Exploració per autor "Alcubilla González, Ramón"
Ara es mostren els items 104-123 de 200
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Larger absolute photonic bandgap in two-dimensional air-silicon structures
(2003-05)
Article
Accés restringit per política de l'editorialWe investigate different aspects of the absolute photonic band gap (PBG) formation for two-dimensional photonic crystals, consisting of air rods drilled into silicon. Specifically, square lattices of square and circular ... -
Laser contact through electrosprayed alumina inverse opals on silicon
(2015-02-18)
Article
Accés obertIn crystalline silicon (c-Si) solar cell field, an intensive effort is being paid to reduce the quantity of silicon material used in each cell in order to minimize its costs. With the reduction of wafer thickness, light ... -
Laser fired contacts applied to the rear surface of heterojunction silicon solar cells
(2011-11)
Article
Accés restringit per política de l'editorialIn this work, we fabricate heterojunction silicon solar cells on p-type substrates whose rear surface configuration is based on dielectric passivation and laser fired contacts (LFC cells). This is an alternative to boron-doped ... -
Laser fired contacts on amorphous silicon deposited by hot-wire cvd on crystalline silicon
(WIP Wirtschaft und Infrastruktur GmbH & Co. Planungs-KG, 2008)
Text en actes de congrés
Accés restringit per política de l'editorialIn this work we study aluminium laser-fired contacts for intrinsic amorphous silicon layers deposited by Hot-Wire CVD. This structure could be used as an alternative low temperature back contact for rear passivated ... -
Laser Induced Forward Transfer for front contact improvement in silicon heterojunction solar cells
(2015-05-01)
Article
Accés obertIn this work the Laser Induced Forward Transfer (LIFT) technique is investigated to create n-doped regions on p-type c-Si substrates. The precursor source of LIFT consisted in a phosphorous-do ... -
Laser processes for contact optimization in c-Si solar cells
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialSolid State Lasers (SSL) have been used in microelectronic and photovoltaic (PV) industry for decades but, currently, laser technology appears as a key enabling technology to improve efficiency and to reduce production ... -
Laser processing of Al2O3/a-SiCx:H stacks: a feasible solution for the rear surface of high-efficiency p-type c-Si solar cells
(2012-04-26)
Article
Accés restringit per política de l'editorialWe explore the potential of laser processing aluminium oxide (Al2O3)/amorphous silicon carbide (a-SiCx:H) stacks to be used at the rear surface of p-type crystalline silicon (c-Si) solar cells. For this stack, excellent ... -
Laser-fired contact optimization in c-Si solar cells
(2011-04-15)
Article
Accés restringit per política de l'editorialIn this work we study the optimization of laser-fired contact (LFC) processing parameters, namely laser power and number of pulses, based on the electrical resistance measurement of an aluminum single LFC point. LFC process ... -
Long-term stability of Al2O3 passivated black silicon
(Elsevier, 2016)
Comunicació de congrés
Accés restringit per política de l'editorialIn this work we report on the long-term stability of black silicon surfaces passivated with atomic layer deposited (ALD) 20 nm thick Al2O3 films on p- and n-type FZ c-Si substrates. The results are directly compared with ... -
Low recombination n+ regions created by n+ c-Si epitaxial layers and laser processing of phosphorus-doped SiCx films
(2012)
Text en actes de congrés
Accés restringit per política de l'editorial -
Low surface recombination in silicon-heterojunction solar cells with rear laser-fired contacts from aluminum foils
(2015-05-01)
Article
Accés obertIn this study, an approach to create laser-fired contacts from aluminum foils is studied on p-type silicon-heterojunction solar cells. This alternative approach consists of the use of aluminum foils instead of evaporated ... -
Low temperature back-surface-field contacts deposited by hot-wire CVD for heterojunction solar cells
(2008-08)
Article
Accés obertThe growing interest in using thinner wafers (< 200 µm) requires the development of low temperature passivation strategies for the back contact of heterojunction solar cells. In this work, we investigate low temperature ... -
Low-cost high-sensitive suns-Voc measurement instrument to characterize c-Si solar cells
(2020-09-01)
Article
Accés obertMeasuring open-circuit voltage (Voc) vs. light intensity (Suns) in solar cells permits the access of cell performance without the series resistance effect. This work shows the implementation of a Suns-Voc measurement system ... -
Macroporous silicon : a next generation catalytic monolith for ethanol steam reforming
(Publicacions de la Universitat de València (PUV), 2011)
Text en actes de congrés
Accés restringit per política de l'editorialMacroporous silicon membranes, consisting of straight parallel pores with a diameter of 3.3μm and depth/width ratio >60, are used as microreactors for high efficiency hydrogen generation via steam reforming of ethanol. The ... -
Macroporous silicon: a versatile material for 3D structure fabrication
(2008-02)
Article
Accés restringit per política de l'editorialThis work focuses on the fabrication of three-dimensional (3D) microstructures by electrochemical etching of n-type silicon. We exploit the possibility of modulating the pore diameter along the growing direction to produce ... -
Mechanical properties of Al2O3 inverse opals by means of nanoindentation
(2016)
Article
Accés obertIn order to understand the mechanical behaviour of Al2O3 inverse opals, nanoindentation techniques have been implemented in material layers with three different microstructures, in terms of hollow or polystyrene spheres, ... -
Microcrystalline silicon thin film transistors obtained by hot-wire CVD
(1999-12)
Article
Accés restringit per política de l'editorialPolysilicon thin film transistors (TFT) are of great interest in the field of large area microelectronics, especially because of their application as active elements in flat panel displays. Different deposition techniques ... -
Microscale characterization of surface recombination at the vicinity of laser-processed regions in c-Si solar cells
(2016-03-01)
Article
Accés obertLaser firing processes have emerged as a technologically feasible approach for the fabrication of local point contacts or local doped regions in advanced high-efficiency crystalline-Si (c-Si) solar cells. In this work, we ... -
Microscale spatially resolved characterization of highly doped regions in laser-fired contacts for high-efficiency crystalline Si solar cells
(2015-03-01)
Article
Accés obertLaser-fired contact (LFC) processes have emerged as a promising approach to create rear local electric contacts in p-type crystalline silicon solar cells. Although this approach has been successfully applied in devices ... -
Mid-IR characterization of photonic bands in 2D photonic crystals on silicon
(2008-09-30)
Article
Accés restringit per política de l'editorialWe report the characterization of two-dimensional silicon photonic crystals using angular-dependent reflectivity in the mid-IR. The photonic crystals are obtained by electrochemical etching of an ordered array of holes ...
