Growth and intermixing of quantum dots for multi-wavelength infrared photodetectors

量子点是通过自组装外延方法生长的纳米结构。在本项目中，将利用离子注入和随后的退火法来研究量子点的混合，这是一种改变量子点的光电性质的新技术。优化的生长、注入和退火条件将用于生长和调谐利用子带间跃迁的红外光电探测器的探测波长。这将使我们能够制造用于高性能红外成像系统的多波长红外光电探测器。这个项目涉及基础物理和设备技术的激动人心的结合。

Quantum dots are nano-scale structures grown by self-assembled epitaxial methods. In this project, intermixing of quantum dots, which is a novel technology to modify the opto-electronic properties of the dots will be studied using ion implantation and subsequent annealing. Optimised growth, implantation and annealing conditions will be used to grow and tune the detection wavelength of the infrared photodetectors using intersubband transition. This will allow us to fabricate multi-wavelength infrared photodetectors for high performance infrared imaging system. This project involves an exciting combination of fundamental physics and device technology.