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gallium arsenide

noun, Chemistry
a crystalline and highly toxic semiconductor, GaAs, used in light-emitting diodes, lasers, and electronic devices.
1960-65 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for gallium arsenide
  • The researchers layered two semiconducting materials, indium gallium arsenide and aluminum indium arsenide, into a single wafer.
  • The films contain gallium arsenide, a mixture of the elements gallium and arsenic that acts as a semiconductor in solar cells.
  • Previous experiments had managed the feat at ultra-cold temperatures, or by using exotic semiconductors such as gallium arsenide.
  • At best, you'll have an atomically thin programmable layer sitting on a bed of silicon or gallium arsenide.
  • The new semiconductor material is based on gallium arsenide.
  • gallium arsenide is capable of converting electricity directly into coherent light.
  • The first was for gallium arsenide semi-insulating wafers.
gallium arsenide in Science
gallium arsenide  
A dark-gray crystalline compound used in transistors, solar cells, and semiconductor lasers. Chemical formula: GaAs.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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