Modeling of intraband absorption for quantum dot-in-well structures with low computational cost

Hong, B H; Rybchenko, S I; Itskevich, I E; Haywood, S K; Tan, C H; Vines, P; Hugues, M

Abstract

Much effort has been committed to development of quantum-dot-based infrared photodetectors owing to their potential for normal-incidence absorption and low dark current.Quantum-dot-in-well structures offer additional advantages, such as better wavelength tunability and improved carrier collection. This system presents a challenge for modeling of electronic structure, as it requires solution for a complex system (quantum dot plus quantum well) with both discrete levels and the continuum energy spectrum. The Green's function method, mostly used for such problems, has very high computational cost. Here we use the Finite Element Method to model intraband absorption spectra of quantum-dot-in-well structures within the effective mass approximation.

Citation

Hong, B. H., Rybchenko, S. I., Itskevich, I. E., Haywood, S. K., Tan, C. H., Vines, P., & Hugues, M. (2010). Modeling of intraband absorption for quantum dot-in-well structures with low computational cost. Journal of Physics: Conference Series, 242(1), Article 012013. https://doi.org/10.1088/1742-6596/242/1/012013

• Journal Article Type: Article
• Acceptance Date: Jul 23, 2010
• Online Publication Date: Aug 4, 2010
• Publication Date: 2010
• Journal: Journal of Physics: Conference Series
• Print ISSN: 1742-6588
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 242
• Issue: 1
• Article Number: 012013
• DOI: https://doi.org/10.1088/1742-6596/242/1/012013
• Public URL: https://hull-repository.worktribe.com/output/405567