ListarQFA_Articles por tema "quantum dots"

Mostrando ítems 1-6 de 6

    • closedAccess   Auger Recombination Suppression in Nanocrystals with Asymmetric Electron–Hole Confinement 

      Climente, Juan I.; Movilla, Jose L.; Planelles, Josep WILEY-VCH Verlag (2012)
      Type II and quasi-type II nanocrystals with thick shells exhibit reduced blinking. However, after a number of monolayers, the influence of the shell thickness is found to vanish. Using a two-band Kane Hamiltonian, it is ...

    • openAccess   Beyond universal volume scaling: tailoring two-photon absorption in nanomaterials by heterostructure design 

      Alo, Arthur; Barros, Leonardo; Nagamine, Gabriel; Cotrino Lemus, Jonathan; Planelles, Josep; Movilla, Jose L.; Climente, Juan I.; Lee, Hak June; Bae, Wan Ki; Padilha, Lazaro ACS Publications (American Chemical Society) (2023-07-28)
      Colloidal semiconductor nanomaterials present broadband, with large cross-section, two-photon absorption (2PA) spectra, which turn them into an important platform for applications that benefit from a high nonlinear optical ...

    • openAccess   Chemi-Structural Stabilization of Formamidinium Lead Iodide Perovskite by Using Embedded Quantum Dots 

      Masi, Sofia; Echeverría-Arrondo, Carlos; muhammed, kunnummal; Ngo, Thi Tuyen; Mendez, Perla F.; López-Fraguas, Eduardo; Macias-Pinilla, David F.; Planelles, Josep; Climente, Juan I.; Mora-Sero, Ivan American Chemical Society (2020-01-6)
      The approaches to stabilize the perovskite structure of formamidinium lead iodide (FAPI) commonly result in a blue shift of the band gap, which limits the maximum photoconversion efficiency. Here, we report the use of PbS ...

    • openAccess   Coulomb interaction signatures in self-assembled lateral quantum dot molecules 

      Zhou, Xinran R.; Lee, Jihoon H.; Salamo, Gregory J.; Royo, Miquel; Climente, Juan I.; Doty, Matthew F. American Physical Society (2013)
      We use photoluminescence spectroscopy to investigate the ground state of single self-assembled InGaAs lateral quantum dot molecules. We apply a voltage along the growth direction that allows us to control the total ...

    • closedAccess   Synthesis of Anisotropic CdSe/CdS Dot-in-Giant-Rod Nanocrystals with Persistent Blue-Shifted Biexciton Emission 

      Polovitsyn, Anatolii; Khan, Ali Hossain; Angeloni, Ilaria; Grim, Joel Q.; Planelles, Josep; Climente, Juan I. American Chemical Society (2018)
      Anisotropic single-phase wurtzite CdSe/CdS nanocrystals were synthesized by colloidal chemistry, introducing ZnCl2 to increase the shell growth in the radial direction. As a result, dot-in-giant-rod nanocrystals were ...

    • openAccess   Two Biexciton Types Coexisting in Coupled Quantum Dot Molecules 

      Frenkel, Nadav; Scharf, Einav; Lubin, Gur; Levi, Adar; Panfil, Yossef E.; Ossia, Yonatan; Planelles, Josep; Climente, Juan I.; Banin, Uri; Oron, Dan American Chemical Society (2023)
      Coupled colloidal quantum dot molecules (CQDMs) are an emerging class of nanomaterials, manifesting two coupled emission centers and thus introducing additional degrees of freedom for designing quantum-dot-based technologies. ...