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

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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.

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Acknowledgment

This work is supported by Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0094064), and supported by Mid-career Researcher Program through NRF grant funded by the MEST (No. R01-2008-000-21056-0).

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Authors and Affiliations

  1. Department of Physics, Pukyong National University, Busan, 608-737, Korea

    S. Sambasivam, Jung Hyun Jeong & Byung Chun Choi

  2. Department of Image System Science & Engineering, Pukyong National University, Busan, 608-737, Korea

    Kwon Taek Lim

  3. Department of Physics, Changwon National University, Changwon, 641-773, Korea

    Sang Su Kim

  4. Department of Ceramic Science & Engineering, Changwon National University, Changwon, 641-773, Korea

    Tae Kwon Song

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  1. S. Sambasivam
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  2. Jung Hyun Jeong
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Correspondence to Byung Chun Choi.

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Sambasivam, S., Jeong, J.H., Choi, B.C. et al. Optical and electron spin resonance studies of coprecipitated Cd1–xCuxS (x = 0–0.15) semiconductor nanoparticles capped with thiophenol. Journal of Materials Research 26, 706–709 (2011). https://doi.org/10.1557/jmr.2011.1

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