The History of Semiconductor Systems
There is a divided class of matters which is named quasi-conductors. Scientists got known about these materials in the end of the 19th century, but just in the 20th century scientists managed to obtain more knowledge about them. The first successful experiment was carried out by the Russian scientists in 1923. They proved that semiconductors may be used to generate fluctuations. There was no possibility to create some unique devices as igbt modules. The most considerable event in the history of semiconductor devices was the invention of the first transistor by Bell corporation in 1949. Since then a lot of persons all over the world become interested in such kind of substance as semiconductors.
The interest to optical features of semiconductors revived because of discovery of induced emission in semiconductors. It led to the creation of semiconductor laser device based on usage of p - n barriers and then on heterojunction.
Today's producers may propose a broad range of different semiconductor devices to their customers, for instance pulsed power devices. In case there were no semiconductor devices used in the newest technologies, we won't have a possibility to carry out such great experiments which are important for other sciences.
Semiconductors are a broad kind of substances which are characterized by the value of conductivity that is situated between the conductivities of metals and isolators. Such substances as germanium, silicon, selenium and several others are believed to be semiconductors.
For very long period of time semiconductors haven't drawn the attention of physicists and engineers. The first experiments of semiconductors were begun by well-known Russian physicist Abram Ioffe. He found that semiconductors are the divided type of crystals with some unique features. Every semiconductor system has such main features as electron and hole conduction. These characteristics may be changed by means of adding some admixtures or modifying temperature. For instance, by usage of some admixtures the value of electron conduction may be changed.
Almost every area of newest technologies means use of semiconductors. Diodes, transistors and thyristors are the most frequently utilized devices. The wide application of semiconductors began not so long ago but nowadays they are really broadly utilized. There are systems based on semiconductors that may turn luminous and heat energy into electricity and vice versa. Some of them are even able to develop cold and heat. Semiconductors perform the basic functions in many different devices: atomic batteries, quantum generators, processors and even primitive radio receivers. Workers can't do without semiconductor rectifiers, changers, current sensors and amplifiers. If we compare devices operating on semiconductors and tube systems we will see that semiconductors are considerably smaller and lighter. When semiconductors are utilized some significant characteristics as power and reliability are being developed a lot.
From day to day we may hear about some modern inventions which help people to have more conveniences or even save the life.
current sensors diodes fuses igbt modules power resistors semiconductor assembly