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})

Journal Article · Sun Mar 01 04:00:00 EST 1998 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(97)00243-2· OSTI ID:616348

Eddike, D; Ramdani, A ^[1]; Brun, G; Tedenac, J C; Liautard, B ^[2]

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1. Faculte des Sciences, Oujda (Morocco). Lab. du Solide Mineral
2. 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, Journal Name: Materials Research Bulletin Journal Issue: 3 Vol. 33; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIMONY SELENIDES
CRYSTAL GROWTH
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
EQUILIBRIUM
INDIUM SELENIDES
PHASE DIAGRAMS
SEMICONDUCTOR MATERIALS
SOLID SOLUTIONS