The parallel and perpendicular electron mobilities in a GaAs-Al₀.₄₅ Ga₀.₅₅As superlattice have been calculated. The scattering of electrons by confined longitudinal optical phonons was taken into account. Using the quantum ...

The binding energy of shallow hydrogenic impurity in GaAs-GaAs-Ga₁₋xAlxAs superlattices, under the influence of magnetic field, is theoretically studied following a variational procedure within the effective-mass approximation ...

Conjugated polymers now provide a class of processible, film-forming semiconductors and metals. In this work, the electronic properties of polymer lightemitting diodes devices are numerically studied. Our results show ...