Electrical resistivity and thermoelectric power of polycrystalline and amorphous Se-Te-Cu system |
| |
Authors: | K Balcerek R Wawryk Cz Marucha K Durczewski ZG Ivanova |
| |
Affiliation: | aInstitute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wroc?aw, Poland;bInstitute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko chaussee, BG-1756 Sofia, Bulgaria |
| |
Abstract: | The dark electrical resistivity and thermoelectric power have been measured for the bulk ternary alloy Se-Te-Cu. The samples were both polycrystalline and amorphous in structure. The measurements were carried out below room temperature. Depending on Cu addition, crystallographic structure, and amorphous or polycrystalline state, the samples manifested semiconducting or metallic behaviour. The maximum difference in electrical resistivity magnitude was of 14 orders. The activation energy ΔE of charge carriers determined for all semiconducting samples ranged from 0.07 to 0.25 eV. An increase in thermoelectric power resulting from the electron–phonon mass enhancement was estimated. |
| |
Keywords: | metals (A) semiconductors (A) transport properties (C) |
本文献已被 ScienceDirect 等数据库收录! |
|