最近 MEE 和 MOVPE 薄膜生长技术的进展使得制备高度精细的超薄多层结构成为可能,该结构是在结晶的半导体上,由空间上等距离分布的同质结或异质结周期排列而成。组分层的厚度 Lz 和 Lb 可以被减小到原子单层的尺寸。在这些人造超晶格与量子阱结构中,由于量子尺寸效应,出现了一些新奇的物理现象。与体材料相比,电子和空穴的能量及波函数大大地改变了,形成了称为子 Recent advances in MEE and MOVPE thin film growth technologies have made it possible to produce highly-fine, ultra-thin multilayered structures that are periodically arranged in a crystallized semiconductor space by homogeneously distributed homojunction or heterojunction. The thicknesses Lz and Lb of the constituent layers can be reduced to the size of the monolayer of atoms. In these artificial superlattice and quantum well structures, some novel physical phenomena have emerged due to quantum size effects. Compared with bulk materials, the energies and wave functions of electrons and holes greatly change, forming a