STUDY OF COMPLEX RESISTANCE OF SELENIUM RECTIFIERS

Selenium has good photovoltaic and photoconductive properties, and it is widely used in electronics such as photocells, photometers, and solar cells. The second largest use of selenium is in the glass industry: selenium is used to remove color from glass, and to give a red color to glasses and enamels. Selenium can also be used in photocopying and toning of photographs. Its artistic use is to enhance and expand the tonal range of black and white photographic images. Other uses of selenium are in metal alloys such as lead plates used in battery cells and rectifiers to convert AC current to DC current. Selenium is used to increase wear resistance in vulcanized rubbers. Some selenium compounds are added to anti-dandruff shampoos. The presence and nature of the n semiconductor in selenium rectifiers was judged by the element's thermal and electrical properties. Selenium rectifiers are made of aluminum or steel plates coated with bismuth or nickel about 1 μm .Researching the thermal conductivity of selenium, the effect of various additives on it, and its changes depending on its crystal structure are of both scientific and practical importance.