Year: 2010
Type: article
Abstract: Infrared detectors based on a quantum cascade have been proposed to suppress the dark current which is a limiting factor in quantum well infrared photodetectors. Those detectors have been mainly designed for the midinfrared wavelength. Operating in the terahertz range involves a complete change of regime of transport since the photon energy is lower than the optical phonon energy. Thanks to a two dimensional model of transport, we have identified interface roughness as the key interaction in such a structure. Interface parameters, evaluated by scanning transmission electron microscopy, are used to study their influence on the resistance of the device.
Source: Applied Physics Letters
DOI: 10.1063/1.3310022
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2034842887