Phase diagram equilibria in In{sub 2}Se{sub 3}-Sb{sub 2}Se{sub 3} crystal growth of the {beta}-In{sub 2}Se{sub 3} phase (In{sub 1.94}Sb{sub 0.06}Se{sub 3})
- Faculte des Sciences, Oujda (Morocco). Lab. du Solide Mineral
- Univ. Montpellier 2 (France)
The phase diagram In{sub 2}Se{sub 3}-Sb{sub 2}Se{sub 3} was constructed from DTA and X-ray diffraction analysis data. No compound was observed in it, but two finite regions of In{sub 2}Se{sub 3}-based solid solutions were found: the first one, called {beta}{prime} (from 10 to 3.5 mol% Sb{sub 2}Se{sub 3}), of the tetradymite structure, and the second (from 3.5 to 0 mol% Sb{sub 2}Se{sub 3}) being the {beta}-In{sub 2}Se{sub 3} stabilized form. Crystals of the antimony-doped {beta}-In{sub 2}Se{sub 3} form were grown by the Bridgman method. This compound, the composition of which is In{sub 1.94}Sb{sub 0.06}Se{sub 3}, appears to be closely connected with the tetradymite structure. The refined unit-cell parameters of the hexagonal cell are a = 397(2) pm and c = 2827(2) pm. Its room temperature dc conductivity is 2 {times} 10{sup {minus}2} {Omega}/cm, and it is an n-type semiconductor with a band gap of 1.34 eV.
- OSTI ID:
- 616348
- Journal Information:
- Materials Research Bulletin, Vol. 33, Issue 3; Other Information: PBD: Mar 1998
- Country of Publication:
- United States
- Language:
- English
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