• openAccess   Colloidal PbS and PbSeS Quantum Dot Sensitized Solar Cells Prepared by Electrophoretic Deposition 

      Parsi Benehkohal, Nima; González Pedro, Victoria; Boix, Pablo P; Chavhan, Sudam; Tena-Zaera, Ramón; Demopoulos, George P.; Mora-Sero, Ivan American Chemical Society (2012)
      Here we report the developement of quantum dot sensitized solar cells (QDSCs) using colloidal PbS and PbSeS QDs and polysulfide electrolyte for high photocurrents. QDSCs have been prepared in a novel sensitizing way employing ...
    • openAccess   Effect of organic and inorganic passivation in quantum-dot-sensitized solar cells 

      De La Fuente, M. S.; S. Sánchez, Rafael; González Pedro, Victoria; Boix, Pablo P; Mhaisalkar, S. G.; Rincón, M. E.; Bisquert, Juan; Mora-Sero, Ivan American Chemical Society (2013)
      The effect of semiconductor passivation on quantum-dot-sensitized solar cells (QDSCs) has been systematically characterized for CdS and CdS/ZnS. We have found that passivation strongly depends on the passivation agent, ...
    • closedAccess   Effect of the bridge substitution on the efficiency of dye-sensitized solar cells 

      González Pedro, Victoria; Barea, Eva M; Langa, Fernando; De la Cruz, Pilar; Pelado, Beatriz Elsevier (2012-12)
      We have designed and synthesized a novel D–π–A dye based on zinc porphyrin as the donor, cyanoacrylic acid as the acceptor and trans-bis(3,4-ethylenedioxythiophene)vinylene as the bridge. Under standard global AM 1.5 solar ...
    • openAccess   Efficient passivated phthalocyanine-quantum dot solar cells 

      Blas Ferrando, Vicente M.; Ortiz, Javier; González Pedro, Victoria; S. Sánchez, Rafael; Mora-Sero, Ivan; Fernández Lázaro, Fernando; Sastre Santos, Ángela Royal Society of Chemistry (2014-12-08)
      The power conversion efficiency of CdSe and CdS quantum dot sensitized solar cells is enhanced by passivation with asymmetrically substituted phthalocyanines. The introduction of the phthalocyanine dye increases the ...
    • closedAccess   Enhanced Carrier Transport Distance in Colloidal PbS Quantum-Dot-Based Solar Cells Using ZnO Nanowires 

      Wang, Haibin; González Pedro, Victoria; Kubo, Takaya; Fabregat-Santiago, Francisco; Bisquert, Juan; Sanehira, Yoshitaka American Chemical Society (2015-11)
      Nanostructured solar cells are a promising area of research for the production of low cost devices that may eventually be capable of complementing or even replacing present technologies in the field of solar power ...
    • closedAccess   General Working Principles of CH3NH3PbX3 Perovskite Solar Cells 

      González Pedro, Victoria; Juarez-Perez, Emilio J.; Arsyad, Waode Sukmawati; Barea, Eva M; Fabregat-Santiago, Francisco; Mora-Sero, Ivan; Bisquert, Juan American Chemical Society (2014)
      Organometal halide perovskite-based solar cells have recently realized large conversion efficiency over 15% showing great promise for a new large scale cost-competitive photovoltaic technology. Using impedance spectroscopy ...
    • openAccess   Harnessing infrared photons for photoelectrochemical hydrogen generation. A PbS quantum dot based "quasi-artificial leaf" 

      Trevisan, Roberto; Rodenas, Pau; González Pedro, Victoria; Sima, Cornelia; S. Sánchez, Rafael; Barea, Eva M; Mora-Sero, Ivan; Fabregat-Santiago, Francisco; Gimenez, Sixto American Chemical Society (2013)
      Hydrogen generation by using quantum dot (QD) based heterostructures has emerged as a promising strategy to develop artificial photosynthesis devices. In the present study, we sensitize mesoporous TiO2 electrodes with ...
    • openAccess   High performing PbS Quantum Dot Sensitized Solar Cells exceeding 4% efficiency: The role of metal precursor in the electron injection and charge separation 

