高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (6): 20220029.doi: 10.7503/cjcu20220029

• 研究论文: 无机化学 • 上一篇    下一篇

Gd2ZnTiO6∶Dy3+, Eu3+单基质白光荧光粉的制备与发光性能

蒋小康, 周琦, 周恒为()   

  1. 伊犁师范大学物理科学与技术学院, 新疆凝聚态相变与微结构实验室, 伊宁 835000
  • 收稿日期:2022-01-12 出版日期:2022-06-10 发布日期:2022-03-22
  • 通讯作者: 周恒为 E-mail:zhw123@163.com
  • 基金资助:
    新疆维吾尔自治区物理学重点学科开放课题(XJZDXK-Phy202201);伊犁师范大学科研项目(2021YSYB101)

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)

摘要:

采用溶胶-凝胶法制备出Dy3+, Eu3+共掺杂Gd2ZnTiO6白光荧光粉. 通过X射线衍射(XRD)、 扫描电子显微镜(SEM)、 光致发光(PL)光谱对荧光粉的物相、 形貌及荧光性质进行了表征. 结果表明, 所制备的样品均为双钙钛矿结构, 属于单斜晶系(空间群: P21/n), 形貌为2~5 μm无规则形状的颗粒. 在392 nm近紫外光的激发下, Gd2ZnTiO6∶Dy3+,Eu3+荧光粉展现出Dy3+的蓝光、 黄光发射以及Eu3+的特征红光发射. 此外, 通过调节Dy3+和Eu3+的掺杂浓度, 可实现低色温的暖白光发射. 基于样品优异的荧光性能, 该荧光粉在近紫外激发白光LED中具有一定的开发潜力.

关键词: 溶胶-凝胶法, Dy3+, Eu3+共掺杂Gd2ZnTiO6, 白光荧光粉

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

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