Search Results - "Fontcuberta I Morral, A."

Fundamental aspects to localize self-catalyzed III-V nanowires on silicon by Vukajlovic-Plestina, J., Kim, W., Ghisalberti, L., Varnavides, G., Tütüncuoglu, G., Potts, H., Friedl, M., Güniat, L., Carter, W. C., Dubrovskii, V. G., Fontcuberta i Morral, A.

“…III-V semiconductor nanowires deterministically placed on top of silicon electronic platform would open many avenues in silicon-based photonics, quantum…”
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Gold-Free GaAs Nanowire Synthesis and Optical Properties by Morral, A. F.

“…To date, the use of gold for the synthesis of nanowires has proven to be nearly impossible to circumvent, regardless of the potential negative effects on the…”
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General theoretical considerations on nanowire solar cell designs by Kandala, A., Betti, T., Fontcuberta i Morral, A.

“…We propose two novel solar cell designs, tapping the advantages of semiconductor nanowires. A silicon (Si) tandem cell can be achieved by growing sub‐5 nm p–n…”
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Impact of surfaces on the optical properties of GaAs nanowires by Demichel, O., Heiss, M., Bleuse, J., Mariette, H., Fontcuberta i Morral, A.

“…The effect of surfaces on the optical properties of GaAs nanowires is evidenced by comparing nanowires with or without an AlGaAs capping shell as a function of…”
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Imaging Stray Magnetic Field of Individual Ferromagnetic Nanotubes by Vasyukov, D, Ceccarelli, L, Wyss, M, Gross, B, Schwarb, A, Mehlin, A, Rossi, N, Tütüncüoglu, G, Heimbach, F, Zamani, R. R, Kovács, A, Fontcuberta i Morral, A, Grundler, D, Poggio, M

“…We use a scanning nanometer-scale superconducting quantum interference device to map the stray magnetic field produced by individual ferromagnetic nanotubes…”
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Three-dimensional nanoscale study of Al segregation and quantum dot formation in GaAs/AlGaAs core-shell nanowires by Mancini, L., Fontana, Y., Conesa-Boj, S., Blum, I., Vurpillot, F., Francaviglia, L., Russo-Averchi, E., Heiss, M., Arbiol, J., Morral, A. Fontcuberta i, Rigutti, L.

“…GaAs/Al-GaAs core-shell nanowires fabricated by molecular beam epitaxy contain quantum confining structures susceptible of producing narrow photoluminescence…”
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Revealing Large-Scale Homogeneity and Trace Impurity Sensitivity of GaAs Nanoscale Membranes by Yang, Z, Surrente, A, Tutuncuoglu, G, Galkowski, K, Cazaban-Carrazé, M, Amaduzzi, F, Leroux, P, Maude, D. K, Fontcuberta i Morral, A, Plochocka, P

“…III–V nanostructures have the potential to revolutionize optoelectronics and energy harvesting. For this to become a reality, critical issues such as…”
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Enhancement of Second Harmonic Signal in Nanofabricated Cones by Dutto, F, Heiss, M, Lovera, A, López-Sánchez, O, Fontcuberta i Morral, A, Radenovic, A

“…Geometrical effects in optical nanostructures on nanoscale can lead to interesting phenomena such as inhibition of spontaneous emission, , high-reflecting…”
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Reversal mechanism of an individual Ni nanotube simultaneously studied by torque and SQUID magnetometry by Buchter, A, Nagel, J, Rüffer, D, Xue, F, Weber, D P, Kieler, O F, Weimann, T, Kohlmann, J, Zorin, A B, Russo-Averchi, E, Huber, R, Berberich, P, Fontcuberta i Morral, A, Kemmler, M, Kleiner, R, Koelle, D, Grundler, D, Poggio, M

“…Using an optimally coupled nanometer-scale SQUID, we measure the magnetic flux originating from an individual ferromagnetic Ni nanotube attached to a Si…”
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Shedding light on the growth of amorphous, polymorphous, protocrystalline and microcrystalline silicon thin films by Fontcuberta i Morral, A, Roca i Cabarrocas, P

“…We focus here on a study of the growth of polymorphous and protocrystalline silicon materials with respect to the well-established amorphous and…”
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Ga-assisted catalyst-free growth mechanism of GaAs nanowires by molecular beam epitaxy by Colombo, C., Spirkoska, D., Frimmer, M., Abstreiter, G., Fontcuberta i Morral, A.

