| 摘要 |
A thermoelectric composition comprises a material represented by the general formula (AgaX1-a)1±x(SnbPb1-b)mM'1-yQ2+m wherein X is Na, K, or a combination of Na and K in any proportion; M' is a trivalent element selected from the group consisting of Sb, Bi, lanthanide elements, and combinations thereof; Q is a chalcogenide element selected from the group consisting of S, Te, Se, and combinations thereof; a and b are independently >0 and <=1; x and y are independently >0 and <1; and 2<=m<=30. The compositions exhibit a figure of merit ZT of up to about 1.4 or higher, and are useful as p-type semiconductors in thermoelectric devices.
|
