Jump to main content
Jump to site search

Issue 47, 2015
Previous Article Next Article

Colloidal synthesis of Cu2−xAgxCdSnSe4 nanocrystals: microstructures facilitate high performance thermoelectricity

Author affiliations

Abstract

In this study, we report the colloidal synthesis (CS) of quaternary chalcogenide Cu2−xAgxCdSnSe4 nanocrystals (x = 0, 0.1, 0.2, 0.3, and 0.4) and their application in thermoelectrics. The as-prepared Cu2−xAgxCdSnSe4 nanocrystals present a narrow size distribution ranging from 30 to 50 nm and a precisely controlled composition. Additionally, it was observed that the disordered zinc blende phases were embedded in the normal zinc blende phases and amorphous nanoparticles were dispersed on grain surfaces and between grain boundaries of spark plasma sintered bulk Cu2−xAgxCdSnSe4. Moreover, a large enhancement in the Seebeck coefficient and a dramatically reduced lattice thermal conductivity was found in Cu2−xAgxCdSnSe4 solid solution, resulting in the dimensionless thermoelectric figure of merit reaching a peak value of 0.8 at 688 K when x = 0.3. This represents a 44% and 83% improvement in comparison to the undoped sample and the sample made via the solid state method (SS), respectively. The results demonstrate an exciting scientific opportunity to raise the figure-of-merit of quaternary chalcogenide Cu2CdSnSe4 prepared by colloidal synthesis via optimized solid solution.

Graphical abstract: Colloidal synthesis of Cu2−xAgxCdSnSe4 nanocrystals: microstructures facilitate high performance thermoelectricity

Back to tab navigation

Publication details

The article was received on 16 Sep 2015, accepted on 05 Nov 2015 and first published on 06 Nov 2015


Article type: Paper
DOI: 10.1039/C5TC02948A
Author version
available:
Download author version (PDF)
J. Mater. Chem. C, 2015,3, 12273-12280

  •   Request permissions

    Colloidal synthesis of Cu2−xAgxCdSnSe4 nanocrystals: microstructures facilitate high performance thermoelectricity

    Q. Chen, G. Wang, A. Zhang, D. Yang, W. Yao, K. Peng, Y. Yan, X. Sun, A. Liu, G. Wang and X. Zhou, J. Mater. Chem. C, 2015, 3, 12273
    DOI: 10.1039/C5TC02948A

Search articles by author

Spotlight

Advertisements