Editing Gallium arsenide (section)

== History ==
Gallium arsenide was first synthesized and studied by [[Victor Goldschmidt]] in 1926 by passing arsenic vapors mixed with hydrogen over [[gallium(III) oxide]] at 600&nbsp;°C.<ref>{{Cite journal |last=V. M. |first=Goldschmidt |title=Geochemische Verteilungsgesetze der Elemente |url=https://books.google.com/books?id=_J4bAAAAMAAJ&q=Ga+As |journal=Skrifter udgivne af Videnskabsselskabet i Christiania. I. Mathematisk-naturvidenskabelig klasse |language=de |publisher=I kommisjon hos Jacob Dybwad |publication-place=Oslo |publication-date=1926 |issue=8 |pages=34, 100}}</ref><ref>{{Cite web |last=PubChem |title=Hazardous Substances Data Bank (HSDB) : 4376 |url=https://pubchem.ncbi.nlm.nih.gov/source/hsdb/4376#section=Methods-of-Manufacturing-(Complete) |access-date=2024-10-09 |website=pubchem.ncbi.nlm.nih.gov |language=en}}</ref> The semiconductor properties of GaAs and other [[Compound semiconductor|III-V compounds]] were patented by [[Heinrich Welker]] at [[Siemens-Schuckert]] in 1951<ref>{{US patent|2798989A}}</ref> and described in a 1952 publication.<ref>{{Cite journal |last=Welker |first=H. |date=1952-11-01 |title=Über neue halbleitende Verbindungen |url=https://www.degruyter.com/document/doi/10.1515/zna-1952-1110/html |journal=Zeitschrift für Naturforschung A |language=en |volume=7 |issue=11 |pages=744–749 |doi=10.1515/zna-1952-1110 |issn=1865-7109|doi-access=free }}</ref> Commercial production of its monocrystals commenced in 1954,<ref name="Schubert-2023">{{Cite book |last=Schubert |first=E. Fred |url=https://books.google.com/books?id=WE2zEAAAQBAJ&pg=PA2 |title=Light-Emitting Diodes (4th Edition, 2023) |date=2023-03-11 |publisher=E. Fred Schubert |isbn=978-0-9863826-7-3 |language=en}}</ref> and more studies followed in the 1950s.<ref>{{Cite journal |last=Straumanis |first=M. E. |last2=Kim |first2=C. D. |date=1965-08-10 |title=Phase extent of gallium arsenide determined by the lattice constant and density method |url=https://journals.iucr.org/paper?S0365110X65003183 |journal=Acta Crystallographica |language=en |volume=19 |issue=2 |pages=256–259 |doi=10.1107/S0365110X65003183 |issn=0365-110X|url-access=subscription }}</ref> First infrared LEDs were made in 1962.<ref name="Schubert-2023" />