Published December 23, 2013
| Erratum + Published
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Temperature dependent band gap in PbX (X=S, Se, Te)
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Abstract
PbTe is an important thermoelectric material for power generation applications due its high conversion efficiency and reliability. Its extraordinary thermoelectric performance is attributed to band convergence of the light L and heavy Σ bands. However, the temperature at which these bands converge is disputed. In this letter, we provide direct experimental evidence combined with ab initio calculations that confirm an increasing optical gap up to 673 K and predict a band convergence temperature of 700 K, much higher than previous measurements showing saturation and band convergence at 450 K.
Additional Information
© 2013 American Institute of Physics. Received 9 October 2013; accepted 12 December 2013; published online 31 December 2013. The authors would like to acknowledge fruitful discussions with Professor Yanzhong Pei (Tongji University). Also, we would like to thank the Molecular Materials Research Center at the California Institute of Technology for allowing use of their equipment for the optical measurements performed in this work. ZMG, HW, FD, and GJS would like to thank our funding sources at NASA/Jet Propulsion Laboratory and AFOSR MURI FA9550-10-1-0533. The work by MK and HCK was supported as part of the Center for Solar and Thermal Energy Conversion at the University of Michigan, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Basic Energy Sciences under Award No. DE-SC-0000957.Errata
Erratum: "Temperature dependent band gap in PbX (X = S, Se, Te)" [Appl. Phys. Lett. 103, 262109 (2013)] Zachary M. Gibbs, Hyoungchul Kim, Heng Wang, Robert L. White, Fivos Drymiotis, Massoud Kaviany and G. Jeffrey Snyder Appl. Phys. Lett. 108, 179902 (2016); http://dx.doi.org/10.1063/1.4945986Attached Files
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Erratum - 1.4945986.pdf
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Additional details
- Eprint ID
- 43974
- Resolver ID
- CaltechAUTHORS:20140225-094203125
- NASA/JPL
- Air Force Office of Scientific Research (AFOSR)
- FA9550-10-1-0533
- Department of Energy (DOE)
- DE-SC-0000957
- Created
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2014-02-25Created from EPrint's datestamp field
- Updated
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2023-06-01Created from EPrint's last_modified field