Investigation of the Microstructural and Thermoelectric Properties of the (GeTe)0.95(Bi2Te3)0.05 Composition for Thermoelectric Power Generation Applications

View/Open
Identifiers
URI: http://hdl.handle.net/11556/10
ISSN: 1687-4129
Bibliography Export
RefworksRisMendeleyEndNote
Statistics
View Usage Statistics
Full record
Show full item record
Author/s
Weintraub, Lior; Davidow, Joseph; Tunbridge, Jonathan; Dixon, Richard; Reece, Michael John; [et al.]
Date
2014
Keywords
(PB,SN,GE)TE-BASED ALLOYS
SPINODAL DECOMPOSITION
PERFORMANCE
Abstract
In the frame of the current research, the p-type Bi2Te3 doped (GeTe)(0.95)(Bi2Te3)(0.05) alloy composed of hot pressed consolidated submicron structured powder was investigated. The influence of the process parameters (i.e., powder particles size and hot pressing conditions) on both reduction of the lattice thermal conductivity and electronic optimization is described in detail. Very high maximal ZT values of up to similar to 1.6 were obtained and correlated to the microstructural characteristics. Based on the various involved mechanisms, a potential route for further enhancement of the ZT values of the investigated composition is proposed.
Type
article