Synthesis of the titanium phosphide telluride Ti{sub 2}PTe{sub 2}: A thermochemical approach
- Inorganic Chemistry, Dresden University of Technology, Helmholtzstrasse 10, 01069 Dresden (Germany)
- Institute for Inorganic Chemistry, Leibniz University Hannover, Callinstr. 9, 30167 Hannover (Germany)
- Max Planck Institute for Chemical Physics of Solids Dresden, Noethnitzer Str. 40, 01187 Dresden (Germany)
The phosphide telluride Ti{sub 2}PTe{sub 2} can be synthesised from the elements or from oxides in a thermite type reaction. Both ways have been optimised by consideration of the thermodynamic behaviour of the compound. Hence, the investigation of phase equilibria in the ternary system Ti/P/Te and of the thermal decomposition of Ti{sub 2}PTe{sub 2} was necessary. This investigation was performed by using different experimental approaches as total pressure measurements, thermal analysis and mass spectrometry. The results were supported and further analysed by thermodynamic modelling of the ternary system. It was shown that Ti{sub 2}PTe{sub 2(s)} decomposes to Ti{sub 2}P{sub (s)} and Te{sub 2(g)} in six consecutive steps. The growth of single crystals of Ti{sub 2}PTe{sub 2} is thermodynamically described as a chemical vapour transport with TiCl{sub 4(g)} acting as the transport agent. - Graphical abstract: Oxygen partial pressure and electrochemical potential above the oxides of titanium, tellurium and phosphorus calculated at 1000 K, marked: level of equalisation of oxygen partial pressure.
- OSTI ID:
- 21128244
- Journal Information:
- Journal of Solid State Chemistry, Vol. 181, Issue 4; Other Information: DOI: 10.1016/j.jssc.2008.01.003; PII: S0022-4596(08)00015-7; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thin-film cadmium telluride and zinc phosphide solar cells. Final report, March 1981-May 1981
THE TELLURIDES L$sub 3$Te$sub 4$ AND L$sub 2$Te$sub 3$ OF THE RARE EARTH ELEMENTS HAVING THE THORIUM PHOSPHIDE Th$sub 3$P$sub 4$ CRYSTALLINE TYPE