Abstract A complete investigation on the strain and structural properties of the heterogeneously coupled InAs Submonolayer (SML) on InAs Stranski-Krastanov (SK) quantum dot (QD) heterostructure has been done. This study shows the tunability of structural and optical characteristics of this coupled SML on SK QDs by varying the strain field through growth rate and barrier thickness. Both experimental and theoretical investigations were done to understand the strain distribution within the heterostructures. The low growth rate samples exhibited lesser in- and out-plane strain, which were also reflected in the transmission electron microscopy (TEM) images. This study would help the researchers to design devices (utilizing advantages of both SK and SML QDs) for high performance solar photovoltaics.

中文翻译：

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调整在 InAs Stranski-Krastanov (SK) 量子点上生长的异质耦合 InAs 亚单层 (SML) 量子点的结构和光学特性

摘要 对 InAs Stranski-Krastanov (SK) 量子点 (QD) 异质结构上的异质耦合 InAs 亚单层 (SML) 的应变和结构特性进行了完整的研究。该研究通过生长速率和势垒厚度改变应变场，显示了这种耦合 SML 在 SK QD 上的结构和光学特性的可调性。进行了实验和理论研究以了解异质结构内的应变分布。低生长速率样品表现出较小的平面内和平面外应变，这也反映在透射电子显微镜 (TEM) 图像中。这项研究将帮助研究人员设计用于高性能太阳能光伏的设备（利用 SK 和 SML QD 的优势）。