Researchers in Japan have micro-fabricated a thermoelectric generator for IoT devices from non-toxic materials. The proof-of-concept consists of 36 junctions, each made from p-type Mg2Sn0.8Ge0.2 working against n-type bismuth. “The output voltages of thermoelectric conversion modules and devices generally decrease as their sizes diminish,” according to the Japanese National Institute for Materials Science (NIMS). “An ...
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