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  • Células y módulos de alta eficiencia basadas en el silicio negro y técnicas de eliminación de defectos

     Martin Garcia, Isidro; Ortega Villasclaras, Pablo Rafael; Alcubilla Gonzalez, Ramon
    Competitive project

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  • Grup de Recerca en Micro i Nanotecnologies (MNT)

     Alcubilla Gonzalez, Ramon; Puigdollers Gonzalez, Joaquin; Voz Sanchez, Cristobal; Rodriguez Martinez, Angel; Martin Garcia, Isidro; Bardes Llorensi, Daniel; Bermejo Broto, Alexandra; Calderer Cardona, Josep; Dominguez Pumar, Manuel M.; Prat Viñas, Luis; Garcies Salva, Pau; Jimenez Serres, Vicente; Lopez Gonzalez, Juan Miguel; Orpella Garcia, Alberto; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Silvestre Berges, Santiago; Garin Escriva, Moises; Colina Brito, Monica Alejandra; Morales Vilches, Ana Belen; Coll Valenti, Arnau; Lopez Rodriguez, Gema; Castañer Muñoz, Luis Maria
    Competitive project

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  • Células solares de silicio de alta eficiencia y bajo coste fabricadas a baja temperatura

     Lopez Gonzalez, Juan Miguel; Colina Brito, Monica Alejandra; Ortega Villasclaras, Pablo Rafael; Voz Sanchez, Cristobal
    Competitive project

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  • Photovoltaic and fuel cells in power MEMS for smart energy management

     García, Juan; Delgado, Francisco; Ortega Villasclaras, Pablo Rafael; Bermejo Broto, Alexandra
    Date of publication: 2014-01-01
    Book chapter

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  • HIGH EFFICIENCY REAR CONTACT SOLAR CELLS AND ULTRA POWERFUL MODULES

     Alcubilla Gonzalez, Ramon; Ortega Villasclaras, Pablo Rafael; Lopez Gonzalez, Juan Miguel; Colina Brito, Monica Alejandra; Lopez Rodriguez, Gema; Martin Garcia, Isidro
    Competitive project

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  • 3D simulations of back-contact back-junction c-Si(P) solar cells with doped point contacts

     Carrió Díaz, David; Ortega Villasclaras, Pablo Rafael; López Martí, Gema; Lopez Gonzalez, Juan Miguel; Martin Garcia, Isidro; Voz Sanchez, Cristobal; Alcubilla Gonzalez, Ramon
    European Photovoltaic Solar Energy Conference and Exhibition
    p. 1607-1610
    DOI: 10.4229/28thEUPVSEC2013-2CV.3.44
    Presentation's date: 2013-10-02
    Presentation of work at congresses

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    The back-contact back-junction BC-BJ solar cell concept is a promising photovoltaic structure for both laboratory and industrial c-Si solar cells. High efficiency devices based on this concept have been reported in the past using either diffused regions or applying the heterojunction with intrinsic thin layer HIT concept to perform both base and emitter contacts. In this work we use 3D numerical simulations to study the impact of technological parameters on device performance of c-Si(p) BC-BJ solar cells with point-like doped contacts. Numerical simulations allow us to optimize rear contact geometry as a trade-off between recombination and base resistive losses, leading to photovoltaic efficiencies higher than 18.3% and up to 22.3% on 2.2 ¿cm FZ substrates depending on the back contact pattern and the passivation quality of base contacts.

    The back-contact back-junction BC-BJ solar cell concept is a promising photovoltaic structure for both laboratory and industrial c-Si solar cells. High efficiency devices based on this concept have been reported in the past using either diffused regions or applying the heterojunction with intrinsic thin layer HIT concept to perform both base and emitter contacts. In this work we use 3D numerical simulations to study the impact of technological parameters on device performance of c-Si(p) BC-BJ solar cells with point-like doped contacts. Numerical simulations allow us to optimize rear contact geometry as a trade-off between recombination and base resistive losses, leading to photovoltaic efficiencies higher than 18.3% and up to 22.3% on 2.2 cm FZ substrates depending on the back contact pattern and the passivation quality of base contacts.

