11 article(s) from Motta, Nunzio
- Full Research Paper
- Published 18 Oct 2018
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Figure 1: Samples after adhesion test. (a–c) Mo/SLG; (d–f) Mo/Cr/SLG. (a, d) 100 W, 10 mTorr, (b, e) 150 W, 5...
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Figure 2: Sheet resistivity of Mo/Cr films prepared at different values of sputtering power and pressure.
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Figure 3: Surface SEM images of Mo/Cr films prepared at sputtering power and pressure values of (a) 100 W, 3 ...
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Figure 4: Average surface roughness of Mo/Cr films prepared at different sputtering powers and pressures.
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Figure 5: X-ray diffraction peaks of Mo/Cr films prepared using different values of sputtering power and pres...
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Figure 6: Optical reflectance of Mo/Cr films prepared using different values of sputtering power and pressure....
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Figure 7: XPS depth profile of the Mo/Cr films deposited at 200 W and 3 mTorr.
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Figure 8: J–V characteristics of the CZTS cell with Mo/Cr bilayer back contact.
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Supp. Info
- Review
- Published 13 Aug 2018
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Figure 1: The annual number of patents and journal article publications on the topic of electrospun 1D nanoma...
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Figure 2: (a) SEM image; (b) size distribution of fiber diameters and (c) STEM image of electrospun nanofiber...
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Figure 3: (a) Side-by-side electrospinning apparatus and (b) SEM image of poly(acrylonitrile)/polyurethane (P...
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Figure 4: (a, b) Typical SEM images of the electrospun bi-component TiO2/SnO2 nanofibers; (c) EDS microanalys...
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Figure 5: (a) Schematic illustration of the setup using a dual-capillary spinneret to directly electrospin ho...
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Figure 6: (a–c) Schematic illustrations of coaxial electrospinning using mineral oil in the core and composit...
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Figure 7: (a) Schematic diagram of the sequential fabrication of a PPy@SnO2 tube-in-tube structure. (b) FE-SE...
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Figure 8: (a) Schematic illustration of the processing steps for SnO2 NTs functionalized by bio-inspired cata...
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Figure 9: (a) Schematic illustration of synthetic process for the Pd@ZnO–WO3 NFs; (b) SEM image of as-spun am...
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Figure 10: SEM images of (a) pure In2O3 porous NTs; (b) Nd-doped In2O3; (c) TEM image of Nd-doped In2O3 porous...
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Figure 11: SEM images of (a) pristine SnO2 and (b) 3ICTO; TEM images of (c) pristine SnO2 NRs; (d) 3ICTO NRs; ...
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Figure 12: SEM images of (a), (a1) pure TiO2 NFs; (b), (b1) ITCN1; and (c), (c1) ITCN2. (d) The response–recov...
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Figure 13: (a) Synthesis strategy for branch-like α-Fe2O3/TiO2 hierarchical heterostructures; FESEM images of ...
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Figure 14: SEM images of (a) pure TiO2 NFs and (b,c) TiO2/ZnO heterostructures. (d–g) STEM image of TiO2/ZnO h...
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Figure 15: SEM image of (a) PA6 NFs; (b) PANI/PA6 NFs; (c) PANI/PA6 NFs sputtered for 30 min; (d) TiO2–PANI/PA...
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Figure 16: (a) SEM images of the hierarchical SnO2/PAN p–n junction nanostructures at different hydrothermal r...
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Figure 17: rGO/Pd co-loaded SnO2 NFs: (a,c) low- and (b,d) high-magnification FE-SEM images. (e) Normalized dy...
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Figure 18: (a) 3D scheme representation; (b) real experimental setup of a Love-wave sensor with two RF ports, ...
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Figure 19: FE-SEM images of PA 6 NFN membranes formed with different voltages: (a, b) 20 kV and (c, d) 30 kV; ...
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Figure 20: SEM images of (a) ZnO and (b) CeO2/ZnO nanofibers; (c) The step response for adsorption and desorpt...
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Figure 21: FE-SEM images of electrospun (a) pure porous PS NFs and (b) G-COOH/PS composite NFs. (c) Dynamic re...
