Optoelectronic Properties of Gaussian DQWell for RTD Application.

      Аннотация: In this work, electronic and optoelectronic properties of Gaussian double quantum well is numerically computed in presence of electric field applied along the direction of quantum confinement. Structural parameters and material composition are tuned in order to study the variation of eigenenergies of lowest three levels and density of states. Tailorable carrier states and controllable intersubband transition are the features that can be utilized for design of photodetector. Absorption coefficient and oscillator strength are also calculated for the same purpose. Results are compared with ideal parabolic potential profile. Kane type band nonparabolicity of first order is considered for realistic simulation. Obtained results have profound importance for design of quantum well based optoelectronic devices.

Ключевые слова: Nanostructure, Numerical techniques, Oscillator strength, Quantum Well, Gaussian potential, Intersubband transition, Absorption coefficient