1. Effects of composition and process parameters on the thermoelectric properties of n-type Bi2Te3-Bi2Se3 solid solutions
- Author
-
Jae Dong Shim, Dow Bin Hyun, Young Whan Cho, and Heon Phil Ha
- Subjects
Zone melting ,Thermal conductivity ,Materials science ,Electrical resistivity and conductivity ,Seebeck coefficient ,Thermoelectric effect ,Analytical chemistry ,Figure of merit ,Mineralogy ,Thermoelectric materials ,Solid solution - Abstract
The Bi2Te3‐Bi2Se3 solid solutions were grown by the zone melting method and material factor, μ0(m*/m0)3/2/kph, of these crystals were calculated from the measured values of the thermal conductivity, Seebeck coefficient, and electrical resistivity. It was found that Bi2Se3 content of this solid solution must be between 6 and 10 mol % to obtain high figure of merit near room temperature. To optimize carrier concentration Cdl2 or CdCl2 was doped to 90%Bi2Te3‐10%Bi2Se3 solid solution and their doping characteristics were compared. The effects of process parameters on the thermoelectric properties of these n‐type solid solutions were also reported. The figure of merit of 2.85×10−3 K−1 could be obtained by optimizing process condition.
- Published
- 1994
- Full Text
- View/download PDF