boron phosphide

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| Watchedfields = changed

| verifiedrevid = 427708720

| ImageFile = Boron-phosphide-unit-cell-1963-CM-3D-balls.png

| ImageSize =

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| OtherNames =

|Section1={{Chembox Identifiers

| CASNo_Ref = {{cascite|correct|??}}

| CASNo = 20205-91-8

| ChemSpiderID = 79763

| EC_number = 243-593-3

| PubChem = 88409

| StdInChI=1S/BP/c1-2

| StdInChIKey = FFBGYFUYJVKRNV-UHFFFAOYSA-N

| SMILES1 = [B+3].[P-3]

| SMILES2 = B#P

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|Section2={{Chembox Properties

| Formula = BP

| MolarMass = 41.7855 g/mol

| Appearance = maroon powder

| Density = 2.90 g/cm³

| MeltingPtC = 1100

| MeltingPt_notes = (decomposes)

| BoilingPt =

| Solubility =

| BandGap = 2.1 eV (indirect, 300 K){{cite book | author = Madelung, O. | title = Semiconductors: Data Handbook | year = 2004 | publisher = Birkhäuser | isbn = 978-3-540-40488-0 | pages = 84–86 | url = https://books.google.com/books?id=v_8sMfNAcA4C&pg=PA84 }}

| ThermalConductivity = 4.6 W/(cm·K) (300 K)

| RefractIndex = 3.0 (0.63 μm)

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|Section3={{Chembox Structure

| SpaceGroup = F{{overline|4}}3m

| CrystalStruct = Zinc blende

| Coordination = Tetrahedral

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|Section7={{Chembox Hazards

| MainHazards =

| FlashPt =

| AutoignitionPt =

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Boron phosphide (BP) (also referred to as boron monophosphide, to distinguish it from boron subphosphide, B₁₂P₂) is a chemical compound of boron and phosphorus. It is a semiconductor.{{cite journal |author1=Popper, P. |author2=Ingles, T. A. | title = Boron Phosphide, a III–V Compound of Zinc-Blende Structure | journal = Nature | year = 1957 | volume = 179 |issue=4569 | page = 1075 | doi = 10.1038/1791075a0 |bibcode=1957Natur.179.1075P | doi-access = free }}

History

Crystals of boron phosphide were synthesized by Henri Moissan as early as 1891.{{cite journal | author = Moissan, H. | title = Préparation et Propriétés des Phosphures de Bore | journal = Comptes Rendus | volume = 113 | year = 1891 | pages = 726–729 | url = http://visualiseur.bnf.fr/CadresFenetre?O=NUMM-3069&I=726&M=tdm }}

Appearance

Pure BP is almost transparent, n-type crystals are orange-red whereas p-type ones are dark red.{{cite book | author = Berger, L. I. | title = Semiconductor Materials | publisher = CRC Press | year = 1996 | isbn = 978-0-8493-8912-2 | url = https://archive.org/details/semiconductormat0000berg | url-access = registration | page = [https://archive.org/details/semiconductormat0000berg/page/116 116] }}

Chemical properties

BP is not attacked by acids or boiling aqueous alkali water solutions. It is only attacked by molten alkalis.

Physical properties

BP is known to be chemically inert and exhibit very high thermal conductivity.{{cite journal |author1=Kang, J. |author2=Wu, H. | author3=Hu, Y.| title = Thermal Properties and Phonon Spectral Characterization of Synthetic Boron Phosphide for High Thermal Conductivity Applications | journal = Nano Letters| year = 2017 | volume = 17 |issue=12 |pages=7507–7514 | doi = 10.1021/acs.nanolett.7b03437 | pmid = 29115845 |bibcode=2017NanoL..17.7507K }} Some properties of BP are listed below:

lattice constant 0.45383 nm
coefficient of thermal expansion 3.65{{e|−6}} /°C (400 K)
heat capacity C_P ~ 0.8 J/(g·K) (300 K)
Debye temperature = 985 K
Bulk modulus 152 GPa
relatively high microhardness of 32 GPa (100 g load).
electron and hole mobilities of a few hundred cm²/(V·s) (up to 500 for holes at 300 K)
high thermal conductivity of ~ 460 W/(m·K) at room temperature

boron phosphide

History

Appearance

Chemical properties

Physical properties

See also

References

Further reading