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Figure 22: SEM images of electrospun nanofibrous membranes of (a) PMMA and (b) ethyl cellulose (EC). Excitatio...
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Figure 23: FLM images of (a) PEO/MePyCz/ThFO (VMePyCz:VThFO 16:1), (b) PEO/MePyCz/ThFO (VMePyCz:VThFO 4:1) and...
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Figure 24: Photographs of electrospun fiber mat embedded with PCDA–biotin before (a) and after (b) UV-irradiat...
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Supp. Info
- Review
- Published 01 Feb 2016
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Figure 1: (a) Global energy consumption growth from 1965 to 2013. (b) The share of different energy sources f...
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Figure 2: (a) Carbon concentration in the energy mixture from 1890–2100 (projected), i.e., kilograms of carbo...
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Figure 3: Hybridization states of carbon-based nanomaterials. Reprinted with permission from [19]. Copyright (200...
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Figure 4: Structure of the most significant fullerenes, C60 and the C70. All fullerenes exhibit hexagonal and...
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Figure 5: Schematic depiction of an auto-loading version of an arc-discharge apparatus used for fullerene pro...
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Figure 6: Diffusion flame chamber for fullerene production. Reprinted with permission from [31]. Copyright (2000)...
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Figure 7: Formation of C60 through dehydrogenation/dehydrochlorination. Reprinted with permission from [32]. Copy...
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Figure 8: Synthesis of PC61BM by reaction between C60 and diazoalacane with subsequent refluxing with o-dichl...
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Figure 9: Graphene and carbon nanotubes as a (a) single-walled carbon nanotube (SWCNT) and (b) multiwall carb...
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Figure 10: Schematic models for SWCNTs with the nanotube axis normal to the chiral vector, which, in turn, is ...
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Figure 11: Schematic representation of methods used for carbon nanotube synthesis: (a) arc discharge; (b) chem...
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Figure 12: Honeycomb lattice of graphene. Graphene layers can be stacked into graphite or rolled up into carbo...
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Figure 13: (a) Representation of the electronic band structure and Brillouin zone of graphene; (b) The two gra...
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Figure 14: Several methods for the mass production of graphene that allow a wide choice in terms of size, qual...
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Figure 15: Graphene-based display and electronic devices. Display applications are shown in green; electronic ...
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Figure 16: (a) Schematic illustration and photo of the electrochemical exfoliation process for graphite. (b) P...
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Figure 17: Chemical structure of graphene oxide with functional groups. A: Epoxy bridges, B: hydroxy groups, C...
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Figure 18: Atomic resolution, aberration-corrected TEM image of a single layer, H-plasma-reduced GO membrane. ...
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Figure 19: (a) Low magnification and (b) high magnification SEM images of graphite oxide flakes [112].
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Figure 20: High resolution C 1s XPS spectra: deconvoluted peaks with increasing reduction temperature (Tr). (a...
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Figure 21: Plot of sheet resistance against annealing temperature with a comparison to key carbon and oxygen r...
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Figure 22: CVD graphene. (a) Schematic of the transfer of graphene produced on Cu using the roll-to-roll metho...
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Figure 23: Millimeter-sized graphene grains produced on polished and annealed Cu foils. (a) Schematic of the c...
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Figure 24: Millimeter-sized graphene grains produced on the inside of enclosure-like Cu structures. (a) Schema...
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Figure 25: Millimeter-sized graphene grains made on resolidified Cu. (a) Schematic of the Cu resolidification ...
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Figure 26: The characteristic tetrahedron building block of all SiC crystals. Four carbon atoms are covalently...
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Figure 27: Schematic representation of the stacking sequence of hexagonal SiC bilayers for 2H, 3C, 4H and 6H p...
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Figure 28: Number of graphene layers grown by annealing 3C-SiC for 10 h in UHV as a function of temperature. R...
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Figure 29: TEM images of MLG on the C-face. (a) A cross-sectional TEM image. (b) A low-magnification TEM image...
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Figure 30: High frequency graphene transistor. (a) and (b) Structure of a graphene-based FET for an analogue r...
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Figure 31: Record solar cell efficiencies, worldwide, as reported by NREL in 2014 [180].
