Far-Infrared Germanium Detectors
- 1 June 1968
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 7 (6) , 611-618
- https://doi.org/10.1143/jjap.7.611
Abstract
Two types of far-infrared Ge detectors have been investigated. One is a photoconductivity-type detector, utilizing photo-excitations from the shallow donors (Sb) or acceptors (In) in Ge. The impurity concentration of this type in the range from 6×1014cm-3to 5×1015cm-3. These detectors exhibit photoresponse over the wavelength region of 50∼120 µ and their response-time is less than 1 µsec. The other detector is of bolometer type, making use of energy absorption by the free carriers of the impurity conduction. The concentration of In impurity is about 7×1016cm-3. The detector of this type has a photoresponse over the wavelengths of 20∼1000 µ and the response-time is about 300 µsec.Keywords
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