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First-Principles Calculation of Electronic Structure and Optical Properties of Brookite TiO2
Author(s): 
Pages: 78-82,92
Year: Issue:  1
Journal: Journal of Beijing Union University(Natural Sciences)

Keyword:  板钛矿相TiO2电子结构光学性质第一性原理;
Abstract: 采用基于密度泛函理论(DFT)框架下广义梯度近似平面波超软赝势法,计算了板钛矿相TiO2的电子结构、态密度、电荷密度和光学性质.计算结果表明板钛矿相TiO2为直接带隙氧化物,禁带宽度为2.36 eV;计算并分析了板钛矿相TiO2的复介电常数、复折射率、光电导谱、吸收系数、反射率和损失函数,计算得到其静态介电常数为(100)、(010)和(001),方向分别为4.12、3.37和3.45,折射率分别...
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