  • Impact of metallization techniques of surface passivation of high efficiency crystalline silicon solar cells

     Coll Valenti, Arnau; Martin Garcia, Isidro; Ortega Villasclaras, Pablo Rafael; Bermejo Broto, Alexandra; López Martí, Gema; Alcubilla Gonzalez, Ramon
    European Photovoltaic Solar Energy Conference and Exhibition
    p. 1213-1216
    DOI: 10.4229/28thEUPVSEC2013-2BV.2.1
    Presentation's date: 2013-10-02
    Presentation of work at congresses

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    Most of the high-efficiency c-Si solar cells are based on dielectric films that electrically passivate c-Si surface and must keep their passivation properties after metal deposition on top of them. This work studies the impact of three different aluminum Physical Vapor Deposition (PVD) methods (thermal, e-beam, sputtering) on the c-Si surface passivation provided by SiO2 and Al2O3 films. Effective surface recombination velocity is measured before and after metal deposition. Results show that e-beam and sputtering techniques degrade surface passivation while thermal evaporation has no impact. Surface passivation can be recovered and even improved by means of an annealing with the aluminum film on top of the dielectric leading to the so-called alnealing. Additionally, after this alnealing Capacitance-Voltage measurements and lifetime spectroscopy analysis suggest a strong dependence of fixed charge density for SiO2 films on the metal deposition technique that helps in c-Si surface passivation.

  • Silicon heterjunction for advanced rear contact cells: main results of the SHARCC project

     Desrues, T.; Martin Garcia, Isidro; de Vecchi, S.; Abolmasov, S.; Diouf, D.; Lukyanov, A.; Ortega Villasclaras, Pablo Rafael; Colina Brito, Monica Alejandra; Versavel, M.; Tuseau, M.; Souche, F.; Nychyporuk, T.; Gueunier-Farret, M.; Muñoz, D.; Lemiti, M.; Kleider, J.P.; Cabarrocas, P. Roca; Alcubilla Gonzalez, Ramon; Schlumberger, Y.; Ribeyron, P.J.
    European Photovoltaic Solar Energy Conference and Exhibition
    p. 1135-1138
    DOI: 10.4229/28thEUPVSEC2013-2BV.1.32
    Presentation's date: 2013-09-30
    Presentation of work at congresses

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    This paper presents the main results of a research project called SHARCC, focused on rear contacted silicon heterojunction solar cells. Within this project, funded by the French National Research Agency (ANR), different tasks were shared by the partners taking into account their specific skills. This project led to efficiencies about 19% on innovative cell structures obtained with an industrial process based on laser ablation. Keywords: silicon heterojunction, back contact

    This paper presents the main results of a research project called SHARCC, focused on rear contacted silicon heterojunction solar cells. Within this project, funded by the French National Research Agency (ANR), different tasks were shared by the partners taking into account their specific skills. This project led to efficiencies about 19% on innovative cell structures obtained with an industrial process based on laser ablation.

  • High voltage ultrathin-photovoltaic minimodules: fabrication technology and application to bioimplantable telesupplying

     Bermejo Broto, Alexandra; Silvestre Berges, Santiago; Ortega Villasclaras, Pablo Rafael
    International Conference on Micro and Nano Engineering
    p. 459
    Presentation's date: 2013-09-17
    Presentation of work at congresses

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  • Surface passivation and optical characterization of Al2O3/a-SiCx stacks on c-Si substrates

     López Martí, Gema; Ortega Villasclaras, Pablo Rafael; Voz Sanchez, Cristobal; Martin Garcia, Isidro; Colina Brito, Monica Alejandra; Morales Vilches, Ana Belen; Orpella Garcia, Alberto; Alcubilla Gonzalez, Ramon
    E-MRS Spring Meeting
    p. 1
    Presentation's date: 2013-05-27
    Presentation of work at congresses

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  • Optimization of laser micro-doping processes for silicon photovoltaic applications

     Colina Brito, Monica Alejandra; Martin Garcia, Isidro; Voz Sanchez, Cristobal; Morales Vilches, Ana Belen; Ortega Villasclaras, Pablo Rafael; López Martí, Gema; Garcia Molina, Francisco Miguel; Orpella Garcia, Alberto; Muñoz Martín, D.; Sánchez Aniorte, M. Isabel; Molpeceres Alvarez, Carlos; Alcubilla Gonzalez, Ramon
    E-MRS Spring Meeting
    p. D.PI. 31
    Presentation's date: 2013-05-27
    Presentation of work at congresses

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  • Recovery of indium-tin-oxide/silicon heterojunction solar cells by thermal annealing