      González Pedro, Victoria; Sima, Cornelia; Marzari, Gabriela; Boix, Pablo P; Gimenez, Sixto; Qing, Shen; Dittrich, Thomas; Mora-Sero, Ivan Royal Society of Chemistry (2013)
      Here we report the preparation of high performance Quantum Dot Sensitized Solar Cells (QDSCs) based on PbS–CdS co-sensitized nanoporous TiO2 electrodes. QDs were directly grown on the TiO2 mesostructure by the Successive ...
    • closedAccess   Impedance spectroscopic analysis of high-performance dye sensitized solar cells based on nano-clay electrolytes 

      González Pedro, Victoria; Sakurai, Hideki; Tomita, Mitsuru; Ito, Bruno Ieri; Fabregat-Santiago, Francisco; Uchida, Satoshi; Segawa, Hiroshi Elsevier (2016)
      In this work we present quasi-solid state dye-sensitized solar cells obtained employing artificial hydrotalcite nano-clay as electrolyte additive, with a greatly improved photo-energy conversion efficiency of up to 10.9% ...
    • closedAccess   Interfacial engineering of quantum dot-sensitized TiO2 fibrous electrodes for futuristic photoanodes in photovoltaic applications 

      Sudhagar, P.; González Pedro, Victoria; Mora-Sero, Ivan; Fabregat-Santiago, Francisco; Bisquert, Juan; Kang, Yong Soo Royal Society of Chemistry (2012)
      Herein we report generic surface treatment approaches to improve the electronic interfaces of quantum dot-sensitized TiO2 fiber electrodes, thereby promoting their photoanode performance. Highly dense, continuous and ...
    • openAccess   Mechanism of carrier accumulation in perovskite thin-absorber solar cells 

      Mora-Sero, Ivan; González Pedro, Victoria; Fabregat-Santiago, Francisco; Juarez-Perez, Emilio J.; Kim, Hui-Seon; Park, Nam-Gyu; Bisquert, Juan Nature Publishing Group (2013)
      Photovoltaic conversion requires two successive steps: accumulation of a photogenerated charge and charge separation. Determination of how and where charge accumulation is attained and how this accumulation can be identified ...
    • openAccess   Organo-metal halide perovskite-based solar cells with CuSCN as the inorganic hole selective contact 

      Chavhan, Sudam; Miguel, Óscar; Grande, Hans-Jurgen; González Pedro, Victoria; S. Sánchez, Rafael; Barea, Eva M; Mora-Sero, Ivan; Tena-Zaera, Ramón Royal Society of Chemistry (2014-06)
      CuSCN is proposed as a cost-competitive hole selective contact for the emerging organo-metal halide perovskite-based solar cells. The CuSCN films have been deposited by a solution casting technique, which has proven to be ...
    • openAccess   Origin of efficiency enhancement in Nb2O5 coated titanium dioxide nanorod based dye sensitized solar cells 

      Barea, Eva M; XU, XUEQING; González Pedro, Victoria; Ripollés Sanchis, Teresa; Fabregat-Santiago, Francisco; Bisquert, Juan Royal Society of Chemistry (2011-05-13)
      Ordered one-dimensional metal oxides are considered promising architectures for dye-sensitized solar cells (DSC). Here we explore the properties determining the photovoltaic performance of DSC based on titanium dioxide ...
    • closedAccess   Panchromatic Solar-to-H2 Conversion by a Hybrid Quantum Dots-Dye Dual Absorber Tandem Device 

