quantum well


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quantum well

[¦kwän·təm ′wel]
(electronics)
A thin layer of material (typically between 1 and 10 nanometers thick) within which the potential energy of an electron is less than outside the layer, so that the motion of the electron perpendicular to the layer is quantized.
References in periodicals archive ?
Quantum well heterostructures are key components of many optoelectronic devices, because they can increase the strength of electro-optical interactions by confining the carriers to small regions.
It was quick to develop high efficiency single junction quantum well solar cells, and has now developed very high efficiency triple junction solar cells, enabling the market for this new, lower-cost renewable electricity generating technology.
Also, compared with the simpler quantum wells, quantum-well wires allow more electrons into those energy levels.
The use of dilute nitrides will allow QuantaSol to reduce the number of quantum well layers it needs to introduce into each junction, while maintaining or increasing solar efficiency.
Investigation of Intersubband Transition in GaAs/AlGaAs Quantum Well Infrared Photodetectors
In summary, conventional quantum well diode lasers with or without mode-locking remain too noisy to be practical comb lasers for high speed communication.
These QW devices - which utilize the quantum well effect of confining charge carriers to a two-dimensional plane, improving their transport characteristics - exhibit low band-to-band tunneling current and provide significant mobility enhancements.
For our research, we will adopt InAsInGaAs quantum wells, characterized by strong spin-orbit interaction and large Lande g-factor, coupled to superconducting electrodes.
Like a coaxial cable hooked up to a television (only at a much smaller scale), the laser cavity consists of a metal rod enclosed by a ring of metal-coated, quantum wells of semiconductor material.
Like a coaxial cable hooked up to a television, only at a much smaller scale, the laser cavity consists of a metal rod enclosed by a ring of metal-coated, quantum wells of semiconductor material.
Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells.
They cover fundamental properties, optical properties, electrical transport properties, surface properties and Schottky contacts, native point defects and doping, the spectral identification of impurities and native defects, the vapor transport growth of ZnO substrates and the homo-epitaxy of device layers, growth mechanisms and properties of hydrothermal ZnO, the growth and characteristics of gallium nitride/zinc oxide hetero-epitaxy and ZnO-based hybrid devices, room temperature stimulated emission and ZnO lasers, ZnO-based ultraviolet detectors, and room temperature stimulated emission from ZnO multiple quantum wells grown on lattice-matched substrates.