Analysis of electrical conduction mechanism in the high temperature range of the nanostructured photoabsorber Cu2SnS3

作者：Lahlali S; Essaleh L; Belaqziz M; Chehouani H; Djessas K; Viallet B

来源：Physica B: Condensed Matter , 2016, 500: 161-164.

DOI：10.1016/j.physb.2016.08.004

• Electrical conductivity
• Impedance spectroscopy
• Copper ternary compounds

The dynamic electrical conduction in the bulk ternary semiconductor compound Cu2SnS3 is studied for the first time in the high temperature range from 300 degrees C to 440 degrees C in the frequency range 1 kHz-1 MHz. New activation energy for conduction mechanism is obtained and its frequency dependence is analyzed. The Cole Cole representation is almost half circular indicating a single contribution to total electrical conduction through the material. The activation energy for the mean relaxation process, obtained separately from the analysis of imaginary part Z" of complex impedance Z '' and from the equivalent electric circuit, is estimated to be (942 +/- 74)meV. The correlated barrier hopping model is considered to analyze the experimental data. The results are compared with those obtained previously in low temperature range.

• 出版日期2016-11