陕西科技大学学报（自然科学版）2016，Vol.34Issue(2)：45-49,58,6.
Eu2＋在α-Sr2P2O7中的发光及Eu2＋→ Mn2＋的能量传递
The luminescence of Eu2+ in α-Sr2 P2 O7 and the energy transfer f rom Eu2+ to Mn2+
摘要
Abstract
A series of phosphors Sr2 - x P2 O7 :xEu2+ ( x= 0 ,0 .005 ,0 .01 ,0 .02 ,0 .025 ) and Sr1.99 - xP2O7 :0 .01Eu2+ ,xMn2+ (x= 0 .05 ,0 .1 ,0 .15 ,0 .2) were synthesized through high-temperature solid-state reaction .The phase ,morphology and luminescent properties were characterized by XRD ,SEM and photoluminescence analysis .It showed that these samples crystallize in pure orthorhombic with good crystallinity and uniform grains when sintered at 1 050 ℃ .Under the excitation of 355 nm ,a broad emission band ranging from 370~480 nm with a peak at 418 nm was obtained in Sr2 P2 O7 :Eu2+ ,which is attributed to the 5d-4f al-lowed transitions of Eu2+ .The concentration quenching effect and its mechanism were also discussed .The white emitting can be realized by co-doping with Mn2+ adjusting the chroma-ticity .It is suggested that Eu2+ plays a role of sensitizer and transfers energy to Mn2+ .The d-d transitions of Mn2+ can be improved by energy feeding from Eu2+ ,which makes it suitable for the application of white light emitting diodes (WLED) .关键词
Sr2 P2O7/Eu2+/Mn2+/发光材料/能量传递Key words
Sr2 P2 O7/Eu2+/Mn2+/phosphor/energy transfer分类
数理科学引用本文复制引用
樊国栋,林忱..Eu2＋在α-Sr2P2O7中的发光及Eu2＋→ Mn2＋的能量传递[J].陕西科技大学学报（自然科学版）,2016,34(2):45-49,58,6.基金项目
陕西省科技厅科技攻关计划项目（2014K08-12）；陕西省教育厅重点实验室科研计划项目 （）
