The History of Semiconductor Inventions

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Semiconductors are the detached type of substances. At first this unique type was discovered in the 1890's but more completely it began to be discovered just after the First World War in Europe and in Soviet Union. The first successful experiment was performed by the Russian physicists in 1923. They proved that semiconductors can be utilized to accelerate fluctuations. But such devices as diodes that are utilized nowadays were invented significantly later. First transistor was developed in Bell's laboratory in 1949. That event impacted on the quick development of semiconductor devices. The intensive studying of the features of semiconductors was begun at the same time.

The concern to optical characteristics of semiconductors revived due to research of induced emission in semiconductors. By usage of such principles as p - n barriers and heterojunction scientists managed to design laser device in the beginning of the 60's.

Today we may see a huge amount of various pulsed power devices which work with help of usage of semiconductors. Nowadays it is not possible to perform any experiments without some modern technologies which are founded on use of semiconductors.

Semiconductors are a wide class of substances that are characterized by the value of conductivity which lies between the conductivities of metals and isolators. There are some elements that are basically utilized to develop the semiconductor devices. They are germanium, selenium, silicon, etc.

For quite long period of time semiconductors haven't drawn the attention of physicists and engineers. The first man that decided to get more knowledge about semiconductors was Abram Ioffe - Russian physicist. He found that semiconductors are the divided class of crystals with some unique features. Any semiconductor device has got such basic characteristics as electron and hole conduction. These features can be changed by means of adding some admixtures or modifying temperature. For instance, by usage of some admixtures the value of electron conduction can be changed.

Almost every area of newest technologies means usage of semiconductors. Diodes, transistors and thyristors are the most often used devices. The wide application of semiconductors began not so long ago but nowadays they are really broadly used. They are used to transform light and heat energy into electric energy and vice versa. Heat and cold can be produced by some kinds of semiconductors. Semiconductors perform the basic functions in many different devices: atomic batteries, quantum generators, processors and even simple radio receivers. Such devices as power resistors are commonly utilized in any construction related to the electricity. The mass and size of semiconductor devices are significantly smaller than their tube variants. When semiconductors are utilized some important features as power and reliability are being improved much.

Day after day we can hear about some newest systems that assist humanity to have more conveniences or even save the lives.

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