Optical spectroscopy of semiconductor nanowire quantum dots

半导体纳米线量子点的光谱

• 批准号: 1953961
• 金额: --
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1953961
• 关键词: Optical; spectroscopy; semiconductor; nanowire; quantum

The project is to study the optical properties of nanowire quantum dots. These are a new type of quantum dot structure in which a quantum dot is formed in a semiconductor nanowire which is grown epitaxially on a silicon substrate. Unlike the much more studied self-assembled system nanowire quantum dots have a number of advantages including more control of their dimensions, the ability to position the nanowire via pre growth patterning of the substrate and direct incorporation in an optical cavity. Samples will be grown at UCL and structural studies will be performed at Warwick Physics. The student will study the optical properties via micro-photoluminescence which allows single nanowires to be probed. The aim will be to obtain a detailed knowledge of their electronic and optical properties, allowing optimisation for a number of applications including lasers and single photon sources.

该项目是为了研究纳米线量子点的光学性质。这是一种新型的量子点结构，其中量子点是在外延生长在硅衬底上的半导体纳米线中形成的。与更多研究的自组装系统不同，纳米线量子点具有许多优点，包括对其尺寸的更多控制，通过衬底的预生长图案来定位纳米线的能力，以及直接掺入光腔中。样品将在伦敦大学学院生长，结构研究将在华威物理进行。学生将通过微型光致发光来研究光学性质，这使得可以探测单根纳米线。其目的将是获得它们的电学和光学性质的详细知识，以便对包括激光和单光子源在内的许多应用进行优化。