ListarQFA_Articles por tema "nanocrystals"

Mostrando ítems 1-7 de 7

    • 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   Correlation between structural and electronic order-disorder effects and optical properties in ZnO nanocrystals 

      La Porta, Felipe A.; Andres, Juan; Vismara, M. V. G.; Graeff, C. F. O.; Sambrano, Julio; Li, Maximo Siu; Varela, José A.; Longo, Elson Royal Society of Chemistry (2014-10)
      The correlation between structural and electronic order–disorder effects in understanding the optical properties of flower-like ZnO nanocrystals synthesized by the microwave-assisted hydrothermal method at low temperatures ...

    • openAccess   In situ Transmission Electron Microscopy observation of Ag nanocrystal evolution by surfactant free electron-driven synthesis 

      Longo, Elson; Avansi, Waldir; Bettini, Jefferson; Andres, Juan; Gracia, Lourdes Nature Publishing Group (2016)
      The study of the interaction of electron irradiation with matter and the response of the material to the passage of electrons is a very challenging problem. However, the growth mechanism observed during nanostructural ...

    • openAccess   Manganese Defective Clustering: Influence on the Spectroscopic Features of Ceria-Based Nanomaterials 

      Amaral, D.C.; Rosa Rocha, Leandro Silva; Granone, Luis Ignacio; Lage, M.M.; Churio, Maria Sandra; Sanchez, M. D.; Longo, Elson; Nascimento, H. M. S.; Assis, Marcelo de; Moura, F.; Ponce, M. A. American Chemical Society (2023-07-21)
      The influence of manganese modification on the spectroscopic features of manganese-doped CeO2 systems synthesized by the microwave-assisted hydrothermal route and their correlation with the presence of O defective structures ...

    • openAccess   Photoluminescence Properties of Nanocrystals 

      Cavalcante, Laécio Santos; Sczancoski, Júlio César; Varela, José A.; Longo, Elson; Andres, Juan; Rout, S. K. Hindawi Publishing Corporation (2012)
      Photoluminescence (PL) is an optical phenomenon exhibited by some semiconductor materials when excited by an electromagnetic radiation source. After the excitation and recombination processes, these kinds of materials are ...

    • 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   The Relationship between Photoluminescence Emissions and Photocatalytic Activity of CeO2 Nanocrystals 

      Piccoli Moreno, Henrique; Domingues, G.L.; Assis, Marcelo de; Ortega, Pedro; Mastelaro, Valmor Roberto; Arjona Ramírez, Miguel; Simões, Alexandre American Chemical Society (2023-03-02)
      In this work, we focus on understanding the morphology and photocatalytic properties of CeO2 nanocrystals (NCs) synthesized via a microwave-assisted solvothermal method using acetone and ethanol as solvents. Wulff constructions ...