About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
External Field-Intensified Materials Processing
|
| Presentation Title |
Synthesis of High-Purity Cadmium Telluride by Pressurized Smelting - Vacuum Purification |
| Author(s) |
Jiarong Li, Guozheng Zha, Wenlong Jiang |
| On-Site Speaker (Planned) |
Wenlong Jiang |
| Abstract Scope |
This work presents an energy-efficient method for synthesizing 5N-purity (≥99.999%) cadmium telluride (CdTe) at significantly reduced temperatures. Tellurium and cadmium (both ≥99.999% purity) are mixed in a molar ratio of 1:1.1 and subjected to pressurized smelting under 0.4–0.6 MPa in an inert atmosphere (N₂/Ar) at 450–500°C for 60–150 min. The elevated pressure enables a >300°C reduction in synthesis temperature compared to conventional methods (≥800°C). The resulting CdTe crude product is then purified under vacuum (1–20 Pa) at 450–500°C for 30–90 min. Crucially, the process achieves a yield exceeding 98.5% post-purification (validated at 500°C/0.5 MPa) while maintaining 99.999% purity. This represents a paradigm shift in CdTe manufacturing, dramatically lowering energy consumption without compromising yield or purity for semiconductor applications (e.g., solar cells, radiation detectors). |
| Proceedings Inclusion? |
Planned: |