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Ara mostrant els elements 1-9 d 9

    • openAccess   Band structure engineering via piezoelectric fields in strained anisotropic CdSe/CdS nanocrystals 

      Christodoulou, Sotirios; Rajadell Viciano, Fernando; Casu, Alberto; Vaccaro, Gianfranco; Grim, Joel Q.; Genovese, Alessandro; Manna, Liberato; Climente, Juan I.; Meinardi, Francesco; Rainò, Gabriele; Stöferle, Thilo; Mahrt, Rainer F.; Planelles, Josep; Brovelli, Sergio; Moreels, Iwan Nature Publishing Group (2015)
      Strain in colloidal heteronanocrystals with non-centrosymmetric lattices presents a unique opportunity for controlling optoelectronic properties and adds a new degree of freedom to existing wavefunction engineering and ...

    • openAccess   CdSe/CdS/CdTe Core/Barrier/Crown Nanoplatelets: Synthesis, Optoelectronic Properties, and Multiphoton Fluorescence Upconversion 

      Khan, Ali Hossain; Bertrand, Guillaume H. V.; Teitelboim, Ayelet; M, Chandra Sekhar; Polovitsyn, Anatolii; Brescia, Rosaria; Planelles, Josep; Climente, Juan I.; Oron, Dan; Moreels, Iwan American Chemical Society (2020-04-10)
      Colloidal two-dimensional (2D) nanoplatelet heterostructures are particularly interesting as they combine strong confinement of excitons in 2D materials with a wide range of possible semiconductor junctions due to a ...

    • closedAccess   Chloride-Induced Thickness Control in CdSe Nanoplatelets 

      Christodoulou, Sotirios; Climente, Juan I.; Planelles, Josep; Brescia, Rosaria; Prato, Mirko; Martín García, Beatriz; Khan, Ali Hossain; Moreels, Iwan ACS Publications (2018)
      Current colloidal synthesis methods for CdSe nanoplatelets (NPLs) routinely yield samples that emit, in discrete steps, from 460 to 550 nm. A significant challenge lies with obtaining thicker NPLs, to further widen the ...

    • openAccess   Piezoelectric Control of the Exciton Wave Function in Colloidal CdSe/CdS Nanocrystals 

      Segarra, Carlos; Climente, Juan I.; Polovitsyn, Anatolii; Rajadell Viciano, Fernando; Moreels, Iwan; Planelles, Josep American Chemical Society (2016-05-25)
      Using multiband k·p calculations, we show that strain-engineered piezoelectricity is a powerful tool to modulate the electron−hole spatial separation in a wide class of wurtzite CdSe/CdS nanocrystals. The inherent ...

    • openAccess   Preferred Growth Direction by PbS Nanoplatelets Preserves Perovskite Infrared Light Harvesting for Stable, Reproducible, and Efficient Solar Cells 

      Ansisar Erazo, Eider; Sánchez-Godoy, H. E.; Erazo, Eider A.; Gualdrón Reyes, Andrés Fabián; Khan, Ali Hossain; Agouram, Said; Barea, Eva M; Zarazúa, Isaac; Ortiz, Pablo; Cortés, María Teresa; Muñoz-Sanjosé, Vicente; Moreels, Iwan; Masi, Sofia; Mora-Sero, Ivan Wiley (2020)
      Formamidinium‐based perovskite solar cells (PSCs) present the maximum theoretical efficiency of the lead perovskite family. However, formamidinium perovskite exhibits significant degradation in air. The surface chemistry ...

    • openAccess   Role of thermally occupied hole states in room-temperature broadband gain in CdSe/CdS giant-shell nanocrystals 

      Tanghe, Ivo; Llusar, Jordi; Climente, Juan I.; Barker, Alex J.; Paternò, Giuseppe Maria; Scotognella, Francesco; Polovitsyn, Anatolii; Khan, Ali Hossain; hens, zeger; Van Thourhout, Dries; Geiregat, Pieter; Moreels, Iwan Wiley (2022)
      Growing CdSe/CdS nanocrystals from a large CdSe core, and employing a giant CdS shell, a continuous, broadband gain spectrum, covering the spectral range between the CdSe and the CdS band edge, is induced. As revealed by ...

    • closedAccess   Semiconductor Nanostructures for Electronic and Opto-Electronic Device Applications 

      Moreels, Iwan; Brovelli, Sergio; Ribierre, Jean-Charles; Mora-Sero, Ivan Wiley (2020)

    • openAccess   Synthesis of Air-Stable CdSe/ZnS Core–Shell Nanoplatelets with Tunable Emission Wavelength 

      Polovitsyn, Anatolii; Dang, Zhiya; Movilla, Jose L.; Martín García, Beatriz; Khan, Ali Hossain; Bertrand, Guillaume H. V.; Brescia, Rosaria; Moreels, Iwan American Chemical Society (2017)
      In the past few years, several protocols have been reported on the synthesis of CdSe nanoplatelets with narrow photoluminescence (PL) spectrum, high PL quantum efficiency, and short exciton lifetime. The corresponding ...

    • openAccess   Two-Photon Induced Blue Shift of Core and Shell Optical Transitions in Colloidal CdSe/CdS quasi-type II Quantum Rods 

      Allione, Marco; Ballester Caudet, Ana; Li, Hongbo; Comin, Alberto; Movilla, Jose L.; Climente, Juan I.; Manna, Liberato; Moreels, Iwan American Chemical Society (2013-03)
      The spectral dependence of the two-photon absorption in CdSe/CdS core/shell nanocrystal heterorods has been studied via two-photon-induced luminescence excitation spectroscopy. We verified that the two-photon absorption ...