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对量子点超晶格材料中量子点纵向周期和同层量子点的横向周期间距对量子点及其周围应变场分布的影响进行了系统的研究.结果表明,横向和纵向周期通过衬底材料之间的长程相互作用对量子点沿中心轴路径应变分布的影响效果正好相反,在适当条件下,两者对量子点应变场分布的影响可以部分抵消.同时也论证了在单层量子点和超晶格量子点材料中,计算量子点的电子结构时,应综合考虑量子点空间周期分布对载流子限制势的影响,不能简单的利用孤立量子点模型来代替.
The effects of the quantum dot vertical period and the quantum dot horizontal interval on the distribution of quantum dots and their surrounding strain field in quantum dot superlattice materials have been systematically investigated. The results show that the lateral and longitudinal cycles pass through the substrate material The effect of long-range interaction on the strain distribution of quantum dots along the central axis is just the opposite. Under appropriate conditions, the influence of the two on the strain distribution of quantum dots can be partially offset. At the same time, Lattice quantum dot material, the calculation of the electronic structure of quantum dots, the quantum dot space should be taken into account the impact of the spatial distribution of the carrier potential constraints, can not simply use the isolated quantum dot model instead.