About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XI
|
| Presentation Title |
C-3: Interfacial Reactions in Cu/Se, Cu2Se/Te and Cu2Te/Se Couples |
| Author(s) |
Yohanes Hutabalian, Sinn-wen Chen |
| On-Site Speaker (Planned) |
Yohanes Hutabalian |
| Abstract Scope |
Cu2Se-based and Cu2Te-based alloys are important thermoelectric materials. Interfacial reactions in the Cu/Se, Cu2Se/Te and Cu2Te/Se couples are determined in this study. Reaction products of CuSe2, Cu3Se2, CuSe and Cu2Se are observed in the Cu/Se reacted couple at 300oC. The Cu2Se/Te couple is prepared by heating Cu2Se substrate and Te shots together at 500oC for a very short time. Te melts and surrounds the Cu2Se substrate, and the Cu2Se/Te couple is quenched immediately. A very thick reaction zone is found in the as-quenched sample. A ternary compound, Cu3SeTe, is observed. The reaction path is Cu2Se/Cu3SeTe/CuTe/liquid at 500℃. A complicated reaction phases are observed found in the Cu2Te/Se couple reacted at 300oC. For only 10 min, a very thick layer of 147 mm thickness with various phases are found in the couple Cu2Te/Se. It is presumed that the Cu is the fastest diffusion species in both couples. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Phase Transformations, Joining |