      González Pedro, Victoria; Zarazúa, Isaac; Barea, Eva M; Fabregat-Santiago, Francisco; Rosa, Elder de la; Mora-Sero, Ivan; Gimenez, Sixto American Chemical Society (2014-01)
      Solution-processed mesoscopic oxide semiconductor-based materials offer potentially low-cost and high stability alternative for next generation of water to hydrogen conversion photoelectrochemical cells (PEC). In the present ...
    • closedAccess   Photoanodes Based on Nanostructured WO3 for Water Splitting 

      Tacca, Alessandra; Meda, Laura; Marra, Gianluigi; Savoini, Alberto; Caramori, Stefano; Cristino, Vito; Bignozzi, Carlo Alberto; González Pedro, Victoria; Pérez Boix, Pablo; Gimenez, Sixto; Bisquert, Juan Wiley (2012-08)
      Anodically grown WO3 photoelectrodes prepared in an N-methylformamide (NMF) electrolyte have been investigated with the aim of exploring the effects induced by anodization time and water concentration in the electrochemical ...
    • closedAccess   Porphyrin Dyes with High Injection and Low Recombination for Highly Efficient Mesoscopic Dye-Sensitized Solar Cells 

      Barea, Eva M; González Pedro, Victoria; Ripollés Sanchis, Teresa; Wu, Hui-Ping; Li, Lu-Lin; Yeh, Chen-Yu; Wei-Guang Diau, Eric; Bisquert, Juan ACS (2011-05)
      The photovoltaic performance and charge recombination characteristics of porphyrin-based dye-sensitized solar cell (DSC) devices have been investigated using the impedance spectroscopy (IS) technique. The IS results provide ...
    • openAccess   Selective contacts drive charge extraction in quantum dot solids via asymmetry in carrier transfer kinetics 

      Mora-Sero, Ivan; González Pedro, Victoria; Gimenez, Sixto; Bertoluzzi, Luca; Fabregat-Santiago, Francisco; Kemp, Kyle W.; Sargent, Edward H.; Bisquert, Juan Nature Publishing Group (2013)
      Colloidal quantum dot solar cells achieve spectrally selective optical absorption in a thin layer of solution-processed, size-effect tuned, nanoparticles. The best devices built to date have relied heavily on drift-based ...
    • closedAccess   Slow dynamic processes in lead halide perovskite solar cells. Characteristic times and hysteresis 

      S. Sánchez, Rafael; González Pedro, Victoria; Lee, Jin Wook; Park, Nam-Gyu; Kang, Yong Soo; Mora-Sero, Ivan; Bisquert, Juan American Chemical Society (2014-06)
      Characteristic times of perovskite solar cells (PSCs) have been measured by different techniques: transient photovoltage decay, transient photoluminescence, and impedance spectroscopy. A slow dynamic process is detected ...
    • openAccess   Synergistic Interaction of Dyes and Semiconductor Quantum Dots for Advanced Cascade Cosensitized Solar Cells 

      Blas Ferrando, Vicente M.; Ortiz, Javier; González Pedro, Victoria; S. Sánchez, Rafael; Mora-Sero, Ivan; Fernández Lázaro, Fernando; Sastre Santos, Ángela Wiley (2015-06-03)
      A new procedure for the cosensitization with quantum dots (QDs) and dyes for sensitized solar cells is reported here. Cascade cosensitization of TiO2 electrodes is obtained by the sensitization with CdS QDs and zinc ...
    • openAccess   Temperature Effects on the Photovoltaic Performance of Planar Structure Perovskite Solar Cells 

      Cojocaru, Ludmila; Uchida, Satoshi; Sanehira, Yoshitaka; González Pedro, Victoria; Bisquert, Juan; Nakazaki, Jotaro; Kubo, Takaya; Segawa, Hiroshi Chemical Society of Japan (2015-09-10)
      Temperature effects of CH3NH3PbI3 perovskite solar cells having simple planar architecture were investigated on the crystal structure and photovoltaic performance. The obvious changes in the CH3NH3PbI3 crystal structure ...