photoconductive detector

photoconductive detector

A photoconductive cell used to detect photons in the infrared, usually made from either germanium or silicon doped with a variety of other metals, e.g. copper, arsenic, antimony. These detectors are used at wavelengths from about 10 to 200 μm, with liquid-helium cooling. In contrast to bolometers, the responsive elements of photoconductive detectors undergo no significant temperature change. See also infrared detectors.
References in periodicals archive ?
This value is comparable to or better than those obtained in the Ti[O.sub.2]-based UV-A detector [9], the ZnO/LaAl[O.sub.3] UV-A detector [10], and the epitaxial MgZnO UV photoconductive detector [14].
Shen, "Ultraviolet photoconductive detector based on epitaxial [Mg.sub.0.34][Zn.sub.0.66]O thin films," Applied Physics Letters, vol.
[15] suffered from rather large dark currents of 9 [micro]A and 50 nA, respectively, which are inherent to photoconductive detectors.
The PbS photoconductive detector can be used for measuring NIR radiation.
Abstract: The infrared radiation measurement system based on the cooled PbS photoconductive detector with a preamplifier and a mechanical chopper in the moisture meter with one beam is designed by the authors and analyzed in this paper.
Moreover, it consists of a PbS based photoconductive detector with the Peltier one stage cooler, a preamplifier with the power source frequency filter and a signal processing circuit.
The characteristics of PbS photoconductive detectors such as high detection levels in wavelengths of between 1000nm and 3200nm, good response speed and reasonable price, mean that they can be used in various applications for the moisture detection due to one distinctive absorption wavelength of water at 1940nm[2].
These devices include photodiodes, silicon photomultipliers, photomultiplier tubes, scientific light sources, infrared detectors, photoconductive detectors, and image sensors.
These devices include photodiodes, photomultiplier tubes, scientific light sources, infrared detectors, photoconductive detectors, and image sensors.
Balazs, Noise characteristics of bootstrappcd photovoltaic and photoconductive detectors, SPIE Proc., S.