Journal
CHEMISTRY OF MATERIALS
Volume 26, Issue 1, Pages 837-848Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm402150j
Keywords
heterostructures; thermoelectric materials; nanoinclusions; metal-semiconductor; interfacial barrier; hot carrier filtering
Funding
- Center for Energy Efficient Materials, an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001009]
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A key challenge for the materials chemist is the development of controllable and straightforward synthetic methodologies that will integrate multiple phases/compositions with scalar designed physical properties. The intent of this Perspective is to give a brief summary of some of the current bulk-scaled approaches that might help guide researchers in the design of optimal heterostructures in large quantity for the further improvement of thermoelectric conversion efficiency. Examples of two-phase combinations on different length scales will be discussed with a focus on the hot carrier filtering effect that results from the selective scattering of carriers with different energies. On the basis of this strategy,. heterostructures fabricated by both the bottom-up solution approaches at low temperature and top-down solid-state deposition routes that show promise in improving the thermoelectric figure of merit are highlighted.
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