Papers on "The Solid State Physics of the Light Emitting Diode" and similar term paper topics

Paper #047644 :: The Solid State Physics of the Light Emitting Diode
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How LEDs work and their future.

Written in 2002; 2,006 words; 5 sources; MLA; $ 63.95

Paper Summary:

This paper discusses how light emitting diodes (LEDs) work, materials used to make them, their significance in everyday appliances, and what they may be used for in the future by employing new technologies. The full utility of these devices has not yet been realized; they are highly efficient and have many applications in illumination and storage technology. This paper "sheds some light" on the many uses for this seemingly simple device.

From the Paper:

"Before discussing semiconductors and semiconductor devices we should first cover the basics of conduction. Conductivity of a material is dependent on three factors. First is the number of charge carriers per unit volume or carrier density. Charge carriers can be electrons, holes or ions or any combination thereof. The second factor is the charge per carrier. This is typically measured in Coulombs so it is the elementary charge in the case of electrons and holes or is the charge of the ion in that case. The third factor is the charge mobility. This factor is a little more complicated and will be covered in more depth later. It is dependent, however, on acceleration of the carrier, dependent on electric field strength, and the average time between collisions, which is dependent on temperature and defect concentration. The conductivity is then the product of these three terms."

Tags: electrical engineering materials

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