High thermoelectric performance of n-type PbTe 1-y S y due to deep lying states induced by indium doping and spinodal decomposition
Good thermoelectric materials should have high engineering figure-of-merit (ZT)eng, not peak ZT, to achieve high conversion efficiency. In this work, we achieved a good (ZT)eng by optimizing the carrier concentration to improve the room temperature ZT using deep lying dopant, indium, in PbTe 1-y S y. It was found that a room temperature ZT as high as ~0.5 and a peak ZT ~1.1 at about 673 K were obtained in Pb0.98In0.02Te0.8S0.2 due to a lower thermal conductivity by alloy scattering and Spinodal decomposition. The calculated efficiency could be as high as ~12% at cold side 323 K and hot side 773 K. The approach is expected to work in other materials systems too.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
- Sponsoring Organization:
- USDOE SC Office of Basic Energy Sciences (SC-22)
- DOE Contract Number:
- SC0001299; SC0001299
- OSTI ID:
- 1371436
- Journal Information:
- Nano Energy, Journal Name: Nano Energy Journal Issue: C Vol. 22; ISSN 2211-2855
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
Similar Records
Heavy Doping and Band Engineering by Potassium to Improve the Thermoelectric Figure of Merit in p-Type PbTe, PbSe, and PbTe1–ySey
Enhancement of thermoelectric performance in n-type PbTe1-ySey by doping Cr and tuning Te:Se ratio
High Figure of Merit in Gallium-Doped Nanostructured n-Type PbTe-xGeTe with Midgap States
Journal Article
·
Wed May 23 20:00:00 EDT 2012
· Journal of the American Chemical Society
·
OSTI ID:1386807
Enhancement of thermoelectric performance in n-type PbTe1-ySey by doping Cr and tuning Te:Se ratio
Journal Article
·
Wed Feb 25 19:00:00 EST 2015
· Nano Energy
·
OSTI ID:1385306
High Figure of Merit in Gallium-Doped Nanostructured n-Type PbTe-xGeTe with Midgap States
Journal Article
·
Tue Sep 10 20:00:00 EDT 2019
· Journal of the American Chemical Society
·
OSTI ID:1776870
Related Subjects
77 NANOSCIENCE AND NANOTECHNOLOGY
charge transport
defects
materials and chemistry by design
mechanical behavior
optics
phonons
solar (photovoltaic)
solar (thermal)
solid state lighting
spin dynamics
synthesis (novel materials)
synthesis (scalable processing)
synthesis (self-assembly)
thermal conductivity
thermoelectric
charge transport
defects
materials and chemistry by design
mechanical behavior
optics
phonons
solar (photovoltaic)
solar (thermal)
solid state lighting
spin dynamics
synthesis (novel materials)
synthesis (scalable processing)
synthesis (self-assembly)
thermal conductivity
thermoelectric