Photodetectors and photodetector units based on ÐbS and ÐbSå in spectral response range 1-5,5 µm.Development of lead chalcogenide photoresistors (ÐbS, ÐbSå) has begun in the USSR in 1944-1946. The urgency of this development is kept till now. Photodetectors based on these materials are characterized by high sensitivity in spectral range 1-3,5 microns (ÐbS) and 3-5,5 microns (ÐbSå), work without cooling or cooling by small-sized thermoelectric coolers. The optimum operating mode is reached at 195 K (fig. 1). Over 25 years the enterprise developed multielement photodetectors and photodetector assemblies based on lead sulfide for space thermal warmers. It has been consistently created three generations of photodetectors, and each of them has worked in space in the equipment installed in telescopes, and completely met complex of requirements. The most interesting development is development of ÐbSå-photoresistors’ rulers with thermoelectric cooling for thermal vision systems. For 60 years of work our enterprise developed hundreds cooled, without cooling, immersion, multi-colour, multielement (linear and matrix) and other photoresistors and photodetectors, many of which have been produced on serial factories of Russia and the CIS. It, in turn, has provided development and a batch production of various complexes for defensive and civil technical equipment. Low element photodetectors based on PbS Multielement photodetectors based on PbSe Single element cooled photoresistors based on PbS |