alexa Quantum dot superlattice thermoelectric materials and devices.
Engineering

Engineering

International Journal of Advancements in Technology

Author(s): Harman TC, Taylor PJ, Walsh MP, LaForge BE

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Abstract PbSeTe-based quantum dot superlattice structures grown by molecular beam epitaxy have been investigated for applications in thermoelectrics. We demonstrate improved cooling values relative to the conventional bulk (Bi,Sb)2(Se,Te)3 thermoelectric materials using a n-type film in a one-leg thermoelectric device test setup, which cooled the cold junction 43.7 K below the room temperature hot junction temperature of 299.7 K. The typical device consists of a substrate-free, bulk-like (typically 0.1 millimeter in thickness, 10 millimeters in width, and 5 millimeters in length) slab of nanostructured PbSeTe/PbTe as the n-type leg and a metal wire as the p-type leg. This article was published in Science and referenced in International Journal of Advancements in Technology

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