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Highly enhanced thermoelectric properties of p-type CuInSe2 alloys by the Vacancy Doping

Highly enhanced thermoelectric properties of p-type CuInSe2 alloys by the Vacancy Doping

Authors :
Zhen-Hua Ge
Kang Wang
Peng Qin
Jing Feng
Source :
Scripta Materialia. 149:88-92
Publication Year :
2018
Publisher :
Elsevier BV, 2018.

Abstract

The electrical conductivity, Seebeck coefficient and thermal conductivity of the Cu1−xIn1−ySe2.05 alloys were investigated, which were synthesized by solid-state reaction method combined with spark plasma sintering (SPS) technique. With the increasing of vacancy contents, the electron and phonon scattering were enhanced. The electrical and thermal transport properties of the samples changed accordingly. The Cu0.99InSe2.05 bulk sample achieves the highest ZT value of 0.31 at 773 K due to optimized electrical and thermal transport properties, which is 3 times higher than that of pristine CuInSe2.05. Moreover, it is the highest ZT value in CuInSe2 system in all of previous literatures.

Details

ISSN :
13596462
Volume :
149
Database :
OpenAIRE
Journal :
Scripta Materialia
Accession number :
edsair.doi...........fc12878971c48dd3e286f9b989a3d4d1
Full Text :
https://doi.org/10.1016/j.scriptamat.2018.02.023