%0 Journal Article
%T Effect of Precursor Molar Ratio of [S2-]/[Zn2+] on Particle Size and Photoluminescence of ZnS:Mn2+ Nanocrystals<br>Effect of Precursor Molar Ratio of [S^2-]/[Zn^2＋] on Particle Size and Photoluminescence of ZnS：Mn^2＋ Nanocrystals
%A DONG Dong-Qing
%A LI Lan
%A ZHANG Xiao-Song
%A HAN Xu
%A AN Hai-Ping
%A <br>董冬青
%A 李岚
%A 张晓松
%A 韩旭
%A 安海萍
%J 中国物理快报
%D 2007
%I 
%X We investigate the influence of precursor molar ratio of S^2-]/Zn^2＋] on particle size and photoluminescence （PL） of ZnS：Mn^2＋ nanocrystMs. By changing the S^2-]/Zn^2＋] ratio from 0.6 （Zn-rich） to 2.0 （S-rich）, the particle size increases from nearly 2. 7nm to about 4.Ohm. The increase in the ratio of S^2-]/Zn^2＋] cadses a decrease of PL emission intensity of ZnS host while a distinct increase of Mn^2＋ emission. The maximum intensity for the luminescence of Mn^2＋ emission is observed at the ratio of S^2-]/Zn^2＋] ≈ 1.5. The possible mechanism for the results is discussed by filling of S^2- vacancies and the increase of Mn^2＋ ions incorporated into ZnS lattices.
%K 73
%K 63
%K Bd
%K 73
%K 63
%K Kv
%K 74
%K 25
%K Gz<br>[S^2-]/[Zn^2＋]
%K 比率
%K 粒子型号
%K 光激发光
%K ZnS：Mn^2＋
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=03664AC44D480818B024AD437A1314F1&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=9CF7A0430CBB2DFD&sid=5FCE9AC7218D4C89&eid=7C1A07885398BA5E&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0