Hc. Liu et al., EFFECT OF THE SHAPE OF THE FIRST BARRIER ON QUANTUM-WELL INFRARED PHOTODETECTOR PERFORMANCE, Journal of applied physics, 82(2), 1997, pp. 889-892
A. systematic Study of a set of GaAs/AlGaAs quantum well infrared phot
odetectors with various shapes of the first barrier (which acts as the
device emitter or collector barrier depending on the applied bias pol
arity) is reported on. Three types of barriers are investigated: a tri
angular, a thick, and a high barrier. It is found that the effect of t
he detailed emitter or collector barrier shapes on the detector perfor
mance is negligible.