Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.661
Publication date: 16th December 2024
Colloidal quantum dots (QDs) offer a cost-effective and scalable solution for manufacturing thin-film semiconductors with tunable band-gaps. Among them, certain infrared-active QDs have demonstrated exceptional potential for sensing applications beyond the capabilities of conventional silicon-based sensors. Notably, QDs such as PbS, PbSe, HgTe, Ag₂Te, InAs, and InSb have been extensively studied, with some, like PbS QDs, already reaching commercialization for short-wave infrared (SWIR) applications. However, the development of these materials varies, with ongoing research focused on enhancing their performance and industrial viability. As one of the pioneers in the commercialization of QDs for SWIR sensors, we would like to provide an overview of the progress in colloidal QD sensor technology for SWIR applications. We will begin by examining the achievements of PbS QDs, addressing their limitations in industrial applications. We will then explore the current advancements in III-V QDs, with a particular focus on InAs QDs and their potential to meet industry demands and drive the next generation of SWIR sensing technologies.
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