Embedded in-situ nanodomains from chemical composition fluctuation in thermoelectric A2Cu3In3Te8 (A = Zn, Cd)

Pan，S.1; Liu，L.2; Li，Z.1; Yan，X.2; Wang，C.1; Guo，K.1; Yang，J.2; Jiang，Y.2; Luo，J.1,2; Zhang，W.3

2021-03-01

10.1016/j.mtphys.2020.100333

Materials Today Physics   影响因子和分区

2542-5293

2542-5293

Complex diamond-like chalcogenides, ACuInTe (A = Zn, Cd, Mn, Mg), were discovered and demonstrated to be promising thermoelectric materials in our prior work. Here we disclose that in-situ nanodomains coherently embedded in the ACuInTe (A = Zn, Cd) matrixes are generated by the chemical composition fluctuation. Cations enter into the interstitial lattice sites to form in-situ nanodomains, which slightly influence electron migration but effectively scatter phonons. The nanodomains can be successfully tailored by further composition fluctuation with the substitution of Cu for A, resulting in significantly improved electrical transport properties and reduced lattice thermal conductivity. The peak zT values of ∼1.0 and 1.2 at 873 K are achieved for ZnCuInTe and CdCuInTe, respectively, exceeding the hitherto reported zT values among quaternary diamond-like chalcogenides. Manipulating in-situ nanodomains in ACuInTe by introducing chemical composition fluctuation renders a promise in enhancing thermoelectric efficiency by nanostructure engineering within the complex thermoelectric materials.

A2Cu3In3Te8 Chalcogenide Diamond-like structure In-situ nanodomains Thermoelectric materials

SCI ; EI

英语

其他

National Key Research and Development Program of China[2018YFA0702100] ; National Natural Science Foundation of China[51632005,51772186,11704238] ; Guangdong Innovation Research Team Project[2017ZT07C062] ; Guangdong Provincial Key-Lab program[2019B030301001] ; Shenzhen Municipal KeyLab program[ZDSYS20190902092905285]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:000629739300006

ELSEVIER

20210809942616

Cadmium compounds ; Chalcogenides ; Indium compounds ; Tellurium compounds ; Thermal conductivity ; Thermoelectric equipment ; Thermoelectricity ; Zinc compounds

Thermoelectric Energy:615.4 ; Thermodynamics:641.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Inorganic Compounds:804.2

2-s2.0-85098095839

Scopus

1.School of Materials Science and Engineering,Shanghai University,Shanghai,200444,China
2.Materials Genome Institute,Shanghai University,Shanghai,200444,China
3.Department of Physics,Guangdong Provincial Key Lab for Computational Science and Materials Design,And Shenzhen Municipal Key-Lab for Advanced Quantum Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China

Pan，S.,Liu，L.,Li，Z.,et al. Embedded in-situ nanodomains from chemical composition fluctuation in thermoelectric A2Cu3In3Te8 (A = Zn, Cd)[J]. Materials Today Physics,2021,17.

Pan，S..,Liu，L..,Li，Z..,Yan，X..,Wang，C..,...&Zhang，W..(2021).Embedded in-situ nanodomains from chemical composition fluctuation in thermoelectric A2Cu3In3Te8 (A = Zn, Cd).Materials Today Physics,17.

Pan，S.,et al."Embedded in-situ nanodomains from chemical composition fluctuation in thermoelectric A2Cu3In3Te8 (A = Zn, Cd)".Materials Today Physics 17(2021).