science and Technology,Yili Normal University,Yining 835000,China
  • Received:2022-01-12 Online:2022-06-10 Published:2022-03-22
  • Contact: ZHOU Hengwei E-mail:zhw123@163.com
  • Supported by:
    the Open Project of the Key Discipline of Physics in Xinjiang Uygur Autonomous Region, China(XJZDXK-Phy202201);the Scientific Research Project of Yili Normal University, China(2021YSYB101)

Abstract:

Dy3+,Eu3+ codoped Gd2ZnTiO6 white light-emitting phosphors were prepared by a facile sol-gel method. The phase, morphology and optical properties of these phosphors were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and photo-luminescence(PL) spectroscopy. The results showed that the obtained Dy3+,Eu3+ codoped perovskite Gd2ZnTiO6∶Dy3+,Eu3+ phosphors crystallized in the monoclinic space group P21/n and were composed of irregular particles with the size of 2—5 μm. Under the excitation of 392 nm near-UV light, Gd2 ZnTiO6∶Dy3+,Eu3+ phosphors exhibited not only yellow and blue luminescence of Dy3+, but also characte-ristic red emissions of Eu3+. Besides, the obtained samples achieved warm white-light emissions with lower correlated color temperature values by changing the doping concentration of Dy3+ and Eu3+ ions. Based on their excellent fluorescence properties, Gd2ZnTiO6∶Dy3+, Eu3+ phosphors have potential application in UV-pumped white light-emitting devices.

Key words: Sol-gel method, Dy3+, Eu3+ codoped Gd2ZnTiO6, White light-emitting phosphor

CLC Number: 

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