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Title: Electronic and thermoelectric analysis of phases in the In2O3(ZnO)k system

The high-temperature electrical conductivity and thermopower of several compounds in the In2O3(ZnO)k system (k = 3, 5, 7, and 9) were measured, and the band structures of the k = 1, 2, and 3 structures were predicted based on first-principles calculations. These phases exhibit highly dispersed conduction bands consistent with transparent conducting oxide behavior. Jonker plots (Seebeck coefficient vs. natural logarithm of conductivity) were used to obtain the product of the density of states and mobility for these phases, which were related to the maximum achievable power factor (thermopower squared times conductivity) for each phase by Ioffe analysis (maximum power factor vs. Jonker plot intercept). With the exception of the k = 9 phase, all other phases were found to have maximum predicted power factors comparable to other thermoelectric oxides if suitably doped.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [1]
  1. Northwestern Univ., Evanston, IL (United States) Dept. of Materials Science and Engineering
  2. Northwestern Univ., Evanston, IL (United States) Dept.of Physics and Astronomy
Publication Date:
OSTI Identifier:
1076482
Grant/Contract Number:
FG02-08ER46536; SC0001050; DMR-0520513
Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 109; Journal Issue: 1; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Research Org:
Northwestern Univ., Evanston, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY