Boron arsenide

Boron arsenide
Image:Boron arsenide.jpg
General
Other names
Molecular formula	BAs
Molar mass	85.733 g/mol
Appearance
CAS number	[12005-69-5]
Properties
Density and phase	5.22 g/cm³, solid
Solubility in water	Insoluble
Melting point	2027 °C
Boiling point	°C
Lattice constant	4.777Å
Thermodynamic data
Standard enthalpy of formation Δ_fH°_solid	−0 kJ/mol
Standard molar entropy S°_solid	J.K⁻¹.mol⁻¹
Hazards
EU classification	Dangerous for the environment (N)
R-phrases
S-phrases
NFPA 704
Supplementary data page
Structure and properties	n, ε_r, etc.
Thermodynamic data	Phase behaviour Solid, liquid, gas
Spectral data	UV, IR, NMR, MS
Regulatory data	Flash point, RTECS number, etc.
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.

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.

[edit] Applications

Solar cells can be fabricated from boron arsenide.

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