Semiconductors are believed to be a special class of chemical elements. Scientists got known about these substances in the end of the 19th century, but just in the 20th century scientists managed to get more knowledge about them. The first successful experiment was carried out by the Russian scientists in 1923. They proved that semiconductors can be utilized to accelerate fluctuations. During further years diodes were ejected by tubes. The most considerable event in the history of semiconductor devices was the creation of the first transistor by Bell corporation in 1949. Since then many people all over the world become interested in such type of substance as semiconductors.
Many physicists carry out a great deal of researches just to gain more knowledge about such characteristic of semiconductors as stimulated emission. By means of such principles as p - n barriers and heterojunction physicists managed to create laser device in the beginning of the 60's.
current sensors diodes fuses igbt modules power resistors semiconductor assembly