Intersubband absorption in CdSe/Zn{sub x}Cd{sub y}Mg{sub 1-x-y}Se self-assembled quantum dot multilayers

Journal Article · Mon Feb 12 00:00:00 EST 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2679783· OSTI ID:20971823

Shen, A; Lu, H; Charles, W; Yokomizo, I; Tamargo, M C; Franz, K J; Gmachl, C; Zhang, S K; Zhou, X; Alfano, R R; Liu, H C ^[1]

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1. Department of Electrical Engineering, City College of the City University of New York, New York, New York 10031 (United States)

The authors report the observation of intersubband absorption in multilayers of CdSe/Zn{sub x}Cd{sub y}Mg{sub 1-x-y}Se self-assembled quantum dots. The samples were grown by molecular beam epitaxy on InP substrates. For samples with the CdSe dot layers doped with Cl and with the deposited CdSe equivalent layer thickness between 5.2 and 6.9 ML, peak absorption between 2.5 and 3.5 {mu}m was observed. These materials are promising for intersubband devices operating in the mid- and near-infrared ranges.

• OSTI ID: 20971823
• Journal Information: Applied Physics Letters, Vol. 90, Issue 7; Other Information: DOI: 10.1063/1.2679783; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
CADMIUM SELENIDES
CHLORINE
CRYSTAL GROWTH
DOPED MATERIALS
INDIUM PHOSPHIDES
INFRARED SPECTRA
LAYERS
MAGNESIUM COMPOUNDS
MOLECULAR BEAM EPITAXY
QUANTUM DOTS
SEMICONDUCTOR MATERIALS
SUBSTRATES
THICKNESS
ZINC COMPOUNDS