%0 Journal Article
%T Upconversion Luminescence of Ho3+ Doped NaYF4 Powder at 828 nm Laser Excitation<br>828nm近红外光激发下Ho3+掺杂NaYF4的上转换发光性质
%A WANG Ya-jing
%A ZHANG Zheng
%A XIAO Lin-jiu
%A XIE Ying
%A <br>王雅静
%A 张征
%A 肖林久
%A 谢颖
%J 过程工程学报
%D 2012
%I 
%X Trivalent Ho3+-doped NaYF4 up-conversion luminescence powder was synthesized.The effects of heat treatment temperature and concentration of Ho3+ on its structure,morphology and luminescent behavior were examined by XRD,FT-IR,EDX and upconversion luminescence.Characters are studied on the synthesis temperature and concentration.The strongest emission was obtained under the excitation of 828 nm laser when annealing temperature was 900℃ and Ho3+ concentration 0.7%(mol).Upconversion luminescence of yellow and blue light emissions was obtained under the excitation of 828 nm diode in NaYF4:Ho3+ before annealing,strong green was obtained after annealing at 700℃.The mixed crystals of phases α and β appeared after annealing at 400℃,and the pure phase β appeared after annealing at high temperature.The upconversion mechanisms are green,yellow and blue emissions corresponding to the transitions of 5F4,5S2-5I8,5I5-5G6 and 3K8,5F3-5I8,respectively.
%K upconversion
%K NaYF4
%K Ho3+
%K annealing
%K excitation<br>上转换发光
%K NaYF4
%K Ho3+
%K 退火
%K 激发
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=28538CA98C300078D80894BB6AD03F62&yid=99E9153A83D4CB11&vid=59906B3B2830C2C5&iid=CA4FD0336C81A37A&sid=6425DAE0271BB751&eid=F1A8654ADB4E656E&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=0