A yellow-emitting phosphor of Mn(2+)-doped Na2CaP2O7

Spectrochim Acta A Mol Biomol Spectrosc. 2014 Mar 25:122:343-7. doi: 10.1016/j.saa.2013.10.078. Epub 2013 Nov 6.

Abstract

A yellow-emitting Na2CaP2O7:Mn(2+)phosphors have been synthesized by solid state reaction. The crystal structure, photoluminescence properties as well as concentration quenching mechanism have been investigated. The (4)T1-(6)A1 emission of Mn(2+)in Na2CaP2O7 phosphor ranges from 500 to 650 nm and exhibits a red shift while increasing the Mn(2+)concentration. The crystal field strength is calculated based on the combination of excitation spectrum and Tanabe-Sugano diagram. The chromaticity coordinates of Na2CaP2O7:Eu(2+), Mn(2+)phosphors were discussed in order to develop the potential application in white light-emitting diodes (LEDs).

Keywords: Concentration quenching; Critical distance; Phosphor; Tanabe–Sugano diagram.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Calcium / chemistry*
  • Luminescence*
  • Luminescent Agents / chemistry*
  • Manganese / chemistry*
  • Oxides / chemistry*
  • Phosphorus / chemistry*
  • Sodium / chemistry*
  • Spectrometry, Fluorescence
  • X-Ray Diffraction

Substances

  • Luminescent Agents
  • Oxides
  • Phosphorus
  • Manganese
  • Sodium
  • Calcium