Posted on February 3rd, 2009 by by admin

The History of Light-Emitting Diode Development

How were LED lights discovered? In fact it was not more than a coincidence. It featured the semiconductor Silicon Carbide (SiC). Suddenly in the first years of the twentieth century it was stated that it emitted light if electrified. Why wasn’t the invention then developed? Because the light emitted wasn’t really bright to be used somewhere. Luckily that didn’t suppose that the invention wouldn’t be worked on in some time.

Some specialists from Germany and Russia continued working with the idea of such light production but it happened only in twenty years. But the project wasn’t popular as the scientists didn’t seem to turn those lights brighter. Then the term electroluminescence first appeared in the report of 1936 and the researchers got interested in led neon kits once more. The new science was still not too successful then. Finally the development turned better in the fifties when the following researches were made by some British scientists. So infrared LED appeared. As a result the first visible spectrum light-emitting diode was produced, it was made with Gallium Phosphide (GaP) and shined red.

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