Listar por autoría "596e4386-6395-4f8f-950d-b7805c3dc732"

Mostrando ítems 1-20 de 96

    • openAccess   Accelerated Polyethylene Terephthalate (PET) Enzymatic Degradation by Room Temperature Alkali Pre-treatment for Reduced Polymer Crystallinity 

      Giraldo Narcizo, Sariah de los Angeles; El Guenani Mir, Nihal; Sánchez-Pérez, Ana María; Guerrero, Antonio Wiley (2022-11-07)
      Polyethylene terephthalate (PET) is the most widely employed plastic for single-use applications. The use of enzymes isolated from microorganisms, such as PETase with the capacity to hydrolyze PET into its monomers, ...

    • openAccess   Amorphous Iron Oxyhydroxide Nanosheets: Synthesis, Li Storage, and Conversion Reaction Kinetics 

      Xu, Chen; Zeng, Yi; Rui, Xianhong; Zhu, Jixin; Tan, Huiteng; Guerrero, Antonio; Toribio, Juan; Bisquert, Juan; Garcia-Belmonte, Germà; Yan, Qingyu American Chemical Society (2013)
      We present a facile approach to synthesize amorphous iron oxyhydroxide nanosheet from the surfactant-assisted oxidation of iron sulfide nanosheet. The amorphous iron oxyhydroxide nanosheet is porous and has a high surface ...

    • openAccess   Assessing the Drawbacks and Benefits of Ion Migration in Lead Halide Perovskites 

      Sakhatskyi, Kostiantyn; John, Rohit Abraham; Guerrero, Antonio; Tsarev, Sergey; Sabisch, Sebastian; Das, Tisita; Matt, Gebhard J.; Yakunin, Sergii; Cherniukh, Ihor; Kotyrba, Martin; Berezovska, Yuliia; Bodnarchuk, Maryna; Chakraborty, Sudip; Bisquert, Juan; Kovalenko, Maksym V. American Chemical Society (2022-10-14)
      Since the inception of the unprecedented rise of halide perovskites for photovoltaic research, ion migration has shadowed this material class with undesirable hysteresis and degradation effects, limiting its practical ...

    • closedAccess   Blade Coating High-Quality Formamidinium–Cesium Lead Halide Perovskites with Green Solvent for Efficient and Stable Solar Cells 

      Zheng, Yupeng; Xu, Xueqing; Liu, Shijun; Xu, Gang; Bi, Zhuoneng; Zhu, Yanqing; Wang, Kai; Liu, Shengzhong (Frank); Guerrero, Antonio; Xing, Guichuan Wiley (2022)
      Perfecting large-area perovskite film coating technology remains a key challenge to commercialize perovskite solar cells. Herein, nontoxic dimethyl sulfoxide (DMSO) is recommended as the only solvent to fabricate formamidinium ...

    • closedAccess   Carrier density and interfacial kinetics of mesoporous TiO2 in aqueous electrolyte determined by impedance spectroscopy 

      Gimenez, Sixto; Dunn, Halina K.; Rodenas, Pau; Fabregat-Santiago, Francisco; Miralles, Sara G.; Barea, Eva M; Trevisan, Roberto; Guerrero, Antonio; Bisquert, Juan Elsevier (2012)
      Water splitting at a semiconductor/solution interface with the only input of sunlight to generate hydrogen is one of the most attractive strategies to produce and store chemical energy. In the present study we have ...

    • closedAccess   Changes from Bulk to Surface Recombination Mechanisms between Pristine and Cycled Perovskite Solar Cells 

      Correa-Baena, Juan-Pablo; Turren Cruz, Silver Hamill; Tress, Wolfgang; Hagfeldt, Anders; Aranda Alonso, Clara; Shooshtari, Leyla; Bisquert, Juan; Guerrero, Antonio American Chemical Society (2017)
      Several aspects on the photophysical characterization of lead halide hybrid organic–inorganic perovskite solar cells remain unsolved. It has been observed that ionic transport and polarization of the interfaces cause very ...

