Nanostructured AgPbmSbTem+2System Bulk Materials with Enhanced Thermoelectric Performance
- 8 March 2008
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 130 (13), 4527-4532
- https://doi.org/10.1021/ja7110652
Abstract
Nanostructured Ag0.8Pbm+xSbTem+2 (m = 18, x = 4.5) system thermoelectric materials have been fabricated by combining mechanical alloying (MA) and spark plasma sintering (SPS) methods followed by annealing for several days to investigate the effect on microstructure and thermoelectric performance. It was found that appropriate annealing treatment could reduce both the electrical resistivity and the thermal conductivity at the same time, consequently greatly enhancing the thermoelectric performance. A low electrical resistivity of 2 × 10-3 Ohm-cm and low thermal conductivity of 0.89 W m-1 K-1 were obtained for the sample annealed for 30 days at 700 K. The very low thermal conductivity is supposed to be due to the nanoscopic Ag/Sb-rich regions embedded in the matrix. A high ZT value of 1.5 at 700 K has been achieved for the sample annealed for 30 days.This publication has 14 references indexed in Scilit:
- New Directions for Low‐Dimensional Thermoelectric MaterialsAdvanced Materials, 2007
- Nanostructuring and High Thermoelectric Efficiency in p‐Type Ag(Pb1 – ySny)mSbTe2 + mAdvanced Materials, 2006
- Nanostructuring, Compositional Fluctuations, and Atomic Ordering in the Thermoelectric Materials AgPbmSbTe2+m. The Myth of Solid SolutionsJournal of the American Chemical Society, 2005
- Thermal Transport in Nanostructured Solid-State Cooling DevicesJournal of Heat Transfer, 2005
- Cubic AgPb
m
SbTe 2+
m
: Bulk Thermoelectric Materials with High Figure of MeritScience, 2004
- Quantum Dot Superlattice Thermoelectric Materials and DevicesScience, 2002
- Chapter 6 Semiconductor clathrates: A phonon glass electron crystal material with potential for thermoelectric applicationsPublished by Elsevier BV ,2001
- High thermoelectric figures of merit in PbTe quantum wellsJournal of Electronic Materials, 1996
- Filled Skutterudite Antimonides: A New Class of Thermoelectric MaterialsScience, 1996
- Experimental study of the effect of quantum-well structures on the thermoelectric figure of meritPhysical Review B, 1996