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Issue 9, 2014
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Facile synthesis, magnetic, electrical and photoelectric properties of layered quaternary chalcogenides K2FeCu3Q4 (Q = S and Se)

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Abstract

Layered chalcogenides have attracted much attentions due to their unique physical properties. Herein, two novel layered quaternary chalcogenides K2FeCu3Q4 (Q = S and Se) with the ThCr2Si2-type structure have been synthesized via a facile hydrothermal approach. Their structures were confirmed by XRD, XPS and TEM. The magnetic studies revealed that K2FeCu3S4 nanoparticles show a superparamagnetic behaviour at low temperature while K2FeCu3Se4 microcrystals exhibit a weak ferromagnetic behaviour with a high magnetic transition temperature. The temperature dependence, ρ(T) is semiconducting for all the compounds and explained well by the variable range hopping (VRH) rather than the adiabatic small polaron hopping (SPH). The band gaps of K2FeCu3Q4 are in the range of 0.99–1.28 eV. Their photoelectric responses were also characterized, which demonstrated their potential for application in photovoltaic devices.

Graphical abstract: Facile synthesis, magnetic, electrical and photoelectric properties of layered quaternary chalcogenides K2FeCu3Q4 (Q = S and Se)

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Supplementary files

Article information


Submitted
12 Oct 2013
Accepted
25 Nov 2013
First published
26 Nov 2013

CrystEngComm, 2014,16, 1810-1816
Article type
Paper

Facile synthesis, magnetic, electrical and photoelectric properties of layered quaternary chalcogenides K2FeCu3Q4 (Q = S and Se)

G. Zhang, H. Chen, Y. Xie and F. Huang, CrystEngComm, 2014, 16, 1810
DOI: 10.1039/C3CE42065E

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