     Morales Vilches, Ana Belen; Voz Sanchez, Cristobal; Colina Brito, Monica Alejandra; López Martí, Gema; Martin Garcia, Isidro; Ortega Villasclaras, Pablo Rafael; Orpella Garcia, Alberto; Alcubilla Gonzalez, Ramon
    E-MRS Spring Meeting
    p. D.PI. 20
    Presentation's date: 2013-05-27
    Presentation of work at congresses

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  • SENSOSOL: MultiFOV 4-Quadrant high precision sun sensor for satellite attitude control

     Delgado, Francisco J.; Quero Reboul, Jose Manuel; Garcia Ortega, Juan; López Tarrida, Cristina; Moreno, José M.; Sáez, Agustín G.; Ortega Villasclaras, Pablo Rafael
    Spanish Conference on Electron Devices
    p. 1-4
    DOI: 10.1109/CDE.2013.6481358
    Presentation's date: 2013-02-13
    Presentation of work at congresses

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    The design, manufacturing and calibration of an improved miniaturized two axis sun sensor for satellite attitude control will be shown. The high precision is obtained by the subdivision of the field of view (FOV). The FOV and the resolution obtained are ±60° and 0.5° for the coarse measure and ±6° with precision better than 0.05° for the fine measure.

  • An IBC solar cell for the UPC CubeSat-1 mission

     Ortega Villasclaras, Pablo Rafael; Jove Casulleras, Roger; Pedret, A; Gonzalvez, G.; Lopez Rodriguez, Gema; Martin Garcia, Isidro; Dominguez Pumar, Manuel M.; Alcubilla Gonzalez, Ramon; Camps Carmona, Adriano Jose
    Spanish Conference on Electron Devices
    p. 333-336
    DOI: 10.1109/CDE.2013.6481410
    Presentation's date: 2013-02
    Presentation of work at congresses

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    In this work the fabrication and electrical characterization of interdigitated back contact IBC solar cells is shown. These solar cells have been specifically designed for a CubeSat based satellite under developement at the Universitat Politecnica de Catalunya (UPC). Solar cells incorporate a transparent cover-glass as an extraterrestrial radiation shield. Front surface passivation was achieved using an Al2O3 layer exhibiting surface recombination velocities 100 cmls at the final device. Measurements confirm photovoltaic efficiencies n's-12%, with open circuit voltages Voc's 650 m V and short circuit current densities Jsc's 25 mA/cm 2. A module with 11 IBC solar cells interconnected in series will be integrated in one of the faces of the satellite forming part of the power subsystem. Preliminary results confirm the good electrical performance of the module.

    In this work the fabrication and electrical characterization of interdigitated back contact IBC solar cells is shown. These solar cells have been specifically designed for a CubeSat based satellite under developement at the Universitat Politecnica de Catalunya (UPC). Solar cells incorporate a transparent cover-glass as an extraterrestrial radiation shield. Front surface passivation was achieved using an Al2O3 layer exhibiting surface recombination velocities <; 100 cmls at the final device. Measurements confirm photovoltaic efficiencies η's-12%, with open circuit voltages Voc's ~650 m V and short circuit current densities Jsc's ~25 mA/cm2. A module with 11 IBC solar cells interconnected in series will be integrated in one of the faces of the satellite forming part of the power subsystem. Preliminary results confirm the good electrical performance of the module.

  • Boron diffused emitters passivated with Al2O3 films

     Masmitja Rusinyol, Gerard; Ortega Villasclaras, Pablo Rafael; Lopez Rodriguez, Gema; Calle Martin, Eric; Garcia Molina, Francisco Miguel; Martin Garcia, Isidro; Orpella Garcia, Alberto; Voz Sanchez, Cristobal; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 329-332
    DOI: 10.1109/CDE.2013.6481409
    Presentation's date: 2013
    Presentation of work at congresses

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    In this work we study the fabrication and characterization of boron diffused emitters using FZ c-Si(n) substrates. Emitter surface was passivated with Al2O3(25 nm thick) layers deposited by thermal atomic layer deposition ALD technique. This study covers a broad emitter sheet resistance Rsh range from 20 to 250 O/sq using both polished and textured wafers. Emitter electrical quality was tested by means of lifetime measurements using quasi-stationary photoconductance QSS-PC method. Dark saturation emitter current densities Joe's were extracted from lifetime measurements resulting in Joe's values ranging from 10 to 150 fA/cm2 depending on Rsh. These results are in the-state-of-the-art in boron emitter passivation.

