Quantum dot infrared photodetectors: Advantages, challenges, and future research directions

TitleQuantum dot infrared photodetectors: Advantages, challenges, and future research directions
Publication TypeJournal Article
Year of Publication2009
AuthorsAD Stiff-Roberts
Journal2009 9th Ieee Conference on Nanotechnology, Ieee Nano 2009
Start Page444
Pagination444 - 449
Date Published12/2009
Abstract

Quantum dot infrared photodetectors (QDIPs) are positioned to become an important technology in the field of infrared (IR) detection, particularly for high-temperature, low-cost, high-yield detector arrays required for military applications. By addressing critical challenges inherent to epitaxial quantum dot (QD) material systems, the performance and applicability of QDIPs will continue to improve. In particular, three main approaches to combat epitaxial growth challenges and to obtain state-of-the-art performance in QDIPs are presented. First, epitaxial growth techniques designed to obtain uniform dopant incorporation in QD ensembles are reviewed. Second, bandgap engineering in QD heterostructures is presented as a tool to control device performance. Third, innovative photonic structures are discussed as a technique to increase and control absorption of incident IR radiation in QDIP heterostructures. Finally, preliminary investigations of a fundamentally different QD material system, namely colloidal QDs, are presented as a future direction of QDIP research. © 2009 IEEE NANO Organizers.

Short Title2009 9th Ieee Conference on Nanotechnology, Ieee Nano 2009