Abstract

Space-charge effects play an important role in the dynamics of photonic transition in quantum well devices. The primary effect of space charge causes band-bending resulting a change of the potential profile. Subsequently, the tunneling effect is more pronounce in an infrared detector under a given bias voltage, and the negative resistance region in a double-barrier resonant tunneling structure (DBRTS) also occurs at a higher bias voltage. In this paper, we present a method to obtain the self-consistance solution to the Schrodiger-Poisson equation using the Local Interpolator Cardinal Spline (LICS). Our results are compared with those without self- consistance using an intersubband infrared detector as an example.

© 1993 Optical Society of America