Table 1.
Carrier concentration, mobility and TE properties of the annealed films at 303 K
| Types of films | Sb2Te3 | Bi2Te3 | Bi2Te3/Au multilayer | Bi2Te3/Pt multilayer |
|---|---|---|---|---|
| Type of carrier | Holes | Electrons | Electrons | Electrons |
|
Carrier concentration [cm−3] |
(2.9 ± 0.3) × 1020 | (1.8 ± 0.2) × 1021 | (6.8 ± 0.1) × 1021 | (2.0 ± 0.2) × 1021 |
|
Carrier mobility [cm2 V−1 s−1] |
5.7 ± 0.2 | 8.77 ± 0.4 | 1.5 ± 0.1 | 13.2 ± 0.2 |
|
Seebeck coefficient [μV K−1] |
148.4 ± 1.0 | 62.0 ± 0.3 | 55.0 ± 1.1 | 107.05 ± 1.1 |
|
Electrical conductivity [S cm−1] |
252 ± 6 | 2638 ± 58 | 1525 ± 81 | 4054 ± 11 |
|
Power factor [μW cm−1 K−2] |
5.5 ± 0.6 | 10.1 ± 0.4 | 4.61 ± 0.7 | 46.5 ± 0.5 |