%0 Journal Article
%T Electronic structures of defects associated with intrinsic vacancies in PbWO_4 crystals<br>PbWO4晶体空位型缺陷电子结构的研究
%A Yao Ming-Zhen
%A Liang Ling
%A Gu Mu
%A Duan Yong
%A Ma Xiao-Hui
%A <br>姚明珍
%A 梁玲
%A 顾牡
%A 段勇
%A 马晓辉
%J 物理学报
%D 2002
%I 
%X This paper presents a study on electronic structures of defects associated with oxygen vacancy V O and lead vacancy V Pb in lead tungstate crystals (PbWO 4), by the relativistic self consistent discrete variational embedded cluster method. Furthermore, the excitation energy is also calculated. We found that WO 3+ V O could be the absorption center at 350nm and 420nm, and the existence of V Pb can diminish the band gap of WO 4 2- .
%K PbWO
%K 4 crystal
%K density functional theory
%K oxygen and lead vacancies
%K density state<br>PbWO4晶体
%K 密度泛函
%K 氧空位和铅空位
%K 态密度分布
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=36C62AD8264CAC09&yid=C3ACC247184A22C1&vid=987EDA49D8A7A635&iid=CA4FD0336C81A37A&sid=F122871CC7EC92DC&eid=1F199509C0B6C4D6&journal_id=1000-3290&journal_name=物理学报&referenced_num=12&reference_num=16