Thermoelectric Module of SiGe Bulk Alloys Forming p?n Junction at the Hot Side

Thermoelectric power generation is a potential technology for providing green energy. It expected to be able convert enormous amounts of waste heat electrical To realize this technology, further increases in conversion efficiency and durability are essential. In particular, critical issue, especially harnessing high-temperature sources. Thus, thermoelectric module SiGe fabricated without electrodes at the hot side, which main cause aging. Electronic conduction between p- n-type elements alternatively introduced using direct connection, forming p-n junction. Sufficiently low contact resistances achieved junction above 300 °C due dissipation depletion layer. The 2.0% with hot-side temperature 700 °C. power-generation performance constant during heat-run tests conducted 500 under vacuum air, respectively, more than 450 h. results demonstrate that stable high temperatures established successfully.