G. Jeffrey Snyder - Pasadena CA, US Heng Wang - Pasadena CA, US Yanzhong Pei - Arcadia CA, US
Assignee:
CALIFORNIA INSTITUTE OF TECHNOLOGY - Pasadena CA
International Classification:
H01B 1/02
US Classification:
25251914
Abstract:
The present invention discloses heavily doped PbSe with high thermoelectric performance. Thermoelectric property measurements disclosed herein indicated that PbSe is high zT material for mid-to-high temperature thermoelectric applications. At 850 K a peak zT>1.3 was observed when n1.0×10cm. The present invention also discloses that a number of strategies used to improve zT of PbTe, such as alloying with other elements, nanostructuring and band modification may also be used to further improve zT in PbSe.
N-Type Doped Pbte And Pbse Alloys For Thermoelectric Applications
G. Jeffrey Snyder - Pasadena CA, US Aaron LaLonde - Pasadena CA, US Yanzhong Pei - Pasadena CA, US Heng Wang - Pasadena CA, US
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
H01L 35/16
US Classification:
25251914, 264104
Abstract:
The present invention demonstrates that weak scattering of carriers leads to a high mobility and therefore helps achieve low electric resistivity with high Seebeck coefficient for a thermoelectric material. The inventors demonstrate this effect by obtaining a thermoelectric figure of merit, zT, higher than 1.3 at high temperatures in n-type PbSe, because of the weak scattering of carriers in the conduction band as compared with that in the valence band. The invention further demonstrates favorable thermoelectric transport properties of n-type PbTeIwith carrier concentrations ranging from 5.8×10-1.4×10cm.
Dr. Wang graduated from the Anhui Med Univ, Hefei City, Anhui, China in 1983. He works in Middlefield, OH and specializes in Pediatrics and Adolescent Medicine. Dr. Wang is affiliated with UH Geauga Medical Center and UH Rainbow Babies & Childrens Hospital.
collaborative studies they expect to launch soon with the Das Deutsch Clinic (DDC) for Special Needs Children in Middlefield, Ohio, just east of Cleveland. One will examine genetic diversity in general populations and the other will study cardiomyopathy, according to Heng Wang, medical director for the DDC.