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Preparation and thermoelectric properties of AgPbmSbSem+2 materials |
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| Authors: | KF Cai XR He DH Yu H Li |
| Institution: | a Functional Materials Research Laboratory, Tongji University, 1239 Siping Road, Shanghai 200092, China b Bragg Institute, Australian Nuclear Science and Technology Organization, PMB 1, Menai, NSW 2234, Australia c School of Mechanical Engineering, Ningbo University of Technology, Ningbo 315016, China |
| Abstract: | Hydrothermally synthesized AgPbmSbSem+2 (m=10, 12, 16, 18) nanoparticles with diameters of 20-50 nm were compacted by pressureless sintering. The Seebeck coefficient and electrical conductivity of the samples were measured from room temperature up to ∼750 K. The samples show large and positive values of the Seebeck coefficient and moderate electrical conductivity. The thermoelectric properties of AgxPb18SbSe20 (x=0.8, 0.85) and AgPb18SbSe20−yTey (y=1, 3) samples have also been studied. It has been found that Ag0.85Pb18SbSe20 sample has a higher thermoelectric power factor. A significant difference in thermoelectric properties has also been observed for the AgPb18SbSe20 samples prepared with pressureless sintering and spark plasma sintering. |
| Keywords: | Chalcogenides Semiconductors Sintering Microstructure Thermoelectric properties |
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