Article ID Journal Published Year Pages File Type
1676538 Thin Solid Films 2006 4 Pages PDF
Abstract

Seebeck coefficient of the structurally one-dimensional material, TlInSe2, known as a p-type conductor, has been measured in the temperature range 70 °C to 500 °C in vacuum by using four probe techniques. At temperatures above 200 °C this coefficient is found to be negative. With temperature down to below 200 °C, the coefficient is becoming positive and huge to a cutting-edge value of 107 μV/°C. The obtained results are discussed in terms of an incommensurate superlattice phase, which might have taken place in TlInSe2 at temperatures below 200 °C, and led to the above unique thermoelectric properties of this material. It is expected that thermoelectric devices based on TlInSe2 will have superior parameters.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
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