Boron arsenide
From Wikipedia, the free encyclopedia
| Boron arsenide | |
|---|---|
| Image:Boron arsenide.jpg | |
| General | |
| Other names | |
| Molecular formula | BAs |
| Molar mass | 85.733 g/mol |
| Appearance | |
| CAS number | [] |
| 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 ΔfH°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, εr, 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.
Contents |
[edit] Applications
Solar cells can be fabricated from boron arsenide.
[edit] 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
[edit] External links
- Fiz Chemie Berlin thermophysical database entry
- Matweb data