    In this work we study the fabrication and characterization of boron diffused emitters using FZ c-Si(n) substrates. Emitter surface was passivated with Al2O3(25 nm thick) layers deposited by thermal atomic layer deposition ALD technique. This study covers a broad emitter sheet resistance Rsh range from 20 to 250 Ω/sq using both polished and textured wafers. Emitter electrical quality was tested by means of lifetime measurements using quasi-stationary photoconductance QSS-PC method. Dark saturation emitter current densities Joe's were extracted from lifetime measurements resulting in Joe's values ranging from 10 to 150 fA/cm2 depending on Rsh. These results are in the-state-of-the-art in boron emitter passivation.

  • 27th EU PVSEC Poster Award

     Colina Brito, Monica Alejandra; Voz Sanchez, Cristobal; Martin Garcia, Isidro; Alcubilla Gonzalez, Ramon; Ortega Villasclaras, Pablo Rafael; Lopez Rodriguez, Gema; Morales Vilches, Ana Belen; Sánchez Aniorte, M. Isabel; Molpeceres Alvarez, Carlos
    Award or recognition

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  • Optimization of laser doping processes for the creation of p+ regions from solid dopant sources

     Colina Brito, Monica Alejandra; Martin Garcia, Isidro; Voz Sanchez, Cristobal; Morales Vilches, Ana Belen; Ortega Villasclaras, Pablo Rafael; Lopez Rodriguez, Gema; Orpella Garcia, Alberto; Alcubilla Gonzalez, Ramon; Sánchez Aniorte, M. Isabel; Molpeceres Alvarez, Carlos
    European Photovoltaic Solar Energy Conference and Exhibition
    p. 1885-1889
    Presentation's date: 2012-09
    Presentation of work at congresses

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  • Optimization of al2o3 films obtained by ald to passivate p-type c-silicon wafers

     Lopez Rodriguez, Gema; Ortega Villasclaras, Pablo Rafael; Martin Garcia, Isidro; Colina Brito, Monica Alejandra; Orpella Garcia, Alberto; Alcubilla Gonzalez, Ramon
    European Photovoltaic Solar Energy Conference and Exhibition
    p. 1692-1695
    Presentation's date: 2012-09
    Presentation of work at congresses

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  • Influence of laser wavelength on laser-fired contacts for crystalline silicon solar cells

     Sanchez Aniorte, Maria Isabel; Muñoz Martín, D.; Morales Furio, Miguel; Ortega Villasclaras, Pablo Rafael; Martin Garcia, Isidro; Colina Brito, Monica Alejandra; Alcubilla Gonzalez, Ramon; Molpeceres Alvarez, Carlos
    European Photovoltaic Solar Energy Conference and Exhibition
    p. 1688-1691
    Presentation's date: 2012-09
    Presentation of work at congresses

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  • Influence of wavelength on laser doping and laser-fired contact processes for c-Si solar cells

     Molpeceres Alvarez, Carlos; Sanchez Aniorte, Maria Isabel; Morales Furio, Miguel; Muñoz, David; Martin Garcia, Isidro; Ortega Villasclaras, Pablo Rafael; Colina Brito, Monica Alejandra; Voz Sanchez, Cristobal; Alcubilla Gonzalez, Ramon
    SPIE Optics+Photonics
    p. 847308-1-847308-11
    DOI: doi: 10.1117/12.929456
    Presentation's date: 2012-08-15
    Presentation of work at congresses

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    This work investigates the influence of the laser wavelength on laser doping (LD) and laser - fired contact (LFC) formation in solar cell structures . We compare the results obtained using the three first harmonics (corresponding to wavelengths of 1064 nm, 532 nm and 355 nm) of fully commercial solid state laser sources with pulse width in the ns range. The discussion is based on the impact on the morphology and electrical characteristics of test structures. In the case of LFC the study includes th e influence of different passivation layers and the assessment of the process quality through electrical resistance measurements of an alumin i um single LFC point for the different wavelengths. Values for the normalized LFC resistance far below 1 .0 m Ω cm 2 have been obtained, with better results at s horter wavelen g ths. To assess the influence of the laser wavelength on LD we have created n+ regions into p - type c - Si wafers , using a dry LD approach to define punctual emitters. J - V characteristics show exponen tial trends at mid - injection for a broad parametric window in all wavelengths, with local ideality factors well below 1.5. In bot h processes the best results have been obtained using green (532 nm) and , specially, UV (355 nm) . This indicates that to minim ize the thermal damage in the material is a clear requisite to obtain th e best electrical performance, thus indicating that UV laser shows better potential to be used in high efficiency solar cells.

