Exploració per autor "Martorell Pena, Jordi"
Ara es mostren els items 11-30 de 45
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Enhanced light harvesting in semitransparent organic solar cells using an optical metal cavity configuration
Pastorelli, Francesco; Romero Gómez, Pablo; Betancur Lopera, Rafael; Martinez Otero, Alberto; Mantilla Perez, Paola; Bonod, Nicolas; Martorell Pena, Jordi (2015-01-21)
Article
Accés obertAn optical metal cavity configuration is used to trap near infrared light in a semitransparent organic solar cell. The efficiency for such cell, which has a higher than 20% transparency in the visible region, is equal to ... -
Enhanced stability in semi-transparent PTB7/PC71BM photovoltaic cells
Romero Gómez, Pablo; Betancur Lopera, Rafael; Martinez Otero, Alberto; Elias Pera, Xavier; Mariano, Marina; Romero, Beatriz; Arredondo, Belen; Vergaz, Ricardo; Martorell Pena, Jordi (2015-06-01)
Article
Accés obertWe studied the performance over time of opaque and semi-transparent PTB7:PC71BM bulk heterojunction solar cells. For unsealed inverted configuration cells we observe that when the isolation from the environment is improved, ... -
Ergodic Light Propagation in a Half-Cylinder Photonic Plate for Optimal Absorption in Perovskite Solar Cells
Martínez-Denegrí Sánchez, Guillermo; Colodrero Perez, Silvia; Liu, Quan; Toudert, Johann; Kozyreff, Gregory; Martorell Pena, Jordi (2019-05-17)
Article
Accés obertIn an optical medium slab, a randomization of the interfaces will lead to an ergodic light propagation, implying a kind of light trapping that sets an upper limit for a broadband absorption enhancement factor. However, in ... -
FONAMENTS DE FÍSICA (Examen final, 1r quadrimestre)
Álvarez Lacalle, Enrique; Rebassa Mansergas, Alberto; Martorell Pena, Jordi (Universitat Politècnica de Catalunya, 2023-01-31)
Examen
Accés restringit a la comunitat UPC -
FONAMENTS DE FÍSICA (Examen parcial, 1r quadrimestre)
Álvarez Lacalle, Enrique; Martorell Pena, Jordi; Rebassa Mansergas, Alberto (Universitat Politècnica de Catalunya, 2022-11-07)
Examen
Accés restringit a la comunitat UPC -
FONAMENTS FISICS DE L'ENGINYERIA 2 (Examen 1r Quadr.)
Martorell Pena, Jordi (Universitat Politècnica de Catalunya, 1997-02-01)
Examen
Accés restringit a la comunitat UPC -
FONAMENTS FISICS DE L'ENGINYERIA 2 (Examen 2n Quadr.)
Martorell Pena, Jordi (Universitat Politècnica de Catalunya, 1996-04-25)
Examen
Accés restringit a la comunitat UPC -
Formamidinium Incorporation into Compact Lead Iodide for Low Band Gap Perovskite Solar Cells with Open-Circuit Voltage Approaching the Radiative Limit
Zhang, Hui; Kramarenko, Mariia; Martínez-Denegrí Sánchez, Guillermo; Osmond, Johann; Martorell Pena, Jordi (2019-03-06)
Article
Accés obertTo bring hybrid lead halide perovskite solar cells toward the Shockley-Queisser limit requires lowering the band gap while simultaneously increasing the open-circuit voltage. This, to some extent divergent objective, may ... -
Four-terminal tandem based on a PM6:L8-BO transparent solar cell and a 7 nm Ag layer intermediate electrode
Bernal Texca, Francisco Gumaro; Martorell Pena, Jordi (John Wiley & sons, 2024-02-13)
Article
Accés obertTo overcome transmission and thermalization losses from single-junction solar cells, the two-terminal tandem cell configuration is one of the most widely followed approaches. Unfortunately, the need to match the current ... -
High-performance polymer solar cells using an optically enhanced architecture
Martinez Otero, Alberto; Elías Castells, Xavier; Betancur, Rafael; Martorell Pena, Jordi (2013-01-31)
Article
Accés restringit per política de l'editorial -
Highly flexible transparent electrodes containing ultrathin silver for efficient polymer solar cells
Ghosh, Dhriti Sundar; Liu, Quansheng; Mantilla Perez, Paola; Chen, T. L.; Mkhitaryan, Vahagn; Huang, Minghuang; Garner, Sean; Martorell Pena, Jordi; Pruneri, Valerio (2015-12-16)
Article
Accés obertTransparent electrodes (TEs) having electrooptical trade-offs better than state-of-the-art indium tin oxide (ITO) are continuously sought as they are essential to enable flexible electronic and optoelectronic devices. In ... -
Inverse Optical Cavity Design for Ultrabroadband Light Absorption Beyond the Conventional Limit in Low-Bandgap Nonfullerene Acceptor–Based Solar Cells
