Compound semiconductor

Compound semiconductor

A compound semiconductor is a semiconductor compound composed of elements from two or more different groups of the periodic table [1]. These semiconductors typically form in groups 13-16 (old groups III-VI), for example of elements from group 13 (old group III, Boron, Aluminium, Gallium, Indium) and from group 15 (old group V, Nitrogen, Phosphorus, Arsenic, Antimony, Bismuth). The range of possible formulae is quite broad because these elements can form binary (two elements, e.g. Gallium(III) arsenide (GaAs)), ternary (three elements, e.g. Indium gallium arsenide (InGaAs)) and quaternary (four elements, e.g. Aluminium gallium indium phosphide(AlInGaP)) alloys.

Contents

Examples

For compound families and other examples see list of semiconductor materials.

Fabrication

Metalorganic vapour phase epitaxy (MOVPE) is the most popular deposition technology for the formation of compound semiconducting thin films for devices[citation needed]. It uses ultrapure metalorganics and / or hydrides as precursor source materials in an ambient gas such as hydrogen.

Other techniques of choice include:

Resources

An interesting online resource for compound semiconductors and their fabrication, Britney's Guide to Semiconductor Physics [2], is also available as reference material for semiconductor scientists and non-scientists.

References

  1. ^ http://www.onr.navy.mil/sci_tech/31/312/ncsr/glossary.asp#C
  2. ^ http://britneyspears.ac/lasers.htm

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