  • Access to the full text
    Crystalline silicon solar cells beyond 20% efficiency  Open access

     Ortega Villasclaras, Pablo Rafael; Lopez Rodriguez, Gema; Orpella Garcia, Alberto; Colina Brito, Monica Alejandra; Martin Garcia, Isidro; Voz Sanchez, Cristobal; Bermejo Broto, Alexandra; Puigdollers Gonzalez, Joaquin; Garcia Molina, Miguel; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 1-4
    Presentation's date: 2011-02-08
    Presentation of work at congresses

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    —This paper describes a fabrication process to obtain high efficiency c-Si cells (> 20%) based on the Laser Fired Contact Passivated Emitter Rear Cell (LFC-PERC) concept. Photovoltaic efficiencies beyond 20% have been achieved using thermal SiO2 as a rear passivation layer on 2 cm x 2 cm solar cells with 0.45 cm Fz c-Si substrates. Efficiencies up to 22% are expected for material resistivities in the 0.4–5 cm using an optimized rear contact grid

  • Optimization of the rear point contact scheme of crystalline silicon solar cells using laser-fired contacts

     Ortega Villasclaras, Pablo Rafael; Orpella Garcia, Alberto; López, Gema; Martin Garcia, Isidro; Voz Sanchez, Cristobal; Alcubilla Gonzalez, Ramon; Colina Brito, Monica Alejandra; Sánchez Aniorte, M. Isabel; Perales, Francisco; Molpeceres Alvarez, Carlos
    European Photovoltaic Solar Energy Conference and Exhibition
    p. 2126-2129
    DOI: ISBN 3-936338-26-4
    Presentation's date: 2010-09-06
    Presentation of work at congresses

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    This paper is focused on the optimization of the rear contact scheme of p-type c-Si LFC-PERC high efficiency solar cells minimizing base ohmic losses without jeopardize rear passivation. This is carried out optimizing on one hand the LFC laser conditions for minimum point resistance and on the other hand through a proper design of the contact grid layout finding the optimum trade off for a given base resistivity between rear passivation and base resistance. LFC process was carried out through 110 nm thermal SiO2 passivation layer using IR and green lasers. Very low specific contact resistances, 0.1 mcm2 have been achieved independently of the laser used. For optimum rear contacted area fraction efficiencies over 21.5% and 22%, for IR and green lasers respectively are expected in the 0.5-5 cm resistivity range.

  • INNDISOL

     Alcubilla Gonzalez, Ramon; Martin Garcia, Isidro; Ortega Villasclaras, Pablo Rafael; Orpella Garcia, Alberto; Puigdollers Gonzalez, Joaquin; Voz Sanchez, Cristobal
    Competitive project

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  • A new design of high precision solar microsensor for satellite aplications

     Delgado, Francisco J.; Ortega Villasclaras, Pablo Rafael; Lopez Tarrida, Cristina; Garcia Ortega, Juan; Angulo, Manuel; Quero Reboul, Jose Manuel
    Annual IEEE Conference on Sensors
    p. 552-556
    DOI: 10.1109/ICSENS.2010.5690486
    Presentation's date: 2010-04-01
    Presentation of work at congresses

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    This paper shows the design and calibration of an improved miniaturized two-axis sun sensor for satellite attitude control. The proposed new structure is based on a previous sun sensor structure by adding multiple sensing cells. The improvement in precision is obtained by the subdivision of field of view (FoV), which is expected to be ±60°, with a resolution of 0.1°. In the paper, both the mathematical model and the experimental results are presented. The resulting device will be incorporated in Microsat satellite from INTA, which will be launched in 2012.

