|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications X
||Interfacial Reactions in Ni/PbSe and Ni/SnSe2 and Couples
||Sinn-wen Chen, Zhi-Kai Hu, Hsu-Hui Chen, Yohanes Hutabalian
|On-Site Speaker (Planned)
PbSe and SnSe2 are important thermoelectric materials. Ni is commonly used as barrier layer material. The interfacial reactions in the Ni/PbTe and Ni/SnSe2 couples are examined. PbSe and SnSe2 substrates are prepared with pure constituent elements and electroplated with Ni layer. The Ni/PbSe couples were reacted at 300, 350 and 400℃, and Ni/SnSe2 couples at 200, 300 and 500℃. For better understanding of the reaction paths, phase equilibria isothermal sections of Ni-Pb-Se and Ni-Se-Sn systems at respective temperatures are determined. A ternary phase, Ni3Pb2Se2, is formed in the Ni/PbSe couples reacted at all these three temperatures. The reaction layer grows thicker with higher reaction temperature and linearly with square root of reaction time. Much more complicated interfacial reaction results were observed in the Ni/SnSe2 couples. Three different reaction phase layers are observed in the couples reacted at 500℃. Four layers are observed for those reacted at 300 and 200 ℃.
||Joining, Electronic Materials, Energy Conversion and Storage