InAs quantum dot growth
Growth parameters of InAs/GaAs quantum dots grown by MOVPE
... structures. Quantum dots show promise for use in diode lasers, amplifiers, and biological ...solid-state quantum computing. Indium arsenide quantum dots are currently studied for their use in the ...
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Quantum Engineering of InAs/GaAs Quantum Dot Based Intermediate Band Solar Cells
... of InAs self-assembled quantum dots in the intrinsic region of a GaAs pin ...MBE growth to create quantum dot arrays that do not require strain ...the quantum dots at the ...
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Ultrafast dynamics in InAs quantum dot and GaInNAs quantum well semiconductor heterostructures
... The absorption recovery dynamics have also been investigated in such structures, the Self-electro-optic effect device (SEED) being a particular example [54]. This device is similar to an EAM but exploits feedback from ...
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Raman scattering of InAs/AlAs quantum dot superlattices grown on (001) and (311)B GaAs surfaces
... sample growth direction. The substrate temperature was 460°C during the growth of InAs QDs at an arsenic pressure of 8 × 10 −6 ...the growth was interrupted for 10 s for InAs QDs. The ...
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1300 nm wavelength InAs quantum dot photodetector grown on silicon
... of dot layers, incorporation of quantum dots in a resonant cavity structure can increase the quantum ...external quantum efficiency of 90% at ~1 µ m wavelength was reported for a resonant ...
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Raman scattering study on Sb spray InAs/GaAs quantum dot nanostructure systems
... with InAs/GaAs QDs capped by GaAs with non-Sb spray was named sample 1; the other three samples with InAs/GaAs QDs sprayed by Sb flux ...The growth rates de- termined by monitoring the RHEED ...
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Electronic Coupling in Nanoscale InAs/GaAs Quantum Dot Pairs Separated by a Thin Ga(Al)As Spacer
... low growth rate (~0.01 ML/s) used for the InAs QDs resulted in the formation of large, homogeneous, high-quality ...low growth rate, the indium adatoms have a long migration length and thereafter ...
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Improvement of performance of InAs quantum dot solar cell by inserting thin AlAs layers
... of quantum dots (QDs), their incorporation into the middle layer enhances the photo current of solar cells, which can be further improved by forward scattering techniques ...by growth rate, temperature, and ...
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Continuous wave terahertz radiation from an InAs/GaAs quantum dot photomixer device
... The active PC material has been the most heavily researched aspect of CW THz optoelectronics, since the semi- nal work into ultrafast semiconductors such as radiation- damaged silicon-on-sapphire 6 and ...
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Quantum engineering of InAs/GaAs quantum dot based intermediate band solar cells
... of InAs self-assembled quantum dots in the intrinsic region of a GaAs pin ...MBE growth to create quantum dot arrays that do not require strain ...the quantum dots at the ...
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Detecting Spatially Localized Exciton in Self Organized InAs/InGaAs Quantum Dot Superlattices: a Way to Improve the Photovoltaic Efficiency
... compensation growth technique has been demonstrated with GaAsN, GaAsP, and GaP buffer layer for InAs/GaAs material systems ...cover InAs/ GaAs QDs layer with a thin InGaAs strain-reduced ...to ...
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Investigation of InAsSbP quantum dot mid-infrared sensors
... and InAs, InP and Sb (6N) were used as so- ...the growth of InAsSbP nanostructures in S–K growth ...of quantum dots were studied using an atomic force microscope (AFM – Asylum Research MFP- ...
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Optical and Mechanical Characterization of InAs/GaAs Quantum Dot Solar Cells
... Initial quantum dot solar cells grown without strain balancing, it was apparent that there was significant degradation in cell ...relaxed InAs lattice constant and slowly relaxes back to its lattice ...
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Quantum Nanostructures by Droplet Epitaxy
... different InAs nanostructures could be formulated at some controlled growth parameters such as substrate temperature, growth thickness and growth ...during growth process is originated ...
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1300 nm wavelength InAs quantum dot photodetector grown on silicon
... In(Ga)As quantum dots on silicon [7] and Ge [8] substrates, to realize lasing at a wavelength of 1300 nm ...[9]. Quantum dots are expected to offer several advantages over the current approach of bulk Ge on ...
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Chirped InGaAs quantum dot molecules for broadband applications
... GaAs. Growth stops here for single QDM layer ...structures, growth continues with an additional QDM layer and a final 100- nm ...of InAs seed QDs are grown at 500°C, then capped by y-ML GaAs at 470°C ...
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Quadra Quantum Dots and Related Patterns of Quantum Dot Molecules: Basic Nanostructures for Quantum Dot Cellular Automata Application
... of InAs quantum dot molecules with different features fabricated using a combination of conventional Stranski-Krastanow growth mode and a modified MBE technique using thin or partial capping ...
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Elimination of Bimodal Size in InAs/GaAs Quantum Dots for Preparation of 1 3 μm Quantum Dot Lasers
... between InAs layers and GaAs substrate [8]. The growth of InAs on GaAs (001) substrate results in the formation of a three-dimensional (3D) island shape on the InAs with the Stranski-Krastanov ...
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Kroner, Martin (2008): Resonant photon-exciton interaction in semiconductor quantum dots. Dissertation, LMU München: Fakultät für Physik
... The growth process is stopped after the deposition of an amount corresponding to ...The quantum dots are then capped by GaAs to increase their distance from the crystal ...the quantum dot from ...
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Telecommunication Wavelength Band Single Photon Emission from Single Large InAs Quantum Dots Nucleated on Low Density Seed Quantum Dots
... Although InAs/InP QDs can emit single photons in a ...of InAs/GaAs QDs to telecommunication wavelength, several methods have been developed, such as asymmetric InGaAs/GaAs dot- in-well (DWELL) ...
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