Open AccessLuminescent properties and energy transfer in MAl12O19: Eu2+, Cr3+ (M = Ca, Sr, Ba)
Author(s) -
Ruixia Zhong,
Jiahua Zhang,
Mingya Li,
Xiaoqiang Wang
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.117801
Subject(s) - luminescence , materials science , energy transfer , doping , analytical chemistry (journal) , reducing atmosphere , host (biology) , atomic physics , optoelectronics , chemistry , physics , chromatography , metallurgy , ecology , biology
We synthesize MAl12O19 (M = Ca, Sr, Ba) singly doped with Eu2+ or Cr3+ and co-doped with Eu2+ and Cr3+ by high-temperature solid-state reaction under reducing atmosphere. It is observed that there exit energy transfers from Eu2+ to Cr3+ in MAl12O19 (M = Ca, Sr, Ba) hosts. Although the MAl12O19 (M= Ca, Sr, Ba) hosts have similar crystal structures, the energy transfer efficienies and the conversion rates of the blue light to the red light are different. Both experiment and calculation show that the energy transfer from Eu to Cr in CaAl12O19 host is most efficient, and the ratio of the red emission to the blue emission in CaAl12O19 host is the highest among the three different hosts.