Novel superlattices with more than two-layer unit cells, for higher sensitivity infrared imaging

博士的目标是提高InAs/InAsSb超晶格光电探测器在红外领域的整体性能。这将通过建模、设计和实验来实现，并在超晶格中添加额外的层。这些设备可以在兰开斯特大学的洁净室中进行处理，然后在实验室中进行表征，这样整个设备的开发过程就可以在内部进行。该项目是兰开斯特大学和莱昂纳多英国有限公司长期合作的一部分。博士生将每月与工业联系人/主管联系。他们将每月提供简短的进度更新，并收到评论、指导和建议作为回报。在一个季度的时间表上，更详细的工作总结将与莱昂纳多分享，并进行讨论。如果流行病和限制条件允许，计划大约每6个月进行一次亲自访问。在博士学位的第二年或第三年，设想在莱昂纳多现场工作一段时间。一旦项目的发展方向明确，要进行的工作细节将被固定。然而，可能性包括电光材料表征，以补充在兰开斯特进行的表征，如时间分辨PL，或阵列表征，以获得最终目标器件的操作经验。成功完成博士学位并不取决于在工业合作伙伴的实际工作，无论是公司员工还是学生。

The PhD's aim is to improve the overall performance of an InAs/InAsSb superlattice photodetector for applications in the infrared regime. This is to be achieved by modelling, designing and experimentally growing devices with additional layers in the superlattice. These devices can then be processed in the clean room at Lancaster University and then characterised in the labs there such that the entire device development process can be undertaken in house. This project forms a part of the long-standing collaboration between Lancaster University and Leonardo UK Ltd.The PhD student will have monthly contact with the industrial contact/supervisor. They will provide brief monthly progress updates and receive comment, guidance and advice in return. On a quarterly schedule, more detailed summaries of work will be shared with Leonardo, and discussed. In person visits are planned approximately every 6 months, pandemic and restrictions permitting. In the 2nd or 3rd year of the PhD, a period of time working on site at Leonardo is envisaged. Details of work to be carried out will be fixed once the evolutionary direction of the project is clear. However, possibilities include electro-optical material characterisation to complement characterisation undertaken at Lancaster, such as time resolved PL, or array characterisation to gain experience in operation of the final target device. Successful completion of the PhD is not contingent on practical work at the industrial partner, either by company employees or the student.