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Figure 32: Photocurrent generation steps in an organic solar cell. Step 1: photon absorption in the conducting...
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Figure 33: (a) Electron transfer from P3HT to PCBM after generation of the exciton at the interface of the two...
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Figure 34: (a) Schematic of a regular organic solar cell structure. (b) Schematic of an inverted organic solar...
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Figure 35: Simple equivalent circuit for a solar cell.
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Figure 36: I–V curves of a solar cell. IL indicates the current under illumination. Voc and Isc represent the ...
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Figure 37: Detailed equivalent circuit for a solar cell.
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Figure 38: UV–vis spectra of PC71BM and PC61BM, both in toluene. To illustrate the contribution of MDMO-PPV to...
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Figure 39: (a) Molecular dynamics simulations of P3HT wrapped around a SWNT (15,0). Reprinted with permission ...
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Figure 40: (a) and (b) TEM images of P3HT wrapping around a SWNT (7,6) (images taken at QUT, not yet published...
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Figure 41: Schematic of an organic solar cell with a transparent graphene electrode. Reprinted with permission...
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Figure 42: (a) Schematic of a photovoltaic device with a P3HT/GO–PITC thin film as the active layer and the st...
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Figure 43: (a) Schematic illustration of a device structure with GO as the buffer layer. (b) Energy level diag...
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Figure 44: Device structures (a) and energy level diagrams (b) of the normal device and the inverted device wi...
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Figure 45: Addition of a small amount of SWCNTs into the GO buffer layer can increase the FF and JSC of device...
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Figure 46: (a) Structure of carbon solar cells where TFB and PEDOT/PSS are the electron-blocking and hole-cond...
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Figure 47: Schematic of the two basic all carbon nanomaterial-based solar cell device structures: (a) a typica...
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Figure 48: Energy density vs power density (Ragone plot) for various energy storage devices [257].
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Figure 49: Hierarchical classification of supercapacitors and related types [259].
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Figure 50: Charge and discharge processes of an EDLC.
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Figure 51: Models of the electrical double layer at a positively charged surface: (a) the Helmholtz model, (b)...
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Figure 52: Simple equivalent circuit.
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Figure 53: CV curve of an ideal supercapacitor.
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Figure 54: Simulation of CV curves with increasing internal resistance (1, 5, 10, 25 and 50 Ω) at 20 mV/s scan...
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Figure 55: Simulation of the charge/discharge curves with increasing internal resistance (0, 1, 5, 10 and 25 Ω...
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Figure 56: Schematic representation of the Nyquist impedance plot of an ideal capacitor (vertical thin line) a...
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Figure 57: Schematic illustration of the space in a carbon nanotube bundle available for the storage of electr...
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Figure 58: Comparison of conducting paths for electron and electrolyte ions in aligned carbon nanotubes and gr...
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Figure 59: CV curves of the EDLC using the SWNT solid sheet (red) and as-grown forest (black) as electrodes, c...
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Figure 60: SEM images of CNT–carbon aerogel nanocomposites. Reprinted with permission from [289]. Copyright (2008) ...
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Figure 61: Graphene-based EDLCs utilizing chemically modified graphene as electrode materials. (a) Scanning el...
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Figure 62: Morphology of graphene oxide and graphene-based materials. (a) Tapping-mode AFM image of graphene o...
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Figure 63: (a–d) Schematic illustration of the process to make laser-scribed graphene-based electrochemical ca...
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Figure 64: (a–c) Schematic diagram showing the fabrication process for a laser-scribed graphene micro-supercap...
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Figure 65: (a) SEM image of the interior microstructure of a graphene hydrogel. (b) Photograph of the flexible...
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Figure 66: (a) Schematic illustration of a supercapacitor cell fabricated from reduced graphite oxide (rGO) an...
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Figure 67: (a) and (b) are schematic, equivalent circuit illustrations for a polymer solar cell and a supercap...
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- Full Research Paper
- Published 17 Jul 2014
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Figure 1: (a) Low magnification and (b) high magnification SEM images of graphite oxide flakes.
