"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

A red-emitting phosphor for white LEDs and its luminescence properties

AN TANG1,* , QILI FAN2, XIDONG LIU1, LIDUO GU3

Affiliation

  1. Department of Mechanical Engineering, Henan University of Engineering, Zhengzhou, Henan 451191, China
  2. Department of Electrical and Electronic Engineering, Zhengzhou Technical College, Zhengzhou Henan 450121, China
  3. Department of Mechanics, Henan Mechanical and Electrical Vocational College, Zhengzhou, Henan, 451191, China

Abstract

A batch of phosphors In1.6(WO4)x(MoO4)3-x:0.4Eu3+ (x=0.02, 0.04, 0.06, 0.08, 0.10) were synthesized by a solid-state method in high temperature air. The crystallization and luminescence properties were respectively identified by X-ray diffraction (XRD) and molecular fluorescence spectrometer. The XRD pattern shows that the phosphor has no impure phase. The excitation spectrum demonstrates that the phosphor can be efficiently excited by near UV light at 394 nm and blue light at 465 nm. The emission spectrum presents the phosphor exhibiting bright red emission at 611 nm due to the Eu3+ transition of 5D0→ 7 F2. WO4 2- content does not make the emission shapes and peak positions change except for the emission intensity. When x is equal to 0.04, the intensity reaches the maximum. The color coordinates are x=0.60 and y=0.36, which are close the standard red values (0.67,0.33). The results indicates that the In1.6(WO4)0.04(MoO4)2.96:0.4Eu3+ may be a promising red-emitting phosphor for white LEDs.

Keywords

Red-emitting phosphor, Photoluminescence properties, LaInO3 , Solid-state reaction, White LEDs.

Citation

AN TANG, QILI FAN, XIDONG LIU, LIDUO GU, A red-emitting phosphor for white LEDs and its luminescence properties, Optoelectronics and Advanced Materials - Rapid Communications, 15, 1-2, January-February 2021, pp.67-70 (2021).

Submitted at: May 5, 2020

Accepted at: Feb. 12, 2021