Exploració per autor "Garin Escriva, Moises"
Ara es mostren els items 24-36 de 36
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Silicon microcavity-based photovoltaic cells for IR harvesting
(2014-05-22)
Article
Accés obertPhotovoltaic cells on silicon spherical microcavities trap IR light, increasing the probability of photon absorption and enhancing the efficiency of solar energy devices. -
“Silicon millefeuille” : From a silicon wafer to multiple thin crystalline films in a single step
(2013-04-29)
Article
Accés obertDuring the last years, many techniques have been developed to obtain thin crystalline films from commercial silicon ingots. Large market applications are foreseen in the photovoltaic field, where important cost reductions ... -
Silicon nanocavities: Optical properties and applications
(2014)
Text en actes de congrés
Accés obertSilicon is the key enabling material for advanced technologies in electronics, and photonics. Recently, we have developed silicon nanocavities (SNs) [1,2] with particle size between 300 nm and 3000 nm. Silicon has an ... -
Single-Step multiple-layers wafer slicing from macroporous silicon
(2013)
Text en actes de congrés
Accés obertThere is a rising interest, from both photovoltaics and microelectronics industry, in wafer thickness reduction. During the last decade, it has been steadily reduced from 350 µm to 180 µm, but benefits are foreseen for ... -
Spherical silicon photonic microcavities : From amorphous to polycrystalline
(2016-06-16)
Article
Accés obertShaping silicon as a spherical object is not an obvious task, especially when the object size is in the micrometer range. This has the important consequence of transforming bare silicon material in a microcavity, so it is ... -
Strategies for high fill factor and open-circuit voltage in low-doped c-Ge TPV cells with partially contacted surfaces using 3D simulations
(2023)
Comunicació de congrés
Accés obertDielectric passivated surfaces provide excellent surface recombination properties while point-like contacts are defined to locally extract the current. In this solution, the distance between contacts, or pitch, is critical ... -
Template fabrication of 3D metallic microstructures by electrochemical etching and electroplanting
(2010)
Text en actes de congrés
Accés obertIn this work, we show that macroporous silicon consisting of periodic arrays of etched pores is a feasible alternative for synthesis of 2D and 3d metallic microstructures due to its flexibility in the definition of complex ... -
Textured PDMS films applied to thin crystalline silicon solar cells
(2019-12-18)
Article
Accés obertFront surface texturization is a standard procedure used to improve optical properties of photovoltaic devices. In some particular cases, such as when dealing with ultrathin substrates, common texturization techniques can ... -
The effect of absorption losses on the optical behaviour of macroporous silicon photonic crystal selective filters
(2016-02-15)
Article
Accés obertThe effect of losses in photonic crystal structures on transmittance and reflectance has been studied by numerical techniques, and compared to fabricated macroporous silicon samples. Material absorption and tolerances of ... -
Thermal emission of macroporous silicon chirped photonic crystals
(2010-09-15)
Article
Accés obert -
Three-dimensional metallo-dielectric selective thermal emitters with high-temperature stability for thermophotovoltaic applications
(2015-03-01)
Article
Accés obertSelective thermal emitters concentrate most of their spontaneous emission in a spectral band much narrower than a blackbody. When used in a thermophovoltaic energy conversion system, they become key elements defining both ... -
Tuning the emissivity of 3D macroporous silicon in the mid-infrared
(2010)
Text en actes de congrés
Accés obertTailoring the thermal emission of a particular material by using periodic micro-structures has attracted great interest for its potential applications in heating and lighting systems or thermophotovoltaics. […] Metallic ... -
Tuning the shape of macroporous silicon
(2007-10)
Article
Accés restringit per política de l'editorialMacroporous silicon membranes, prepared by photo-electrochemical etching, were subjected to pore widening performed by multiple oxidation/oxide-stripping cycles. We study the dependence of pore cross section and diameter ...
