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      Quantum dot superlattice thermoelectric materials and devices.

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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.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          1095-9203
          0036-8075
          Sep 27 2002
          : 297
          : 5590
          Affiliations
          [1 ] Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA 02420, USA.
          Article
          297/5590/2229
          10.1126/science.1072886
          12351781
          47cab04d-7940-4d5b-a20c-51637e8a4098
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