Contact
    Start Publications Anisotropic Emission from Multilayered Plasmon Resonator ...
    ←  Publication Finder
    KSV NIMA

    Anisotropic Emission from Multilayered Plasmon Resonator Nanocomposites of Isotropic Semiconductor Quantum Dots

    Year: 2011

    Journal: ACS Nano, 2011, 5 (2), 1328–1334, 20131009

    Authors: Tuncay Ozel, Sedat Nizamoglu, Mustafa A. Sefunc, Olga Samarskaya, Ilkem O. Ozel, Evren Mutlugun, Vladimir Lesnyak, Nikolai Gaponik, Alexander Eychmuller, Sergey V. Gaponenko, Hilmi Volkan Demir

    Organizations: Department of Physics, Department of Electrical and Electronics Engineering, and UNAM−Institute of Materials Science and Nanotechnology, Bilkent University, TR-06800, Ankara, Turkey; Physical Chemistry, TU Dresden, Bergstrasse 66b, 01062 Dresden, Germany; Stepanov Institute of Physics, National Academy of Sciences of Belarus , Minsk, 220072, Belarus; School of Electrical and Electronic Engineering, Division of Microelectronics, School of Mathematical and Physical Sciences, Luminous Semiconductor Lighting and Display Center of Excellence, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore

    We propose and demonstrate a nanocomposite localized surface plasmon resonator embedded into an artificial three-dimensional construction. Colloidal semiconductor quantum dots are assembled between layers of metal nanoparticles to create a highly strong plasmon−exciton interaction in the plasmonic cavity. In such a multilayered plasmonic resonator architecture of isotropic CdTe quantum dots, we observed polarized light emission of 80% in the vertical polarization with an enhancement factor of 4.4, resulting in a steady-state anisotropy value of 0.26 and reaching the highest quantum efficiency level of 30% ever reported for such CdTe quantum dot solids. Our electromagnetic simulation results are in good agreement with the experimental characterization data showing a significant emission enhancement in the vertical polarization, for which their fluorescence decay lifetimes are substantially shortened by consecutive replication of our unit cell architecture design. Such strongly plasmon−exciton coupling nanocomposites hold great promise for future exploitation and development of quantum dot plasmonic biophotonics and quantum dot plasmonic optoelectronics.