Bismuth selenide

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Bismuth selenide
Names
IUPAC name
selenoxobismuth, selanylidenebismuth [1]
Identifiers
  • 12068-69-8 checkY
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.901 Edit this at Wikidata
EC Number
  • 235-104-7
UNII
  • InChI=1S/2Bi.3Se
    Key: OMEPJWROJCQMMU-UHFFFAOYSA-N
  • [Se-2].[Se-2].[Se-2].[Bi+3].[Bi+3]
Properties
Bi2Se3
Molar mass 654.8 g/mol [2]
Appearance Dull grey [3]
Density 6.82 g/cm3[2]
Melting point 710 °C (1,310 °F; 983 K)[2]
insoluble
Solubility insoluble in organic solvents
soluble in strong acids [2]
Structure
rhombohedral
Thermochemistry
Std enthalpy of
formation (ΔfH⦵298)
 -140 kJ/mol
Hazards
Main hazards Toxic [3]
NFPA 704 (fire diamond)
2
0
0
Related compounds
Other anions
 Bismuth(III) oxide
Bismuth trisulfide
Bismuth telluride
Other cations
 Arsenic triselenide
Antimony triselenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY  (what is checkY☒N ?)
Infobox references

Bismuth selenide (Bi2Se3) is a gray compound of bismuth and selenium also known as bismuth(III) selenide. It is a semiconductor and a thermoelectric material.[4] In its pure state it has a topological insulator ground-state.[5] While perfect stoichiometric bismuth selenide should be a semiconductor (with a gap of 0.3 eV) naturally occurring selenium vacancies act as electron donors and it often acts as a semimetal in its as grown phase.[6][7] Topologically protected Dirac cone surface states have been observed in Bismuth selenide and its insulating derivatives leading to intrinsic topological insulators,[6][8][9][10] which later became the subject of world-wide scientific research.[11][12][13][14]

See also[]

References[]

  1. ^ "Bismuth(III) selenide - PubChem Public Chemical Database". Pubchem.ncbi.nlm.nih.gov. 2011-10-21. Retrieved 2011-11-01.
  2. ^ a b c d "bismuth selenide | Bi2Se3". ChemSpider. Retrieved 2011-11-01.
  3. ^ a b "Bismuth Selenide | Bismuth Selenide". Espimetals.com. Archived from the original on 2011-09-08. Retrieved 2011-11-01.
  4. ^ Mishra, S K; S Satpathy; O Jepsen (1997-01-13). "Electronic structure and thermoelectric properties of bismuth telluride and bismuth selenide". Journal of Physics: Condensed Matter. 9 (2): 461–470. Bibcode:1997JPCM....9..461M. doi:10.1088/0953-8984/9/2/014. hdl:10355/9466. ISSN 0953-8984.
  5. ^ Xia, Y.; Qian, D.; Hsieh, D.; Wray, L.; Pal, A.; Lin, H.; Bansil, A.; Grauer, D.; Hor, Y. S.; Cava, R. J.; Hasan, M. Zahid (2009). "Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface". Nature Physics. arXiv:0908.3513. doi:10.1038/nphys1274. ISSN 1745-2473.
  6. ^ a b Xia, Y; Qian, D; Hsieh, D; Wray, L; Pal, A; Lin, H; Bansil, A; Grauer, D; Hor, Y. S; Cava, R. J; Hasan, M. Z (2009). "Observation of a large-gap topological-insulator class with a single Dirac cone on the surface". Nature Physics. 5 (6): 398–402. Bibcode:2009NatPh...5..398X. doi:10.1038/nphys1274.
  7. ^ Hor, Y. S.; A. Richardella; P. Roushan; Y. Xia; J. G. Checkelsky; A. Yazdani; M. Z. Hasan; N. P. Ong; R. J. Cava (2009-05-21). "p-type Bi_{2}Se_{3} for topological insulator and low-temperature thermoelectric applications". Physical Review B. 79 (19): 195208. arXiv:0903.4406. Bibcode:2009PhRvB..79s5208H. doi:10.1103/PhysRevB.79.195208. S2CID 119217126.
  8. ^ Hsieh, D.; Y. Xia; D. Qian; L. Wray; J. H. Dil; F. Meier; J. Osterwalder; L. Patthey; J. G. Checkelsky; N. P. Ong; A. V. Fedorov; H. Lin; A. Bansil; D. Grauer; Y. S. Hor; R. J. Cava; M. Z. Hasan (2009). "A tunable topological insulator in the spin helical Dirac transport regime". Nature. 460 (7259): 1101–1105. arXiv:1001.1590. Bibcode:2009Natur.460.1101H. doi:10.1038/nature08234. ISSN 0028-0836. PMID 19620959. S2CID 4369601.
  9. ^ Hasan, M. Zahid; Moore, Joel E. (2011-02-08). "Three-Dimensional Topological Insulators". Annual Review of Condensed Matter Physics. 2 (1): 55–78. arXiv:1011.5462. Bibcode:2011ARCMP...2...55H. doi:10.1146/annurev-conmatphys-062910-140432. ISSN 1947-5454. S2CID 11516573.
  10. ^ Xu, Yang; Miotkowski, Ireneusz; Liu, Chang; Tian, Jifa; Nam, Hyoungdo; Alidoust, Nasser; Hu, Jiuning; Shih, Chih-Kang; Hasan, M. Zahid; Chen, Yong P. (2014). "Observation of topological surface state quantum Hall effect in an intrinsic three-dimensional topological insulator". Nature Physics. 10 (12): 956–963. arXiv:1409.3778. Bibcode:2014NatPh..10..956X. doi:10.1038/nphys3140. ISSN 1745-2481. S2CID 51843826.
  11. ^ Hasan, M. Z.; Kane, C. L. (2010-11-08). "Colloquium: Topological insulators". Reviews of Modern Physics. 82 (4): 3045–3067. arXiv:1002.3895. Bibcode:2010RvMP...82.3045H. doi:10.1103/RevModPhys.82.3045. S2CID 16066223.
  12. ^ "The Strange Topology That Is Reshaping Physics". Scientific American. Retrieved 2020-04-22.
  13. ^ "Welcome to the Weird Mathematical World of Topology". Discover Magazine. Retrieved 2020-04-22.
  14. ^ Ornes, Stephen (2016-09-13). "Topological insulators promise computing advances, insights into matter itself". Proceedings of the National Academy of Sciences. 113 (37): 10223–10224. doi:10.1073/pnas.1611504113. ISSN 0027-8424. PMC 5027448. PMID 27625422.
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