Light-emitting Diode: The LED

What development has the LED has already undergone and what awaits us in the future of light emitting diodes (led), short LED BBs, are semiconductor devices that produce light when the flow of electricity. Compared to temperature radiators, BBs produce only narrow-band radiation LED. Although the first findings of the LED technology dating back to the 19th century, it was not until the 1990s, before LED BBs could be used efficiently. LED-lamps in different shapes and colors are offered today, lamps shops offer numerous models for this purpose. The history of LED technology which extends scientific discovery of LED technology back in the 19th century, when Ferdinand Braun explored the power line by crystals. There, he discovered that when applying power this well flowed in one direction, in the other direction, however, hardly.

In the following years, various researchers also discover that inorganic substances with applied voltage can produce light. Until 1962, however, the first light-emitting diodes were offered by the company General Electric. Thus was the cornerstone for global use BBs the LED, which could effectively be increased from year to year. BBs were used initially only red LED, later also the colours green, red and Orange were little available. In the early 1980s high efficient red diodes outperformed even the effectiveness of incandescent light bulbs, which they were deployed in certain areas, for example in signal lights or display panels. This LED to BBs in almost all colors are produced and used. Today’s research development mainly to the higher efficiency of the lights, as well as a cheaper production of semiconductors.

Continue to establish transparent substrates and semiconductor materials and to use research it. The semiconductor technology semiconductors is mainly based on the light-emitting diode as a supporting element. Solid state are called semiconductors here, which are conductive, non-conductive, however, under other conditions under certain conditions.

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