Magnus Craford, US electrical engineer

Magnus Craford, US electrical engineer

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Credit: Department of Physics, University of Illinois at Urbana-Champaign, courtesy AIP Emilio Segre Visual Archives /SCIENCE PHOTO LIBRARY

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Caption: Magnus Craford (born 1963), US electrical engineer. Craford is best known for his work on light emitting diodes (LEDs). In 1972 he invented the first yellow LED along with red and red-orange LEDs. He developed nitrogen-doped GaAsP (gallium arsenide phosphide) and pioneered the development of AlInGaP (aluminium gallium indium phosphide) LEDs as well as AlGaAs (aluminium gallium arsenide) and InGaN (indium gallium nitride) products.

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