  • Nanophotonics for Energy Efficiency

     Voz Sanchez, Cristobal; Ortega Villasclaras, Pablo Rafael; Martin Garcia, Isidro; Orpella Garcia, Alberto; Puigdollers Gonzalez, Joaquin; Bermejo Broto, Alexandra; Alcubilla Gonzalez, Ramon
    Competitive project

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  • DESARROLLO DE UN MICROSENSOR SOLAR DE ALTA PRECISIÓN uFINE-SENSOR PARA EL SATÉLITE INTAuSAT

     Bermejo Broto, Alexandra; Ortega Villasclaras, Pablo Rafael
    Competitive project

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  • Comparison of bulk micromachined high voltage light scavenger

     Bermejo Broto, Alexandra; Ortega Villasclaras, Pablo Rafael; Castañer Muñoz, Luis Maria
    Spanish Conference on Electron Devices
    p. 91-93
    Presentation's date: 2009-02
    Presentation of work at congresses

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  • Advances in a baseline process towards high efficiency c-Si solar cell fabrication

     Ortega Villasclaras, Pablo Rafael; Lopez, G.; Martin Garcia, Isidro; Bermejo Broto, Alexandra; Blanqué, Servane; Garcia Molina, Miguel; Orpella Garcia, Alberto; Voz Sanchez, Cristobal; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 349-352
    Presentation's date: 2009-02-12
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  • Determination of the Density of States in N-type organic Thin-Film Transistors

     Puigdollers Gonzalez, Joaquin; Ortega Villasclaras, Pablo Rafael; Voz Sanchez, Cristobal; Alcubilla Gonzalez, Ramon
    International Thin Film Transistor Conference
    p. 117-120
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  • MEMS solar sensor testing for satellite applications

     García Ortega, J.; Tarrida, C. L.; Quero, J.M.; Delgado, F.J.; Ortega Villasclaras, Pablo Rafael; Castañer Muñoz, Luis Maria; Reina, M.; Angulo, M.; Morilla, Y.; García López, J.
    Spanish Conference on Electron Devices
    p. 345-348
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  • Access to the full text
    c-Si photovoltaic arrays  Open access

     Bermejo Broto, Alexandra; Ortega Villasclaras, Pablo Rafael; Castañer Muñoz, Luis Maria
    Anual Meeting of the IEEE Photonics Society
    p. 119-120
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    Crystalline silicon small photovoltaic arrays are shown. Electrical isolation of individual cells and series connection between them to integrate series arrays are discussed. High open circuit voltage values in the range of 100 V and power densities of 7.2 mW/cm2 have been achieved.

  • Density of bandGap states in pentacene measured from the temperature dependence of thin-film transistors

     Puigdollers Gonzalez, Joaquin; Albert, Marsal; Voz Sanchez, Cristobal; Ortega Villasclaras, Pablo Rafael; Alcubilla Gonzalez, Ramon
    International Symposium on Flexible Electronics
    p. 8
    Presentation's date: 2008-04-07
    Presentation of work at congresses

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  • Claves científicas para el desarrollo de dispositivos fotovoltaicos avanzados de silicio en lámina delgada comerciales (CLASICO)

     Calderer Cardona, Josep; Voz Sanchez, Cristobal; Bermejo Broto, Alexandra; Ortega Villasclaras, Pablo Rafael
    Competitive project

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  • Photovoltaic Mini-modules Using Silicon on Insulator Technology

     Ortega Villasclaras, Pablo Rafael; Bermejo Broto, Alexandra; Castañer Muñoz, Luis Maria
    Spanish Conference on Electron Devices
    p. 289-292
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  • c-Si surface passivation for photovoltaic applications by means of antireflective amorphous silicon carbide layers

     Ferre Tomas, Rafel; Martin Garcia, Isidro; Ortega Villasclaras, Pablo Rafael; Vetter, Michael; Garin Escriva, Moises; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 238-241
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  • Post-etching shaping of macroporous silicon

     Todorov Trifonov, Trifon; Garin Escriva, Moises; Ortega Villasclaras, Pablo Rafael; Marsal, L F; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon
    SPIE Europe MICROTECHNOLOGIES FOR THE NEW MILLENNIUM 2007
    p. 51
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  • Técnicas de excitación y control de dispositivos MEMS para aumentar la fiabilidad y reducir el consumo de potencia

     Castañer Muñoz, Luis Maria; Pons Nin, Joan; Ortega Villasclaras, Pablo Rafael; Bermejo Broto, Alexandra; Molinero Giles, David
    Date: 2006-11
    Report

