Rate-equation model for energy transfer between activators at different crystallographic sites in Sr2Si5N8:Eu(2+).
The emission band of Sr(2)Si(5)N(8):Eu(2+) phosphors consists of two peaks originating from two different crystallographic sites for Eu(2+) activators in the Sr(2)Si(5)N(8) structure. The two-peak emission behavior is closely related to the energy transfer between activators at those sites. A rate-equation model involving the crystallographic information of the host was used to quantify the time-resolved photoluminescence spectra and to systematically analyze the energy transfer behavior.
Sohn
Kee-Sun
KS
Department of Printed Electronics in World Class University Program, Sunchon National University, Chonnam 540-742, Korea. kssohn@sunchon.ac.kr
Lee
Bonghyun
B
Xie
Rong-Jun
RJ
Hirosaki
Naoto
N