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Wavelength-Controlled Lasing in ZnxCd1–xS Single-Crystal Nanoribbons

Authors

  • Y. Liu,

    1. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
    2. On leave from Department of Physics, Yunnan Normal University, Kunming, P.R. China.
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  • J. A. Zapien,

    1. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
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  • Y. Y. Shan,

    1. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
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  • C.-Y. Geng,

    1. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
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  • C. S. Lee,

    1. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
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  • S.-T. Lee

    1. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P.R. China
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  • This work was supported by the Research Grants Council of Hong Kong SAR, China (Project No. CityU 1294/03E and CityU 101504) and the Chinese Academy of Sciences. We are grateful to Mr. Jeremy Yeung for assistance in the XRD measurements. Y. K. Liu and J. A. Zapien contributed equally to this work.

Abstract

original image

ZnxCd1xS single-crystal nanoribbons of controlled composition (where 0 ≤ x ≤ 1) can be synthesized by combining laser ablation with thermal evaporation. The nanoribbons (see Figure) exhibit lasing emission that can be continuously tuned within the ranges of 340–390 nm and 485–515 nm. These results suggest that ZnxCd1–xS nanoribbon lasers of pre-selected “tunable” wavelengths between 340 and 515 nm may be achievable by tailoring the value of x.

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