New insights into fundamental carrier transport in type-II superlattices

基于第二类超晶格(T2SL)的半导体已经成为公认的基于HgCdTe的红外探测器的竞争对手，有望以显著更低的成本获得与之相当的性能。T2SL是一种复杂的纳米结构，具有多载流子和高度各向异性的电子输运性质，这使得它们在实验上的研究具有极大的挑战性。缺乏可靠的实验数据限制了优化和建模工作，从而阻碍了进展。该项目旨在通过使用水声局开发的世界领先的迁移谱技术和三个世界领先的T2SL结构，从实验和理论上系统地研究T2SL中的电子输运。

Type-II superlattice (T2SL) based semiconductors have emerged as a rival to well-established HgCdTe-based IR detectors, promising comparable performance at significantly lower cost. T2SLs are complex nanostructures that exhibit multiple-carrier and highly-anisotropic electronic transport properties, which renders them exceedingly challenging to study experimentally. The lack of reliable experimental data has limited optimisation and modelling efforts, and thus hampered progress. This project aims to systematically study electronic transport in T2SLs, both experimentally and theoretically, by employing world-leading mobility spectrum techniques developed at UWA and state-of-the art T2SL structures from three world leaders in T2SLs.