Wang, J. L. and Wang, H. and Snyder, G. J. and Zhang, X. and Ni, Z. H. and Chen, Y. F. (2013) Characteristics of lattice thermal conductivity and carrier mobility of undoped PbSe-PbS solid solutions. Journal of Physics D: Applied Physics, 46 (40). Art. No. 405301. ISSN 0022-3727. doi:10.1088/0022-3727/46/40/405301. https://resolver.caltech.edu/CaltechAUTHORS:20131025-112136438
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Abstract
Solid solution has been considered as an effective approach to advanced thermoelectrics. However, the benefit from the decrease in lattice thermal conductivity induced by the impurity scattering will be compensated by the reduction in carrier mobility, therefore suppressing the maximum figure of merit (zT). We demonstrate the characteristics of the fundamental properties, including the lattice thermal conductivity and carrier mobility, of undoped PbSe_(1−x)S_x solid solutions (0 < x < 1) at room temperature, which provide an efficient way to evaluate the maximum zT of the materials with optimum doping. The lattice thermal conductivity is found to decrease significantly after adding a small amount of PbSe into PbS matrix up to the composition of PbSe_(0.7)S_(0.3) when the carrier mobility remains virtually unchanged, indicating the beneficial effect of impurity scattering to improve the thermoelectric performance.
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| Additional Information: | © 2013 Institute of Physics. Received 3 June 2013, in final form 16 August 2013. Published 17 September 2013. This work was supported by the National Basic Research Programme of China (Grant No. 2011CB707605), the National Natural Science Foundation of China (Grant No. 51106029), and the PhD Programs Foundation of Ministry of Education of China (Grant No. 20110092120006). | |||||||||
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| Issue or Number: | 40 | |||||||||
| Classification Code: | PACS: 72.20.Fr, 72.80.Jc, 72.10.Fk | |||||||||
| DOI: | 10.1088/0022-3727/46/40/405301 | |||||||||
| Record Number: | CaltechAUTHORS:20131025-112136438 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20131025-112136438 | |||||||||
| Official Citation: | Characteristics of lattice thermal conductivity and carrier mobility of undoped PbSe-PbS solid solutions J L Wang et al 2013 J. Phys. D: Appl. Phys. 46 405301 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 42072 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 25 Oct 2013 19:07 | |||||||||
| Last Modified: | 12 Jul 2022 19:53 |
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