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Issue 23, 2015
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Co effect on zinc blende–rocksalt phase transition in CdS nanocrystals

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Abstract

The influence of Co doping on zinc blende-to-rocksalt (ZB–RS) phase transformation in CdS nanocrystals (NCs) has been investigated. Analysis is performed using in situ high pressure X-ray powder diffraction with synchrotron radiation. Pure cadmium sulphide (CdS) and cobalt-doped cadmium sulphide (CdS:Co) are prepared by gas–liquid phase chemical deposition. The experimental data indicates that doping with Co ions reduces the phase transition pressure (PT) (CdS = 4.89 GPa and CdS:Co = 4.06 GPa) and increases the bulk modulus (B0) of the initial and high-pressure phases. The phase transitions of all samples are reversible. Density functional theory calculations are also performed to study the phase transition. The enthalpy variation is in accord with the experimental data.

Graphical abstract: Co effect on zinc blende–rocksalt phase transition in CdS nanocrystals

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Article information


Submitted
18 Nov 2014
Accepted
04 Feb 2015
First published
09 Feb 2015

RSC Adv., 2015,5, 17582-17587
Article type
Paper

Co effect on zinc blende–rocksalt phase transition in CdS nanocrystals

R. Zhao, P. Wang, B. Yao, T. Hu, T. Yang, B. Xiao, S. Wang, C. Xiao and M. Zhang, RSC Adv., 2015, 5, 17582
DOI: 10.1039/C4RA14798G

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