摘要
采用基于密度泛函理论(DFT)框架下局域密度近似平面波超软赝势法,计算了纤锌矿型ZnO的能带结构、态密度和复介电常数,计算结果与其他文献结果吻合较好,并从理论上分析了它们之间的关系。结果表明,纤锌矿型ZnO在(100)和(001)方向上具有光学各向异性,为纤锌矿型ZnO的应用提供了理论依据。
Electronic structure,density of states and complex dielectric function of wurtzite ZnO were investigated using a plane-wave ultrasoft pseudopotential technique based on the density functional theory(DFT).The calculated results were in agreement with the others values.The relationship was theoretically analyzed,showing that wurtzite ZnO possesses significant optical anisotropy in polarization direction,(100) and(001),rendering a theoretical basis for future application of wurtzite ZnO.
出处
《青岛科技大学学报(自然科学版)》
CAS
2009年第5期377-380,共4页
Journal of Qingdao University of Science and Technology:Natural Science Edition
基金
航空科学基金项目(2008ZF53058)
教育部博士点基金项目(200806991032)
西北工业大学基础研究基金项目(NWPU-FFR-W018108)
关键词
纤锌矿型ZnO
能带结构
态密度
复介电常数
第一性原理
wurtzite ZnO
band structure
density of states
complex dielectric function
first-principle