Platinum silicide

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Crystal structure
Crystal structure of platinum silicide
__ Pt      __ Si
General
Surname Platinum silicide
other names

Platinum monosilicide

Ratio formula PtSi
External identifiers / databases
CAS number 12137-83-6
Wikidata Q7202390
properties
Molar mass 223.17 g mol −1
Physical state

firmly

density

12.4 g cm −3

Melting point

1229 ° C

safety instructions
GHS hazard labeling
no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Platinum silicide is a chemical compound of platinum from the group of silicides .

Extraction and presentation

Platinum silicide can be obtained by reacting platinum with silicon or silicon dioxide . Since platinum crucibles are used in chemical research, the formation of platinum silicide makes itself unpleasant when glowing substances containing silicon dioxide in a mixture with carbon in them. The crucible becomes brittle. Free silicon destroys platinum devices immediately when it is red hot.

properties

Platinum silicide is an off-white solid. It has an orthorhombic crystal structure of the manganese phosphide type with the space group Pnma (space group no. 62) . It has a resistance of 31–38 μΩ / cm. Template: room group / 62

use

Platinum silicide is used as a material for infrared detectors and infrared cameras . It is also used as a material for Schottky diodes . It is also used as a contact material in electronic circuits.

Related links

In addition to platinum silicide, diplatin silicide (Pt 2 Si, CAS number: 12137-86-9, two modifications) and platinum disilicide (PtSi 2 , CAS number: 52014-52-5) at least two other platinum silicides are known. Phases with the composition Pt 6 Si 5 , Pt 12 Si 5 and Pt 3 Si can also be produced in flat films (thickness d <1000 Å ) by co-evaporation on silicon dioxide.

Individual evidence

  1. ^ A b William M. Haynes: CRC Handbook of Chemistry and Physics, 94th Edition . CRC Press, 2016, ISBN 978-1-4665-7115-0 , pp. 81 ( limited preview in Google Book search).
  2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
  3. ^ EG Rochow: The Chemistry of Silicon Pergamon International Library of Science, Technology, Engineering and Social Studies . Elsevier, 2013, ISBN 978-1-4831-8755-6 , pp. 1361 ( limited preview in Google Book search).
  4. ^ Karl A. Hofmann: Inorganic Chemistry . Springer-Verlag, 2013, ISBN 978-3-663-14240-9 , pp. 380 ( limited preview in Google Book search).
  5. ↑ Erich Pietsch, Emma Haller, Alfons Kotowski, Max Du Maire, Rudolf Sahmen, Friedrich Struwe: Platinum Part C · Delivery 1. Connections up to platinum and bismuth . Springer-Verlag, 2013, ISBN 978-3-662-13310-1 , pp. 131 ( limited preview in Google Book search).
  6. ^ CC Addison: Inorganic Chemistry of the Main-Group Elements . Royal Society of Chemistry, 1974, ISBN 978-0-85186-762-5 , pp. 425 ( limited preview in Google Book search).
  7. ↑ JE Klepeis, O. Beckstein, O. Pankratov, GLW Hart: Chemical bonding, elasticity, and valence force field models: A case study for and PtSi. In: Physical Review B. 64, 2001, doi : 10.1103 / PhysRevB.64.155110 .
  8. ↑ AA Naem: Platinum silicide formation using rapid thermal processing. In: Journal of Applied Physics. 64, 1988, p. 4161, doi : 10.1063 / 1.341329 .
  9. ↑ Arnulf Wallrabe: Night vision technology, infrared sensors: physical principles, structure, construction and use of thermal imaging devices . Springer-Verlag, 2013, ISBN 978-3-663-08100-5 , pp. 459 ( limited preview in Google Book search).
  10. ↑ Jurgen Beyerer, Fernando Puente León, Christian Frese: Automatic visual examination basics, methods and practice of image acquisition and image evaluation . Springer-Verlag, 2012, ISBN 978-3-642-23965-6 , p. 265 ( limited preview in Google Book search).
  11. ^ Hanno Schaumburg: Sensors . Springer-Verlag, 2013, ISBN 978-3-322-99927-6 , pp. 361 ( limited preview in Google Book search).
  12. ↑ A. Schlachetzki, Waldemar von Münch: Integrated circuits . Springer-Verlag, 2013, ISBN 978-3-322-94919-6 , pp. 38 ( limited preview in Google Book search).
  13. ↑ Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 978-0-412-30120-9 , pp. 3781 ( limited preview in Google Book search).
  14. ↑ Oliver Beckstein: Structural and electronic properties of platinum silicides from ab initio calculations , Friedrich-Alexander-Universität Erlangen-Nürnberg
  15. ↑ Norman G. Einspruch, Graydon B. Larrabee: Materials and Process Characterization . Academic Press, 2014, ISBN 978-1-4832-1773-4 , pp. 336 ( limited preview in Google Book search).
  16. ^ LE Tanner, H. Okamoto: The Pt-Si (Platinum-Silicon) system. In: Journal of Phase Equilibria. 12, 1991, p. 571, doi : 10.1007 / BF02645072 .