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3 article(s) from Shafiei, Mahnaz

Optimization of Mo/Cr bilayer back contacts for thin-film solar cells

Nima Khoshsirat,
Fawad Ali,
Vincent Tiing Tiong,
Mojtaba Amjadipour,
Hongxia Wang,
Mahnaz Shafiei and
Nunzio Motta

Beilstein J. Nanotechnol. 2018, 9, 2700–2707, doi:10.3762/bjnano.9.252

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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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Full Research Paper

Published 18 Oct 2018

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Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

Muhammad Imran,
Nunzio Motta and
Mahnaz Shafiei

Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202

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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 (V_MePyCz:V_ThFO 16:1), (b) PEO/MePyCz/ThFO (V_MePyCz:V_ThFO 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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Review

Published 13 Aug 2018

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Highly NO₂ sensitive caesium doped graphene oxide conductometric sensors

Carlo Piloto,
Marco Notarianni,
Mahnaz Shafiei,
Elena Taran,
Dilini Galpaya,
Cheng Yan and
Nunzio Motta

Beilstein J. Nanotechnol. 2014, 5, 1073–1081, doi:10.3762/bjnano.5.120

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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 17 Jul 2014

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Optimization of Mo/Cr bilayer back contacts for thin-film solar cells

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

Highly NO2 sensitive caesium doped graphene oxide conductometric sensors

Highly NO₂ sensitive caesium doped graphene oxide conductometric sensors