Table 1 Growth conditions and electrical properties of representative samples. The concentration of dopants (C p ) and excess Cd in the melt are the intended concentrations used in the charge for growth. The uncertainty in the excess Cd is ± 2 × 1018 cm−3. Samples A1, A2, and B2 are p-type.
Sample | Dopant | Growth | Excess Cd (cm−3) | C P (in melt) (cm−3) | C P (after growth) (cm−3) | N A (cm−3) | ρ (Ω.cm) | Activation (%) | Lifetime (ns) |
|---|---|---|---|---|---|---|---|---|---|
A1 | As | Cd-rich As-doped | 6 × 1018 | 5.5 × 1017 | 1.2 × 1017 | (3–5) × 1013 | ~800 | 0.02–0.04 | 6.5 |
A2 | As | Cd-rich As-doped | 6 × 1018 | 1.1 × 1017 | (5–10) × 1016 | (1–2) × 1015 | ~20 | 1–3 | ~1.4 |
B1 | None | Cd-rich Undoped | 5 × 1018 | None | None | N/A | N/A | N/A | 245–300 |
B2 | None | Te-rich Undoped | N/A | None | None | ~1 × 1015 | 100–500 | N/A | 31–236 |