Liu, Quan; Toudert, Johann; Li, Tengfei; Kramarenko, Mariia; Martínez-Denegrí Sánchez, Guillermo; Ciammaruchi, Laura; Zhan, Xiaowei; Martorell Pena, Jordi (2019-05-23)
Article
Accés obertIn the subwavelength regime, several nanophotonic configurations have been proposed to overcome the conventional light trapping or light absorption enhancement limit in solar cells also known as the Yablonovitch limit. It ... -
Light coupling into the Whispering Gallery Modes of a fiber array thin film solar cell for fixed partial Sun tracking
Mariano, Marina; Rodriguez, Francisco J.; Romero Gómez, Pablo; Kozyreff, Gregory; Martorell Pena, Jordi (MACMILLAN PUBLISHERS LIMITED, 2014-05-14)
Article
Accés obertWe propose the use of whispering gallery mode coupling in a novel configuration based on implementing a thin film cell on the backside of an array of parallel fibers. We performed numerical calculations using the parameters ... -
Light harvesting at oblique incidence decoupled from transmission in organic solar cells exhibiting 9.8% efficiency and 50% visible light transparency
Liu, Quan; Gerling Sarabia, Luis Guillermo; Bernal Texca, Francisco Gumaro; Toudert, Johann; Li, Tengfei; Zhan, Xiaowei; Martorell Pena, Jordi (2020-01-01)
Article
Accés obertFor many years, it has been recognized that potential organic photovoltaic cells must be integrated into elements requiring high transparency. In most of such elements, sunlight is likely to be incident at large angles. ... -
Measurement of the dispersion of air and of refractive index anomalies by wavelength- dependent nonlinear interferometry
Macovez, Roberto; Mariano, Marina; Di Finizio, Sergio; Martorell Pena, Jordi (2009-07-27)
Article
Accés obertWe carry out wavelength-dependent second harmonic interference experiments using thin films of an organic dye as nonlinear optical sources. While the measured difference of refractive index between the fundamental and ... -
Molecular conformation in organic films from quantum chemistry ab initio calculations and second harmonic spectroscopy
Macovez, Roberto; López, Núria; Mariano, Marina; Maymó Camós, Marc; Martorell Pena, Jordi (2012-11-30)
Article
Accés restringit per política de l'editorialIdentifying molecular species and conformations at surfaces is of interest for both catalytic and biointerfacial research. Here, we present an extinction and second harmonic spectroscopy study of films of crystal violet ... -
Molecular ¿(2) gratings via electron-beam lithography
Domínguez Juárez, Jorge Luis; Macovez, Roberto; Gonzalez, M.U.; Martorell Pena, Jordi (2010-07)
Article
Accés restringit per política de l'editorialWe show that the nonlinear optical activity of an organic molecule may be quenched by electron irradiation. Exploiting this effect, we inscribe periodic χ(2) patterns in the molecular films by means of a scanning electron ... -
Monitoring degradation mechanisms in PTB7:PC71BM photovoltaic cells by means of impedance spectroscopy
Arredondo, Belen; Martin Lopez, Maria B.; Romero, Beatriz; Vergaz, Ricardo; Romero Gómez, Pablo; Martorell Pena, Jordi (2015-10-23)
Article
Accés obertWe have used impedance spectroscopy technique to monitor degradation mechanisms in organic solar cells based on a blend of PTB7:PC71BM. We have measured the impedance of the cell on a periodical basis for almost four months, ... -
Monolithic CIGS-Perovskite tandem cell for optimal light harvesting without current matching
Mantilla Perez, Paola; Correa Baena, Juan Pablo; Liu, Quan; Colodrero, Silvia; Toudert, Johann; Saliba, Michale; Hagfeldt, Anders; Martorell Pena, Jordi (2017-03-22)
Article
Accés obertWe present a novel monolithic architecture for optimal light harvesting in multijunction thin film solar cells. In the configuration we consider, formed by a perovskite (PVK) cell overlying a CIGS cell, the current extracted ... -
Nanoparticle assisted mechanical delamination for freestanding high performance organic devices
Colodrero, Silvia; Romero Gómez, Pablo; Mantilla Perez, Paola; Martorell Pena, Jordi (2017-01-12)
Article
Accés obertOrganic electronics has the potential to be incorporated in any kind of surface morphology for wearable or fully portable applications. Unfortunately when organic devices, such as solar cells, are fabricated on flexible ...