First-principles study of divalent IIA and transition IIB metals doping into Cu2O

First-principles study of divalent IIA and transition IIB metals doping into Cu2O
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二价IIA和过渡IIB金属掺杂Cu2O的第一性原理研究

DOI:
10.1007/s11595-015-1171-0
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发表时间:
2015-06
期刊:
Journal of Wuhan University of Technology-Mater. Sci. Ed.
影响因子:
--
通讯作者:
Yunbin He
Yunbin He
中科院分区:
其他
文献类型:
--
作者:
Jiakun Zhu;Minghai Luo;Mingkai Li;Yunbin He

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采用基于密度泛函理论的第一性原理计算方法,对Ⅱ A族二价金属Be、Mg、Ca、Sr、Ba和Ⅱ B族过渡金属Zn、Cd作为可能的掺杂剂掺杂到Cu2O中进行了理论研究.通过对不同掺杂体系的晶格参数、键长、电子结构、局域态密度和缺陷形成能的系统分析,发现Ca、Sr、Ba和Be作为浅施主更适合n型掺杂,而Mg作为深施主更适合n型掺杂。同时,Zn和Cd由于其相应缺陷的形成能为正,很难掺杂到Cu2O中。
Divalent IIA metals such as Be, Mg, Ca, Sr, Ba and transition IIB metals such as Zn, Cd were investigated as possiblen-type dopants into the Cu2O theoretically by using the first-principles calculations based on density functional theory. By systematical analyses of the lattice parameters, the bond length, the electronic structure, the local density of states and the defect formation energy for various doping systems, it is revealed that Ca, Sr, Ba and Be are more suited forn-type doping into Cu2O as shallow donors, compared to Mg which introduces a relatively deep donor level in Cu2O. Meanwhile, Zn and Cd can hardly be doped into Cu2O due to the positive formation energy of relevant defects.
DOI: 10.1557/proc-75-721
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