Optoelectronic properties of CdSe/ZnSe and ZnSe/CdSe core/shell spheroidal prolate quantum dots through the geometrical parameters and dielectric oxide matrix: A theoretical investigation

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-05-15 DOI:10.1016/j.rinp.2025.108299

N. Zeiri , N. Yahyaoui , N.Ahmed Althumairi , F. Alhajri , A. Jbeli , M. Said

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引用次数: 0

Abstract

In this work, we have investigated theoretically the simultaneous effects of the geometrical parameters and encapsulated dioxide matrix on the electronic and optical properties of CdSe/ZnSe spheroidal prolate core/shell quantum dots (SPCSQDs). The energy eigenvalues and their related wavefunctions were calculated by solving the Schrodinger equation in spheroidal coordinates within the framework of the effective mass approximation (EMA). The third-order optical nonlinear (TON) susceptibility was computed and discussed under the Compact Density Matrix approach. Our numerical results revealed that the

χ^{(3)}

for both structures: CdSe/ZnSe and ZnSe/CdSe SPCSQDs are strongly affected by the geometric factors and embedded dioxide matrix. We hope that this theoretical study can make a significant contribution to experimental studies and practical applications.

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CdSe/ZnSe和ZnSe/CdSe核/壳球状长形量子点通过几何参数和介电氧化物基体的光电特性的理论研究

在本研究中，我们从理论上研究了几何参数和封装的二氧化二氧化物基质对CdSe/ZnSe球形长形核/壳量子点（SPCSQDs）电子和光学性质的同时影响。在有效质量近似（EMA）的框架下，在球坐标系下求解薛定谔方程，计算了能量特征值及其相关波函数。用紧致密度矩阵法计算并讨论了三阶光学非线性磁化率。数值结果表明，CdSe/ZnSe和ZnSe/CdSe SPCSQDs的χ3均受几何因素和嵌入的二氧化基质的强烈影响。我们希望这一理论研究能够对实验研究和实际应用做出重大贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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