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Boron arsenide



Boron arsenide
Identifiers
CAS number 12005-69-5
Properties
Molecular formula BAs
Molar mass 85.733 g/mol
Density 5.22 g/cm3, solid
Melting point

2027 °C

Boiling point

°C

Solubility in water Insoluble
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−0 kJ/mol
Standard molar
entropy
So298
J.K−1.mol−1
Hazards
EU classification Dangerous for the environment (N)
Related Compounds
Other anions Boron nitride
Boron phosphide
Boron antimonide
Other cations Aluminium arsenide
Gallium arsenide
Indium arsenide
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Boron arsenide is a chemical compound of boron and arsenic. It is a cubic (sphalerite) semiconductor with a lattice constant of 0.4777 nm and an indirect bandgap of roughly 1.5 eV. It can be alloyed with gallium arsenide.

Additional recommended knowledge

Boron arsenide also occurs as an icosahedral boride, B12As2. http://spectra.phy.bris.ac.uk/research_semiconductor.asp This form can be grown on substrates such as silicon carbide.

Applications

Solar cells can be fabricated from boron arsenide.

References

    • Boron Chemistry at the Millennium, Editor: R.B. King, Elsevier Science & Technology (1999) ISBN 978-0-444-72006-1
    • Ordered Boron Arsenide, P. D. Ownby, Journal of the American Ceramic Society, vol. 58, 7-8, pp 359-360, 1975.
    • BAs and boride III-V alloys, Gus L. W. Hart and Alex Zunger, Phys. Rev. B vol. 62, 13522 (2000) http://arxiv.org/abs/cond-mat/0009063
     
    This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Boron_arsenide". A list of authors is available in Wikipedia.
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