Refractory materials for high-temperature thermoelectric energy conversion

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Theoretical work of two decades ago adequately explained the transport behavior and effectively guided the development of thermoelectric materials of high conversion efficiencies of conventional semiconductors (e.g., SiGe alloys). The more significant contributions involved the estimation of optimum doping concentrations, the reduction of thermal conductivity by solid solution doping and the development of a variety of materials with ZT approx. 1 in the temperature range 300 K to 1200 K. It was also shown that ZT approx. 1 is not a theoretical limitation although, experimentally, values in excess of one were not achieved. Work has continued with emphasis on higher … continued below

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8 pages

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Wood, C. & Emin, D. January 1, 1983.

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Theoretical work of two decades ago adequately explained the transport behavior and effectively guided the development of thermoelectric materials of high conversion efficiencies of conventional semiconductors (e.g., SiGe alloys). The more significant contributions involved the estimation of optimum doping concentrations, the reduction of thermal conductivity by solid solution doping and the development of a variety of materials with ZT approx. 1 in the temperature range 300 K to 1200 K. It was also shown that ZT approx. 1 is not a theoretical limitation although, experimentally, values in excess of one were not achieved. Work has continued with emphasis on higher temperature energy conversion. A number of promising materials have been discovered in which it appears that ZT > 1 is realizable. These materials can be divided into two classes: (i) the rare-earth chalcogenides, which behave as itinerant highly-degenerate n-type semiconductors at room-temperature, and (ii) the boron-rich borides, which exhibit p-type small-polaronic hopping conductivity.

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8 pages

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NTIS, PC A02/MF A01.

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  • Materials Research Society annual meeting, Boston, MA, USA, 14 Nov 1983

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  • Other: DE84004994
  • Report No.: SAND-83-1647C
  • Report No.: CONF-831174-46
  • Grant Number: AC04-76DP00789
  • Office of Scientific & Technical Information Report Number: 5597865
  • Archival Resource Key: ark:/67531/metadc1091029

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  • January 1, 1983

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  • Feb. 10, 2018, 10:06 p.m.

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  • Feb. 25, 2021, 8:55 p.m.

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Wood, C. & Emin, D. Refractory materials for high-temperature thermoelectric energy conversion, article, January 1, 1983; Pasadena, California. (https://digital.library.unt.edu/ark:/67531/metadc1091029/: accessed June 8, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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