Journal of Undergraduate Research
Keywords
nanocrystal LED, light emitting diode, light, semiconductor device
College
Physical and Mathematical Sciences
Department
Physics and Astronomy
Abstract
A light emitting diode (LED) is a semiconductor device that gives off light. An LED works by the combination of electrons and electron holes (a moving, positive charge caused by missing electrons). As the electron and electron hole combine, the electron joins the atom in an excited state (some greater than minimum energy level). The high-energy electron will then decay into a lower energy state by emitting a photon, a packet of energy. LEDs are useful for many reasons. For example, they are extremely efficient in converting electricity into light (unlike conventional tungsten bulbs), they do not get very hot, and the light produced is all of a similar wavelength and can be used for making displays.
Recommended Citation
Owen, Jorj Ian and Davis, Dr. Robert C.
(2014)
"A New Light at the End of the Tunnel: Steps toward a Nanocrystal LED,"
Journal of Undergraduate Research: Vol. 2014:
Iss.
1, Article 1275.
Available at:
https://scholarsarchive.byu.edu/jur/vol2014/iss1/1275