Listar por tema "nanostructures"
Mostrando ítems 1-16 de 16
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A novel ozone gas sensor based on one-dimensional (1D) α-Ag2WO4 nanostructures
Royal Society of Chemistry (2014-01)This paper reports on a new ozone gas sensor based on α-Ag2WO4 nanorod-like structures. Electrical resistance measurements proved the efficiency of α-Ag2WO4 nanorods, which rendered good sensitivity even for a low ozone ... -
Biexcitons in CdSe nanoplatelets: geometry, binding energy and radiative rate
Royal Society of Chemistry (2022-05-13)Biexciton properties in semiconductor nanostructures are highly sensitive to quantum confinement, relative electron–hole masses, dielectric environment and Coulomb correlations. Here we present a variational Quantum Monte ... -
Diffusion-Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination
Wiley-VCH (2013-09-23)The diffusion–recombination model is a key tool in understanding the photovoltaic operation of solar cells. Dye-sensitized solar cells, organic solar cells, and inorganic semiconductor solar cells are systems affected by ... -
Freezing Capture of Polymorphic Aggregates of Bolaamphiphilic L-Valine-Based Molecular Hydrogelators
WILEY-VCH Verlag GmbH & Co. KGaA (2014-05)Nanostructured xerogels have been prepared by the freeze-drying of hydrogels and aggregates formed by bolaamphiphilic l-valine derivatives after aging under different environmental conditions. A wide variety of shapes and ... -
From Complex Inorganic Oxides to Ag–Bi Nanoalloy: Synthesis by Femtosecond Laser Irradiation
American Chemical Society (2018-08-24)Bimetallic nanoalloys with a wide variety of structures and compositions have been fabricated through many diverse techniques. Generally, various steps and chemicals are involved in their fabrication. In this study, the ... -
Li2SnO3 branched nano- and microstructures with intense and broadband white-light emission
Springer Verlag (2019)Exploiting the synergy between microstructure, morphology and dimensions by suitable nanomaterial engineering, can effectively upgrade the physical properties and material performances. Li2SnO3 elongated nano- and ... -
Modulating the interaction between gold and TiO2 nanowires for enhanced solar driven photoelectrocatalytic hydrogen generation
Royal Society of Chemistry (2015)The interaction strength of Au nanoparticles with pristine and nitrogen doped TiO2 nanowire surfaces was analysed using density functional theory and their significance in enhancing the solar driven photoelectrocatalyti ... -
Morphology Diversity of L‐Phenylalanine‐Based Short Peptide Supramolecular Aggregates and Hydrogels
Wiley (2018-08)Supramolecular aggregates and hydrogels of diverse morphologies can be obtained by replacing the widely studied aromatic N‐capping of phenylalanine derivatives by long alkyl chains. Simple changes in chain length and number ... -
Nanoscale Perovskite‐Sensitized Solar Cell Revisited: Dye‐Cell or Perovskite‐Cell?
Wiley‐VCH Verlag (2020-03-20)A general and straightforward way of preparing few nanometer-sized well-separated MAPbIxBr3-x perovskite photosensitizers on the surface of ~1 μm thick mesoporous TiO2 photoanode was suggested via a two-step sequential ... -
Optomechanical Coupling Optimization in Engineered Nanocavities
Wiley (2024)In optomechanics, the interaction between light and matter is enhanced by engineering cavities where the electromagnetic field and the mechanical displacement are confined simultaneously within the same volume. This leads ... -
Origin of photovoltage in perovskite solar cells probed by first-principles calculations
(2018-06-04)Hybrid halide perovskite solar cells hold great potential for photovoltaic applications, but suffer, however, from anomalous current density-voltage characteristics. With a view to further understanding the performance of ... -
Photoluminescence properties of cerium oxide nanoparticles as a function of lanthanum content
Elsevier (2015)The structural and photoluminescent properties at room temperature of CeO2 and La-doped CeO2 particles were undertaken. The obtained particles were synthesized by a microwave-assisted hydrothermal method (MAH) under different ... -
Self-Assembling of Er2O3–TiO2 Mixed Oxide Nanoplatelets by a Template-Free Solvothermal Route
Wiley (2009)An easy solvothermal route has been developed to synthesize the first mesoporous Er2O3–TiO2 mixed oxide spherical particles composed of crystalline nanoplatelets, with high surface area and narrow pore size distribution. ... -
Structural diversity in the self-assembly of pseudopeptidic macrocycles
Wiley-VCH (2010)The self-assembling abilities of several pseudopeptidic macrocycles have been thoroughly studied both in the solid (SEM, TEM, FTIR) and in solution (NMR, UV, CD, FTIR) states. Detailed microscopy revealed large differences ... -
The role of counter-ions in crystal morphology, surface structure and photocatalytic activity of ZnO crystals grown onto a substrate
Elsevier (2020-11-01)In this contribution, we present an experimental and theoretical investigation of the role of counter-ions in the crystal morphology, surface structure, and photocatalytic activity of hierarchical ZnO nanostructures. The ... -
Tuning Chelation by the Surfactant-Like Peptide A(6)H Using Predetermined pH
American Chemical Society (2014)We examine the self-assembly of a peptide A6H comprising a hexa-alanine sequence A6 with a histidine (H) “head group”, which chelates Zn2+ cations. We study the self-assembly of A6H and binding of Zn2+ ions in ZnCl2 ...