Articles
  • Tunable green-yellow-red light properties of NaY(WO4 )2: Mn2+, Dy3+, Eu3+ phosphors excited with 365 nm LED

  • Yonghua Wua,*, Fugui Yangb, Hao Zhangb, Fengpo Yanb and Ruijuan Zuoc

  • aCollege of Electronic and Information science, Fujian Jiangxia University, Fuzhou, Fujian, 350108, P.R. China
    bMatimatical Institution, Fujian Jiangxia University, Fuzhou, Fujian, 350108, P.R. China
    cCollege of Mathematics and Informatics, Fujian Normal University, Fuzhou, Fujian, 350117, P.R. China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

By the solid-state reaction method, the NaY(WO4)2 : Mn2+, Dy3+, Eu3+ phosphors are synthesized successfully. The sample’s phase-structure and morphology have been characterized by XRD and EDS. The concentrations of Mn2+, Dy3+, Eu3+, Y3+ and W6+ are measured by ICP, The result implies that the doped process of Mn2+, Dy3+ and Eu3+ is very easy in host NaY(WO4)2. The absorption and excited spectra are presented, The absorption spectrum of Mn2+ is always broad, but the Dy3+, Eu3+has relatively sharp absorption peaks.Using the commercial LED of 365 nm wavelength as the excitation light, the emission spectra with different doped concentrations ratios of Mn2+ are obtained. The Mn2 + doping reduces the emission intensity of Dy3+,also it has meaningful influence on the tunable green-yellow-red LED.The high doped concentration of Mn2+ can guarantee the emission intensity of 546 nm enough


Keywords: Solid-state reaction, XRD, Phase-structure, LED, Absorption spectrum, Emission intensity

This Article

  • 2021; 22(4): 436-440

    Published on Aug 31, 2021

  • 10.36410/jcpr.2021.22.4.436
  • Received on Nov 25, 2020
  • Revised on Feb 13, 2021
  • Accepted on Mar 2, 2021

Correspondence to

  • Yonghua Wu

  • College of Electronic and Information science, Fujian Jiangxia University, Fuzhou, Fujian, 350108, P.R. China
    Tel : +86-189-0591-1552 Fax: +86-591-22823853

  • E-mail: wuyonghua@fjjxu.edu.cn