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Carrier scattering approach to the origins of dark current in mid- and far-infrared (terahertz) quantum-well intersubband photodetectors (QWIPs)\ud

By N.E.I. Etteh and P. Harrison


A carrier scattering approach is taken in an analysis\ud of the affect on the dark current of extending the operating wavelength of conventional bound to continuum quantum-well intersubband photodetectors. It is found that both the sequential tunneling and the thermionic emission contributions to the dark current increase as the wavelength of the detector is extended from the\ud mid- to far-infrared. Dark current designs rules are derived

Year: 2001
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