Morphology of wetting-layer states in a simple quantum-dot wetting-layer model
نویسندگان
چکیده
منابع مشابه
Electronic States in Three Dimensional Quantum Dot/Wetting Layer Structures
Although self-assembled quantum dots are grown on wetting layers, most simulations exclude the wetting layer. The neglected effects on the electronic structure of a pyramidal InAs quantum dot embedded in a GaAs matrix are investigated based on the effective one electronic band Hamiltonian, the energy and position dependent electron effective mass approximation, and a finite height hard-wall 3D ...
متن کاملEvolution of wetting layer in InAs/GaAs quantum dot system
evolution of the wetting layer (WL) with the InAs deposition thickness has been studied by reflectance difference spectroscopy (RDS). Two transitions related to the heavy-and light-hole in the WL have been distinguished in RD spectra. Taking into account the strain and segregation effects, a model has been presented to deduce the InAs amount in the WL and the segregation coefficient of the indi...
متن کاملSub-wetting Layercontinuum States in Quantum Dot Samples
In the polar semiconductor samples of the self-organized quantum dots, grown by the Stranski-Krastanow growth method, the lowest energy extended states of the electronic excitations are assumed to be the wetting-layer states. The coupling between these extended states and the electronic states localized in the individual quantum dots, may influence the optical spectra of such samples in the sub...
متن کاملO ptical spectra of quantum dot aggregates in the sub - wetting layer q region * ́
The samples of the self-organized quantum dots, made of polar semiconductors, grown by the Stranski–Krastanow growth method, have the so called wetting-layer (WL). The lowest-energy extended states of the electronic excitations are expected to be the WL states. The coupling between these extended states and the electronic states localized in the individual quantum dots, may have an influence on...
متن کاملPretransitional thinning of a polymer wetting layer
– Mixtures of two immiscible polymers A and B phase-separate into A-rich (α) and B-rich (β) phases. Thin films of such mixtures exhibit a transition from an equilibrium 3-layer structure (substrate/α/β/α/air) to a 2-layer structure (substrate/β/α/air) as the surface energy of the substrate is increased. In this letter we show that as an (equilibrium) precursor to this transition, the thickness ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics: Condensed Matter
سال: 2019
ISSN: 0953-8984,1361-648X
DOI: 10.1088/1361-648x/ab4f30