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Nick Holonyak
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Nick Holonyak, Jr. (born November 3, 1928) is an American engineer and educator. He is noted particularly for his 1962 invention of a light-emitting diode (LED) that emitted visible red light instead of infrared light; Holonyak was then working at the General Electric Company's research laboratory in Syracuse, New York. He is a John Bardeen Endowed Chair Emeritus in Electrical and Computer Engineering and Physics at the University of Illinois at Urbana-Champaign, where he has been since leaving General Electric in 1963.
==Inventions==
In addition to introducing the III-V alloy LED, Holonyak holds 41 patents. His other inventions include the red-light semiconductor laser, usually called the laser diode (used in CD and DVD players and cell phones) and the shorted emitter p-n-p-n switch (used in light dimmers and power tools).
In 2006, the American Institute of Physics decided on the five most important papers in each of its journals since it was founded 75 years ago. Two of these five papers, in the journal ''Applied Physics Letters'', were co-authored by Holonyak. The first one, coauthored with S. F. Bevacqua in 1962, announced the creation of the first visible-light LED. The second, co-authored primarily with Milton Feng in 2005, announced the creation of a transistor laser that can operate at room temperatures. Holonyak predicted that his LEDs would replace the incandescent light bulb of Thomas Edison in the February 1963 issue of ''Reader's Digest'', and as LEDs improve in quality and efficiency they are gradually replacing incandescents as the bulb of choice.
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