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Optical and electron spin resonance studies of coprecipitated Cd1–xCuxS (x = 0–0.15) semiconductor nanoparticles capped with thiophenol

Published online by Cambridge University Press:  14 February 2011

S. Sambasivam ,
Jung Hyun Jeong ,
Byung Chun Choi ,
Kwon Taek Lim ,
Sang Su Kim  and
Tae Kwon Song
S. Sambasivam
Affiliation:
Department of Physics, Pukyong National University, Busan 608-737, Korea
Jung Hyun Jeong
Affiliation:
Department of Physics, Pukyong National University, Busan 608-737, Korea
Byung Chun Choi*
Affiliation:
Department of Physics, Pukyong National University, Busan 608-737, Korea
Kwon Taek Lim
Affiliation:
Department of Image System Science & Engineering, Pukyong National University, Busan 608-737, Korea
Sang Su Kim
Affiliation:
Department of Physics, Changwon National University, Changwon 641-773, Korea
Tae Kwon Song
Affiliation:
Department of Ceramic Science & Engineering, Changwon National University, Changwon 641-773, Korea
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Nanoparticles of Cd1–xCuxS (x = 0–0.15) were synthesized by chemical coprecipitation using thiophenol as a capping agent. The x-ray diffraction patterns reveal that the pure and doped CdS nanoparticles are single phase with cubic zinc blende structure. The transmission electron microscopy shows the average size of the nanoparticles is about 8.5 nm. Optical absorption spectra indicate the energy gap decreases with increasing Cu2+ concentration. The broad emission peak around 520 nm is completely quenched with increasing Cu2+ content. The electron spin resonance analysis also confirms the Cu (II) ion to be doped substitutionally in CdS nanoparticles and the Lande factor of all the samples with sharp resonance is g = 2.0.

Keywords

CdSSemiconductorThiophenolPhotoluminescenceESR
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 5 , 14 March 2011 , pp. 706 - 709
Copyright
Copyright © Materials Research Society 2011

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