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Figure 2: AFM and KPFM images of (a) and (b) a GO flake (2 × 2 μm); (c) and (d) a GO-Cs flake (1.4 × 1.4 μm).
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Figure 3: (a) XPS survey spectrum of GO (blue line) and GO-Cs (red line); High resolution XPS C1s spectra of ...
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Figure 4: Raman spectra of GO-Cs and GO, displaying intense D and G peaks at ≈1380 and ≈1600 cm−1, respective...
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Figure 5: Response of the GO and GO-Cs based sensors as a function of NO2 concentration. The inset shows the ...
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Figure 6: Response of (a) GO-Cs and GO based sensors towards NO2 with concentrations higher than 1 ppm; (b) G...
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- Full Research Paper
- Published 16 Apr 2014
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Figure 1: FE-SEM images showing the encapsulation of 10-nm-diameter NDs into ZnO nanorods and microrods. (a) ...
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Figure 2: FE-SEM images showing the encapsulation of 40-nm-diameter NDs into ZnO nanorods. (a) ZnO nanorods c...
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Figure 3: FE-SEM images showing the embedment of 200-nm-diameter polymer nanobeads in ZnO nanorods. (a) ZnO n...
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Figure 4: FE-SEM Images showing the encapsulation of nanobeads into ZnO nano/microrods after different regrow...
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Figure 5: (a) Illustration of the encapsulation process of a surface-attached nanoparticle into the growing c...
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Figure 6: (a) Micro-PL spectra taken from a single ZnO nanorod containing NDs, a nanorod with NDs in the surf...
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Low-temperature synthesis of carbon nanotubes on indium tin oxide electrodes for organic solar cells
- Full Research Paper
- Published 19 Jul 2012
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Figure 1: SEM images of MWCNTs grown on ITO-coated glass by CVD at: (a) 550 °C, (b) 525 °C, (c) 500 °C.
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Figure 2: Transmittance spectra of the electrodes (left Y axis), compared to the absorption spectrum of the P...
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Figure 3: (a) SEM image showing the surface of Sample C, on which a low density mat of MWCNTs is grown after ...
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Figure 4: WF levels for cells with ITO (left) and ITO–CNT (right) electrode. (All reported values are in eV a...
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Figure 5: Current–voltage characteristic and output power of P3HT:PCBM solar cells: (a) Cell C and cell C1, c...
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Figure 6: Equivalent circuit of the ideal organic solar cell.
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Figure 7: Schematics of the preparation of a P3HT:PCBM solar cell with CNT-enhanced ITO.
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- Full Research Paper
- Published 02 May 2012
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Figure 1: Scanning electron microscopy images of (a) the drop-cast ZnO nanoparticle sensor surface; (b) the p...
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Figure 2: Transmission electron microscopy images and size-distribution analyses of ZnO nanocrystals after he...
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Figure 3: FTIR spectra of (a) pure ZnO nanowire sensor; (b) dodecanethiol-coated ZnO nanowire sensor; and (c)...
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Figure 4: XPS spectra of (a) the sulfur peak of DT-functionalised ZnO NW sensor surface and (b) the amide pea...
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Figure 5: TG and DTG of (a) DT-coated and (b) THMA-coated ZnO obtained in air at 5 °C·min−1.
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Figure 6: Dynamic response of the same ZnO nanowire sensor, (a) before and after THMA functionalization and (...
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Figure 7: Dynamic response of the same ZnO nanowire sensor, (a) before and after coating with ZnO nanoparticl...
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- Letter
- Published 02 May 2012
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Figure 1: (a) An optical photograph of a strap-shaped ZnO nanowire film; (b) SEM image of the nanowire film; ...
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Figure 2: Room-temperature PL spectrum of the ZnO nanowire film. The insert is a PLE spectrum.
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Figure 3: I–V curves of ZnO nanowire films under UV illumination and in the dark. (a) The device in PDMS with...
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Figure 4: (a,b) UV photoresponse characteristics of ZnO nanowire sheets in air and in PDMS, respectively. The...
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Figure 5: (a) Illustration of a ZnO nanowire in cross-linked PDMS. The blue lines represent PDMS molecule cha...
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Figure 6: Illustration for the device fabrication process.
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