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  • News

Titanium sites on ZnO nanopyramids (ACS Appl Mater Interfaces 11, 2019, 15881)

8th October 2019 by Davide Mariotti

Ti-containing species are grown-on-tip ZnO nanopyramids for surface functionalization. This yields a remarkable enhancement of photoactivated superhydrophilic behavior, self-cleaning ability, and photocatalytic performances in comparison to bare ZnO. The reasons accounting for such an improvement are unravelled by a multitechnique analysis, elucidating the interplay between material chemico-physical properties and the corresponding functional behavior (ACS Applied Materials & Interfaces 11, 2019, 15881).

Filed Under: News

Ultra-small stable alfa-Sn quantum dots (Nature Comm 10, 2019, 817)

10th April 2019 by Davide Mariotti

Nanocrystals sometimes adopt unusual crystal structure configurations in order to maintain structural stability with increasingly large surface-to-volume ratios. The understanding of these transformations is of great scientific interest and represents an opportunity to achieve beneficial materials properties resulting from different crystal arrangements. Here, the phase transformation from α to β phases of tin (Sn) nanocrystals is investigated in nanocrystals (Nature Communications 10, 2019, 817).

Filed Under: News

The band energy of multifunctional MnO2 (Nanoscale 11, 2019, 98)

10th April 2019 by Davide Mariotti

Supported MnO2-based nanomaterials were fabricated on fluorine-doped tin oxide substrates using plasma enhanced-chemical vapor deposition. A detailed and in-depth analysis was carried out to understand the intriguing band energy structure of this interesting material.(Nanoscale 11, 2019, 98).

Filed Under: News

Co-oxide quantum dots by microplasma (Green Chem 20, 2018, 2101)

27th June 2018 by Davide Mariotti

Plasma at the gas/liquid interface can promote a complex mixture of reactions in solution and microplasma-assisted direct-current anodic oxidation is an efficient and green process in synthesising nanoscale materials for various applications. In this study, we demonstrated the direct synthesis of crystalline Co3O4 quantum dots, ca. 2–5 nm in diameter, by the direct anodization of Co foil with charge balanced by the microplasma at the flowing-helium/pure-ethanol interface under ambient conditions.(Green Chemistry 20, 2018, 2101).

Filed Under: News

Type-I solar cells (Nano Energy 50, 2018, 245-255)

27th June 2018 by Davide Mariotti

Devices with Type-I alignment represent a novel photovoltaic architecture. A type-I alignment leads to the possibility of enhanced carrier extraction and in general synergies between the respective materials qualities (e.g. carrier multiplication for Si NCs and exceptional transport for perovskites). The atypical band alignment forming a type-I heterojunction has not been predominantly utilized and is believed to represent a novel approach to the wider family of QD solar cell device architectures.(Nano Energy 50, 2018, 245–255).

Filed Under: News

Solar cells with SiSn nanocrystals (Materials Today Energy 7, 2018, 87)

29th January 2018 by Davide Mariotti

Silicon-tin alloy nanocrystals with quantum confinement effect for photovoltaics. Synthetized nanoparticles with average of 3 nm in diameter and optical bandgap of 0.81 eV at room temperature were obtained with a Si (0.88)/Sn (0.12) alloyed composition that corresponds to a ratio of about eight Si atoms for every Sn atom. The potential of silicon-tin nanocrystals as a photovoltaic material is assessed and an enhancement of the solar cells performance is demonstrated due to the extended spectral range and increased absorption. (Materials Today Energy 7, 2018, 87).

Filed Under: News

MABI & silicon nanocrystals (Nanoscale, 2017, 9, 18759)

29th January 2018 by Davide Mariotti

Zero-dimensional methylammonium iodo bismuthate (MABI) can accommodate
silicon nanocrystals
, leading to solar cells with an enhancement in the short-circuit current. Through the material MABI, we demonstrate a promising alternative to the organometal trihalide perovskite class and present a model material for future composite third-generation photovoltaics. (Nanoscale, 2017, 9, 18759).

Filed Under: News

ZnO goes porous (Plasma Process Polym 14, 2017, 1700052)

6th January 2018 by Davide Mariotti

Porous ZnO nanocrystalline films very easy, fast, and scalable one-step process synthesis. Nanostructures agglomerate to form a porous film at the substrate. Energy band structure of the deposited film has been investigated to understand the corresponding band alignment, which is relevant to many applications. (Plasma Process Polym 14, 2017, 1700052).

Filed Under: News

Covering Silicon Nanocrystals (Adv Funct Mater 27, 2017, 1701898)

18th October 2017 by Davide Mariotti

Combining quantum confinement of the electronic states with OH surface functionalization can be used as a guideline for bandgap engineering. Complementary to first-principles calculations, the
photoluminescence (PL) wavelength of Si-NCs confirms this exciting possibility (Adv Funct Mater 27, 2017, 1701898).

Filed Under: News

Ultrathin silicon nanocrystal solar cells (Energy Sci Eng 5, 2017, 184)

18th October 2017 by Davide Mariotti

A scalable technology for the fabrication of ultrathin films and integration in solar cells. The
films produced with this approach yield good and stable devices and highly relevant for a very wide range of applications where the formation of high-quality ultrathin films of quantum dots with controllable thickness and smoothness is required (Energy Sci Eng 5, 2017, 184).

Filed Under: News

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Plasma Science and Technology > Materials Processing and Nanotechnology > Energy and Environment

News and Events

  • Solar-thermal conversion with nano-Oxides (Nano Energy 108 2023 108112)
  • CNT for solar-thermal energy (Nanomaterials 12, 2022, 2705)
  • Plasma direct exsolution (Adv Energy Mater 12, 2022, 2201131)
  • D01 – Plasma Electrochemistry and Catalysis 2
  • Doping … more and better (J Mater Sci 57, 2022, 13314)

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