학술논문
Energy Transfer and Thermal Quenching Behaviors of CaLa2?(?MoO4?)?4?:?Sm3?+??,?Eu3?+? Red Phosphors
Document Type
Article
Author
Source
Journal of the Electrochemical Society; February 2011, Vol. 158 Issue: 2 pJ1-J5, 5p
Subject
Language
ISSN
00134651; 19457111
Abstract
phosphors are prepared using a convenient solid-state reaction route. The red emission intensity of is enhanced by ion codoping. The energy transfer mechanism from to was found to be a dipole-quadrupole interaction with a critical distance of . With increasing doping content, the energy transfer efficiency gradually increased to 75.5%. The thermal quenching behavior was investigated using absorption and emission spectra. The thermal quenching temperature of phosphors is above , and the activation energy of the thermal quenching process is . The effect of codoped ions on the thermal stability of phosphors is investigated.