Fig. 1: Fabrication of Te-free TE materials and modules.
From: Towards tellurium-free thermoelectric modules for power generation from low-grade heat

a Element weighing and mechanical alloying to prepare powder of the n- and p-type TE compounds. b One-step spark plasma sintering of materials and contact layers to prepare the TE legs. c Assembling of the Te-free TE module, including polishing, cutting, loading, positioning, and brazing the TE legs to the pre-circuited AlN ceramic plates.