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  • Investigation of the surface passivation of p+ type Si emitters by PECVD Silicon Carbide films

     Vetter, Michael; Ferre Tomas, Rafel; Martin Garcia, Isidro; Ortega Villasclaras, Pablo Rafael; Alcubilla Gonzalez, Ramon; Petres, R; Libal, J; Kopecek, R
    WCPEC - 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion
    p. 1271-1274
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  • INJECTION-DEPENDENT LIFTIME SPECTROSCOPY AND PC-1D SIMULATIONS OF PHOSPHORUS EMITTERS DOPED WITH SOLID DIFFUSION SOURCES

     Ortega Villasclaras, Pablo Rafael
    20th European Photovoltaic Solar Energy Conference and Exhibition
    Presentation's date: 2005-06-06
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  • Effective lifetime measurements on phosphorous emitters prepared with planar difusión sources

     Ortega Villasclaras, Pablo Rafael; Vetter, Michael; Torres, I; Bermejo Broto, Alexandra; Alcubilla Gonzalez, Ramon
    Spanish Conference on Electron Devices
    p. 1-4
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  • N- Type multicrystalline silicon solar cells: BBr3 diffusion and passivaion of P+ diffused Silicon surfaces

     Libal, J; Petres, R; Buck, T; Kopecek, R; Hahn, G; Ferre Tomas, Rafel; Vetter, Michael; Martin Garcia, Isidro; Wambach, K; Roever, I; Fath, P; Ortega Villasclaras, Pablo Rafael; Bermejo Broto, Alexandra; Alcubilla Gonzalez, Ramon
    20th European Photovoltaic Solar Energy Conference and Exhibition
    p. 793-796
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  • Injection dependent lifetime spectroscopy and PC1D simulations of phosphorous emitters doped with solid diffusion sources

     Ortega Villasclaras, Pablo Rafael; Vetter, Michael; Bermejo Broto, Alexandra; Torres, I; Alcubilla Gonzalez, Ramon
    20th European Photovoltaic Solar Energy Conference and Exhibition
    p. 1228-1231
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  • Stand-alone PV systems control

     Guasch Murillo, Daniel; Silvestre Berges, Santiago; Ortega Villasclaras, Pablo Rafael; Calatayud Camps, Robert
    European Photovoltaic Solar Energy Conference
    p. 2055-2058
    Presentation's date: 2004-06-07
    Presentation of work at congresses

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  • Solar cell model parameters extractor based on Matlab

     Ortega Villasclaras, Pablo Rafael; Silvestre Berges, Santiago; Guasch Murillo, Daniel; Navarro, D; Calatayud Camps, Robert
    European Photovoltaic Solar Energy Conference
    p. 2194-2197
    Presentation of work at congresses

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  • PV systems modelling unsing Matlab and Simulink

     Silvestre Berges, Santiago; Guasch Murillo, Daniel; Ortega Villasclaras, Pablo Rafael; Calatayud Camps, Robert
    European Photovoltaic Solar Energy Conference
    p. 2207-2210
    Presentation of work at congresses

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  • Current mode drive of electrostatic actuators

     Castañer Muñoz, Luis Maria; Pons Nin, Joan; Ortega Villasclaras, Pablo Rafael; Jimenez Serres, Vicente; Bermejo Sanchez, Sergio; Buigas, M
    Date: 2003-11
    Report

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  • Adjust of solar cell model parameters based in MATLAB

     Silvestre Berges, Santiago; Guasch Murillo, Daniel; Ortega Villasclaras, Pablo Rafael; Navarro Mas, Nacho
    Spanish Conference on Electron Devices
    p. 1-3
    Presentation's date: 2003-02
    Presentation of work at congresses

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  • Fabrication of monolithic photovoltaic minimodules using bulk micromachining techniques

     Bermejo Broto, Alexandra; Ortega Villasclaras, Pablo Rafael; Castañer Muñoz, Luis Maria
    Smart Sensors, Actuators, and MEMS (SPIE - The International Society for Optical Engineering, volum 5116, 2 de 2)
    p. 587-595
    Presentation of work at congresses

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  • Characterization of solar cells using a model parameter extractor in matlab environment

     Guasch Murillo, Daniel; Silvestre Berges, Santiago; Ortega Villasclaras, Pablo Rafael
    Spanish Conference on Electron Devices
    p. 74
    Presentation of work at congresses

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