Sensitive Planar Semiconductor Detector From Microwave to IR Applications

In this paper, we propose a novel concept for a semiconductor planar detector. At room temperature, the diode exhibits markedly high responsivity and strong spectral dependence of it: the responsivity value around 2000 V/W is inherent in K ¿ microwave frequency range, and while going up to frequency...

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Bibliographic Details
Published in:IEEE sensors journal 2010-03, Vol.10 (3), p.662-667
Main Authors: Gradauskas, J., Suziedelis, A., Asmontas, S., Sirmulis, E., Kazlauskaite, V., Lucun, A., Vingelis, M.
Format: Article
Language:English
Subjects:
Carbon monoxide
Detectors
Diodes
Gas detectors
Infrared detectors
Infrared radiation
IR detectors
Lasers
Masers
microwave detectors
Microwave frequencies
Microwaves
Optical pulses
Radiation detectors
Semiconductor diodes
semiconductor heterojunctions
Semiconductors
Spectra
submillimeter wave detectors
Temperature dependence
Temperature distribution
Temperature sensors
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Summary:In this paper, we propose a novel concept for a semiconductor planar detector. At room temperature, the diode exhibits markedly high responsivity and strong spectral dependence of it: the responsivity value around 2000 V/W is inherent in K ¿ microwave frequency range, and while going up to frequency range D , it decreases by about two orders. Rectification of microwave currents and intervalley electromotive force are discussed to be mainly responsible for high responsivity and its rapid decrease within microwave range. Nevertheless, experiments at higher radiation frequencies performed under the action of pulsed CO 2 laser radiation reveal the planar diode as a fast IR detector and a promising candidate for terahertz radiation sensing.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2009.2038654