Nanocavities and Nanoparticles in Silicon-based Materials Tailored by Ion Implantation

嵌入不同基质材料中的纳米尺寸的晶体可以表现出新颖的光学行为，包括光发射。 然而，光学性质关键取决于定制这种非晶夹杂物的尺寸和尺寸分布的能力，这些参数极难控制。 这个项目是基于我们以前的发现，控制尺寸和分布的小孔可以通过离子辐照在硅中形成，并且这种空腔可以填充快速扩散的元素物种。 我们打算探索这一新的概念，以定制所需的硅基材料的光电子应用纳米晶体的大小。

Nanometre sized crystals embedded in different host materials can exhibit novel optical behaviour, including light emission. However, the optical properties depend critically on the ability to tailor the size and size distribution of such nanocrystal inclusions, parameters that are extremely difficult to control. This project is based on our previous discovery that small holes of controlled size and distribution can be formed in silicon by ion irradiation and that such cavities can be filled with fast diffusing elemental species. We intend to explore this novel concept to tailor the size of desired nanocrystals in silicon-based materials for optoelectronics applications.