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Title: Synthesis, transport properties and electronic structure of p-type Cu1+xMn2–xInTe4(x = 0, 0.2, 0.3)

Journal Article · · Dalton Transactions
DOI:https://doi.org/10.1039/C9DT04069B· OSTI ID:1615196
 [1];  [1];  [1];  [2];  [3];  [4]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Florida, Tampa, FL (United States)
  2. Univ. of Florida, Tampa, FL (United States); Florida State Univ., Tallahassee, FL (United States)
  3. Florida State Univ., Tallahassee, FL (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The synthesis, electronic structure and temperature dependent transport properties of polycrystalline Cu1+xMn2–xInTe4 (x = 0, 0.2, 0.3) are reported for the first time. These quaternary chalcogenides were synthesized by direct reaction of the elements, followed by solid state annealing and hot press densification. The thermal conductivity is low for all specimens and intrinsic to the material system. Furthermore, the off-stoichiometry specimens illustrate the sensitivity of the transport properties to stoichiometry, with a greater than two-orders-of magnitude increase in carrier concentration with increased Cu content. First principles calculations of the electronic structure are also reported, and are in agreement with the experimental data. Here, this fundamental investigation shows the potential towards further optimization of the electrical properties that, in addition to the intrinsically low thermal conductivity, provides a basis for further research into the viability of this material system for potential energy-related applications.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; DMR-1644779; DMR-1748188
OSTI ID:
1615196
Journal Information:
Dalton Transactions, Vol. 49, Issue 7; ISSN 1477-9226
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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