Temperature detector PbSe

CO2air qualityfor medical applications

Polycrystalline lead selenide (PbSe) is a standard semiconductor detector with a sensitivity of between 1 µm and 5.2 µm. Description The resistance of photoconductive detectors depends on the incident light. PbSe has a particularly strong inner photoelectric effect: When infrared light reaches the lead selenide detector, the resistance is reduced. The detectors can be used uncooled at a wavelength of up to 4.7 µm. At room temperature, they exhibit a detectivity D* of greater than 1010. At low temperatures, they achieve an even higher performance level; in addition, the wavelength shifts to 5.2 µm. PbSe photodetectors feature a good price-to-performance ratio at a high sensitivity and a good time constant. Application Fields PbSe detectors react very quickly and are thus particularly well suited for high-speed applications, such as, for example, the detection of hot spots. They are also used in medical gas analysis (CO2 measurements), emissions measurements in the industrial field and the automobile industry, and in the measurement of moisture and hydrocarbons