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  1. No Access

    Article

    Insights into recombination channels in a CVT grown ZnSe single crystal

    Native defects and unintentional contaminations during growth can strongly influence the optical properties of semiconductors and their applications. The tailoring of these optical properties requires a deep u...

    P. Kannappan, B. P. Falcão, K. Asokan, J. P. Leitão, R. Dhanasekaran in Applied Physics A (2022)

  2. No Access

    Article

    Ag and Sn Nanoparticles to Enhance the Near-Infrared Absorbance of a-Si:H Thin Films

    Silver (Ag) and tin (Sn) nanoparticles (NPs) were deposited by thermal evaporation onto heated glass substrates with a good control of size, shape and surface coverage. This process has the advantage of allowi...

    D. Gaspar, A. C Pimentel, M. J. Mendes, T. Mateus, B. P. Falcão, J. P. Leitão… in Plasmonics (2014)

  3. Article

    Open Access

    Influence of the layer thickness in plasmonic gold nanoparticles produced by thermal evaporation

    Metallic nanoparticles (NPs) have received recently considerable interest of photonic and photovoltaic communities. In this work, we report the optoelectronic properties of gold NPs (Au-NPs) obtained by deposi...

    D. Gaspar, A. C. Pimentel, T. Mateus, J. P. Leitão, J. Soares… in Scientific Reports (2013)

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  4. No Access

    Article

    Photoluminescence study of GaAs thin films and nanowires grown on Si(111)

    Mg-doped GaAs nanowires have been grown by molecular beam epitaxy on a partially Au-coated Si(111) substrate by the vapor–liquid–solid mechanism. Outside the coated areas, a thin film of GaAs was grown epitaxi...

    B. P. Falcão, J. P. Leitão, J. C. González, M. R. Correia… in Journal of Materials Science (2013)