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Thermoelectric performance of n-type (PbTe)0.75(PbS)0.15(PbSe)0.1 composites.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yamini, Sima Aminorroaya Wang, Heng Ginting, Dianta Mitchell, David Richard Graham Snyder, Gerald Jeffrey |
| Copyright Year | 2014 |
| Abstract | Lead chalcogenides (PbQ, Q = Te, Se, S) have proved to possess high thermoelectric efficiency for both n-type and p-type compounds. Recent success in tuning of electronic band structure, including manipulating the band gap, multiple bands, or introducing resonant states, has led to a significant improvement in the thermoelectric performance of p-type lead chalcogenides compared to the n-type ones. Here, the n-type quaternary composites of (PbTe)0.75(PbS)0.15(PbSe)0.1 are studied to evaluate the effects of nanostructuring on lattice thermal conductivity, carrier mobility, and effective mass variation. The results are compared with the similar ternary systems of (PbTe)(1-x)(PbSe)x, (PbSe)(1-x)(PbS)x, and (PbS)(1-x)(PbTe)x. The reduction in the lattice thermal conductivity owing to phonon scattering at the defects and interfaces was found to be compensated by reduced carrier mobility. This results in a maximum figure of merit, zT, of ∼1.1 at 800 K similar to the performance of the single phase alloys of PbTe, PbSe, and (PbTe)(1-x)(PbSe)x. |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/am502140h |
| PubMed reference number | 24960418 |
| Journal | Medline |
| Volume Number | 6 |
| Issue Number | 14 |
| Alternate Webpage(s) | http://ro.uow.edu.au/cgi/viewcontent.cgi?amp%3Bcontext=aiimpapers&article=2173 |
| Alternate Webpage(s) | http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2173&context=aiimpapers |
| Alternate Webpage(s) | https://doi.org/10.1021/am502140h |
| Journal | ACS applied materials & interfaces |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
