NDLI: Influence of quasi-bound states on the carrier capture into quantum dots

Content Provider	IEEE Xplore Digital Library
Author	Magnusdottir, I. Uskov, A. Bischoff, S. Tromborg, B. Mork, J. Ferreira, R. Bastard, G.
Copyright Year	2002
Description	Author affiliation: COM Educ. & Res. Center, Tech. Univ. Denmark, Lyngby, Denmark (Magnusdottir, I.; Uskov, A.; Bischoff, S.; Tromborg, B.; Mork, J.)
Abstract	Summary form only given. An important characteristic of quantum dot (QD) materials is the timescale on which carriers are captured into the dots and relax to their ground state. The properties of devices based on QDs, such as lasers, thus rely on efficient carrier feeding to the active QD states. These processes are believed to be mediated by carrier-phonon and carrier-carrier interaction (Auger processes). In systems of higher dimensionality, carrier relaxation via emission of LO (Longitudinal Optical) phonons is dominant. However, due to the discrete QD density of states, this process is often considered impossible unless the energy level separation equals the LO phonon energy, leading to a so-called phonon bottleneck. This argument is based on the assumption that the carrier-LO phonon interaction is weak. It was shown that carriers in discrete QD states couple strongly to phonons and that the intersubband transition cannot be treated with Fermi's golden rule. Here, we extend the analysis to the coupling between carriers in quasi-bound continuum states and discrete QD states.
Sponsorship	APS/Div. Laser Sci. IEEE/Lasers & Electro-Opt. Soc. OSA- Opt. Soc. America
Starting Page	180
Ending Page	181
File Size	214216
Page Count	2
File Format	PDF
ISBN	1557527083
DOI	10.1109/QELS.2002.1031281
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantum dots Phonons Charge carrier lifetime Electrons
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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