The Dependence of Electronic Structure and Optical Absorption Coefficient on the Size and Mass of the Wurtzite ZnS Quantum Dot

Shamer M. K.; Fadel H. K.

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The Dependence of Electronic Structure and Optical Absorption Coefficient on the Size and Mass of the Wurtzite ZnS Quantum Dot

机译：电子结构的依赖性和光学吸收系数对紫立岩ZnS量子点的尺寸和质量

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The density functional theory is used to analyze the electronic band structures of various atoms and molecules. The effect of quantum confinement on the electronic and exciton band structures is taken into account, which optical properties are insensitive to light polarization. The effective mass approximation, the valance band degeneracy, and the reduced effective mass in the parallel and perpendicular directions of the electrons and holes are also taken into account. The dispersion relation, quantum confinement effects, joint density of states, refractive index, and absorption coefficient are calculated and discussed, which gives good agreement with the theoretical calculations and experimental measurements.

机译：密度泛函理论用于分析各种原子和分子的电子能带结构。考虑了量子限制对电子和激子能带结构的影响，其光学性质对光偏振不敏感。有效质量近似、价带简并度以及电子和空穴在平行和垂直方向上的约化有效质量也被考虑在内。计算和讨论了色散关系、量子限制效应、联合态密度、折射率和吸收系数，与理论计算和实验测量结果吻合良好。

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《Journal of surface investigation: x-ray, synchrotron and neutron techniques》 |2020年第6期|共9页
作者
Shamer M. K.; Fadel H. K.;
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作者单位

Univ Basra Coll Educ Pure Sci Dept Phys Basra 42002 Iraq;

Univ Basra Coll Educ Pure Sci Dept Phys Basra 42002 Iraq;

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原文格式 PDF
正文语种 eng
中图分类原子核物理学、高能物理学;
关键词
quantum dot; effective mass; quantum confinement; optical absorption;

机译：量子点;有效质量;量子限制;光吸收;

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2. Photoluminescence of Ag-In-S/ZnS quantum dots: Excitation energy dependence and low-energy electronic structure [J] . Irina V. Martynenko, Anvar S. Baimuratov, Florian Weigert, 纳米研究：英文版 . 2019,第007期
3. Polar Mixing Optical Phonon Spectra in Wurtzite GaN Cylindrical Quantum Dots： Quantum Size and Dielectric Effects [J] . ZHANG Li, LIAO Jian-Shang 理论物理通讯：英文版 . 2010,第005期
4. Polar Mixing Optical Phonon Spectra in Wurtzite GaN Cylindrical Quantum Dots: Quantum Size and Dielectric Effects [J] . ZHANG Li, LIAO Jian-Shang 理论物理通讯（英文版） . 2010,第005期
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6. Electronic and Optical Properties of Exciton in Wurtzite GaN/Ga_(0.8)Al_(0.2)N and ZnO/Zn_(0.607)Mg_(0.393)O Strained Quantum Dots [J] . N. S. Minimala, A. John Peter, Chang Kyoo Yoo Journal of computational and theoretical nanoscience . 2014,第1期

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7. Size dependent effective band gap, optical absorption coefficients and refractive index changes in a wide ZnS/Zn _(1-x)Mg _xS strained quantum well [J] . Elangovan P., John Peter A. Physica, B. Condensed Matter . 2012,第13期

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9. Atomistic Simulations of Electronic Structure in Realistically-Sized Wurtzite InN/GaN Quantum Dots having Different Geometries [C] . Krishna Yalavarthi, Vamsi Gaddipati, Shaikh Ahmed NSTI-Nanotech 2010;NSTI nanotechnology conference and expo;Bio Nanotech 2010;NSTI bio nano conference and expo;Microtech 2010;Microtechnology conference and expo;WCM 2010;Workshop on compact modeling;NSTI nanotech ventures;TechConnect summit;Clean technology . 2010

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The Dependence of Electronic Structure and Optical Absorption Coefficient on the Size and Mass of the Wurtzite ZnS Quantum Dot

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