“…The mechanisms of Ga-assisted GaAs nanowires grown by molecular beam epitaxy are addressed. The axial and radial growth rates as a function of the Ga rate and…”
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Effect of the pn junction engineering on Si microwire-array solar cells by Dalmau Mallorquí, A., Epple, F. M., Fan, D., Demichel, O., Fontcuberta i Morral, A.

“…We report on the impact of the doping concentration design on the performance of silicon microwire arrays as photovoltaic devices. We have fabricated arrays…”
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Structural and optical properties of high quality zinc-blende/wurtzite GaAs nanowire heterostructures by Spirkoska, D., Arbiol, J., Gustafsson, A., Conesa-Boj, S., Glas, F., Zardo, I., Heigoldt, M., Gass, M. H., Bleloch, A. L., Estrade, S., Kaniber, M., Rossler, J., Peiro, F., Morante, J. R., Abstreiter, G., Samuelson, L., Fontcuberta i Morral, A.

“…The structural and optical properties of three different kinds of GaAs nanowires with 100% zinc-blende structure and with an average of 30% and 70% wurtzite…”
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Quantum Interference Control of Femtosecond, μA Current Bursts in Single GaAs Nanowires by Ruppert, C, Thunich, S, Abstreiter, G, Fontcuberta i Morral, A, Holleitner, A. W, Betz, M

“…A phase-stable superposition of femtosecond pulses from a compact erbium-doped fiber source and their second harmonic is shown to induce ultrashort ∼μA current…”
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Growth and optoelectronic properties of polymorphous silicon thin films by Roca i Cabarrocas, P., Fontcuberta i Morral, A., Poissant, Y.

“…Polymorphous silicon is a nanostructured thin film consisting of a small fraction of nanocrystalline silicon particles and/or clusters embedded in a relaxed…”
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Gallium arsenide p - i - n radial structures for photovoltaic applications by Colombo, C., Heiβ, M., Grätzel, M., Fontcuberta i Morral, A.

“…Gallium arsenide p - i - n radial junctions were fabricated by molecular beam epitaxy. The current-voltage characteristics of single nanowires were measured in…”
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Self-assembled quantum dots in a nanowire system for quantum photonics by Heiss, M., Fontana, Y., Gustafsson, A., Wüst, G., Magen, C., O’Regan, D. D., Luo, J. W., Ketterer, B., Conesa-Boj, S., Kuhlmann, A. V., Houel, J., Russo-Averchi, E., Morante, J. R., Cantoni, M., Marzari, N., Arbiol, J., Zunger, A., Warburton, R. J., Fontcuberta i Morral, A.

“…Quantum dots embedded within nanowires represent one of the most promising technologies for applications in quantum photonics. Whereas the top-down fabrication…”
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Raman spectroscopy of wurtzite and zinc-blende GaAs nanowires: Polarization dependence, selection rules, and strain effects by Zardo, I., Conesa-Boj, S., Peiro, F., Morante, J. R., Arbiol, J., Uccelli, E., Abstreiter, G., Fontcuberta i Morral, A.

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Plasma-Enhanced Atomic Layer Deposition of Nickel Nanotubes with Low Resistivity and Coherent Magnetization Dynamics for 3D Spintronics by Giordano, M. C, Baumgaertl, K, Escobar Steinvall, S, Gay, J, Vuichard, M, Fontcuberta i Morral, A, Grundler, D

“…We report plasma-enhanced atomic layer deposition (ALD) to prepare conformal nickel thin films and nanotubes using nickelocene as a precursor, water as the…”
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Nucleation mechanism of gallium-assisted molecular beam epitaxy growth of gallium arsenide nanowires by Fontcuberta i Morral, A., Colombo, C., Abstreiter, G., Arbiol, J., Morante, J. R.

“…Molecular beam epitaxy Ga-assisted synthesis of GaAs nanowires is demonstrated. The nucleation and growth are seen to be related to the presence of a Si O 2…”
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