High-performance Ag{sub 0.8}Pb{sub 18+x}SbTe{sub 20} thermoelectric bulk materials fabricated by mechanical alloying and spark plasma sintering

Journal Article · Mon Feb 27 00:00:00 EST 2006 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2181197· OSTI ID:20778755

Heng, Wang; Jingfeng, Li; Cewen, Nan; Min, Zhou; Weishu, Liu; Boping, Zhang; Kita, Takuji ^[1]

---

1. State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084 (China)

Polycrystalline Ag{sub n}Pb{sub m}SbTe{sub m+2n} thermoelectric materials, whose compositions can be described as Ag{sub 0.8}Pb{sub 18+x}SbTe{sub 20} were prepared using a combined process of mechanical alloying and spark plasma sintering. Electric properties of the sintered samples with different Pb contents were measured from room temperature to 700 K. The maximum power factor of 1.766 mW/mK{sup 2} was obtained at 673 K for the Ag{sub 0.8}Pb{sub 22}SbTe{sub 20} sample, which corresponds to a high dimensionless figure of merit, ZT=1.37. This best composition is different from that reported before.

• OSTI ID: 20778755
• Journal Information: Applied Physics Letters, Vol. 88, Issue 9; Other Information: DOI: 10.1063/1.2181197; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIMONY COMPOUNDS
ELECTRICAL PROPERTIES
LEAD COMPOUNDS
PERFORMANCE
PLASMA
POLYCRYSTALS
POWER FACTOR
SILVER COMPOUNDS
SINTERING
TELLURIUM COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
THERMOELECTRIC MATERIALS
THERMOELECTRICITY