News of the WeekMaterials Science

New Material Promises Chillier Currents

Science  11 Feb 2000:
Vol. 287, Issue 5455, pp. 945-946
DOI: 10.1126/science.287.5455.945a

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Good thermoelectric materials are few and far between; research labs haven't turned up a promising new one for decades. Now a research team reports on page 1024 that a concoction of bismuth, tellurium, and cesium cools nearly as efficiently as the best material currently available, and at lower temperatures, which promises to improve the performance of laser diodes, infrared detectors, and other electronic devices that run best cold.