The electron energy levels in doped nonabrupt GaAs/Al x Ga 1-x As single quantum wells 100 Γ wide are calculated. Interface widths varying from zero to four GaAs unit cells are taken into account, as well as band bendings of 0-90 meV. It is shown that interface effects on the energy levels are impor
Accumulation layer and interface effects in doped nonabrupt GaAs/AlxGa1-xAs heterojunctions
β Scribed by Alexander K. Freire; J.Ribeiro Filho; Gil A. Farias; Valder N. Freire
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 159 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0749-6036
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β¦ Synopsis
A theoretical model is proposed to describe doped nonabrupt (\mathrm{GaAs} / \mathrm{Al}{x} \mathrm{Ga}{1-x} \mathrm{As}) heterojunctions. It is used to study interface effects on the transmission properties and energy levels of electrons in these heterostructures. It is showed that interface effects are important in the case of high doping levels, and wide (\mathrm{GaAs} / \mathrm{Al}{x} \mathrm{Ga}{1-x} \mathrm{As}) interfaces.
(c) 1995 Academic Press Limited
π SIMILAR VOLUMES
We study inhomogeneous doping effects on the confinement properties of modulationdoped single nonabrupt GaAs/Al x Ga 1-x As quantum wells. We describe the inhomogeneous doping using error function profiles, and we solve self-consistently the coupled SchrΓΆdinger (with a position dependent kinetic ene
The transmission properties of compositionally nonabrupt \(\mathrm{GaAs} / \mathrm{Al}_{x} \mathrm{Ga}_{1-x} \mathrm{As}\) heterojunctions are calculated by taking into account the spatial dependence of the carrier effective mass through the nonabrupt interface. The description of the nonabrupt hete
Transmission properties of electrons through \(\mathrm{GaAs} / \mathrm{Al}_{x} \mathrm{Ga}_{1-x}\) As symmetrical double-barriers with abrupt and nonabrupt interfaces are calculated and compared. The interface potential and carrier effective-mass are obtained assuming a linear variation of the alumi