    • openAccess   Charge carrier transport and contact selectivity limit the operation of PTB7-based organic solar cells of varying active layer thickness 

      Guerrero, Antonio; Montcada, Núria F.; Ajuria, Jon; Etxebarria, Ikerne; Pacios, Roberto; Garcia-Belmonte, Germà; Palomares, Emilio Royal Society of Chemistry (2013-08)
      In this work we study the different electrical loss pathways occurring during the operation of bulk heterojunction solar cells by using a variety of electrical and optical characterization techniques beyond the current ...

    • openAccess   Chemical Inductor 

      Bisquert, Juan; Guerrero, Antonio American Chemical Society (2022-03-22)
      A multitude of chemical, biological, and material systems present an inductive behavior that is not electromagnetic in origin. Here, it is termed a chemical inductor. We show that the structure of the chemical inductor ...

    • closedAccess   Control of I–V Hysteresis in CH3NH3PbI3 Perovskite Solar Cell 

      Kim, Hui-Seon; Jang, In-Hyuk; Ahn, Namyoung; Choi, Mansoo; Guerrero, Antonio; Bisquert, Juan; Park, Nam-Gyu ACS Publications (2015-11-09)
      Mismatch of current (I)-voltage (V) curves with respect to the scan direction, so-called I–V hysteresis, raises critical issue in MAPbI3 (MA = CH3NH3) perovskite solar cell. Although ferroelectric and ion migration have ...

    • openAccess   Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr3 Single Crystals 

      García-Batlle, Marisé; Mayén Guillén, Javier; Chapran, Marian; Baussens, Oriane; Zaccaro, Julien; Verilhac, Jean‐Marie; Gros-Daillon, Eric; Guerrero, Antonio; Almora Rodríguez, Osbel; Garcia-Belmonte, Germà American Chemical Society (2022-03-11)
      The optoelectronic properties of halide perovskite materials have fostered their utilization in many applications. Unravelling their working mechanisms remains challenging because of their mixed ionic–electronic conductive ...

    • openAccess   Crystalline Clear or Not: Beneficial and Harmful Effects of Water in Perovskite Solar Cells 

      Aranda Alonso, Clara; Guerrero, Antonio; Bisquert, Juan Wiley (2019-10-16)
      Clarification of how water affects the photovoltaic performance of perovskite solar cells is one of the major challenges to successfully develop a large‐scale low‐cost fabrication process. Many authors have reported ...

    • closedAccess   Current-voltage characteristics of bulk heterojunction organic solar cells: connection between light and dark curves 

      Pérez Boix, Pablo; Guerrero, Antonio; Marchesi, Luis F.; Garcia-Belmonte, Germà; Bisquert, Juan Wiley (2011-11)
      A connection is established between recombination and series resistances extracted from impedance spectroscopy and current-voltage curves of polythiophene:fullerene organic solar cells. Recombination is shown to depend ...

    • openAccess   Defect tolerant perovskite solar cells from blade coated non-toxic solvents 

      Bi, Zhuoneng; Rodríguez-Martínez, Xabier; Aranda Alonso, Clara; Pascual-San-José, Enrique; Goñi, Alejandro R.; XU, XUEQING; Guerrero, Antonio Royal Society of Chemistry (2018-09)
      The process of crystallization of lead halide perovskites by industrially relevant techniques involving non-toxic solvents is not understood completely and needs improvement. To this date, devices with the highest efficiency ...

    • openAccess   Diamond-based electrodes for organic photovoltaic devices 

      Kovalenko, Alexander; Ashcheulov, Petr; Guerrero, Antonio; Heinrichová, Patricie; Fekete, Ladislav; Vala, Martin; Weiter, Martin; Kratochvílová, Irena; Garcia-Belmonte, Germà Elsevier (2015-03)
      The present paper demonstrates the possibility of replacing indium–tin oxide (ITO) with heavily boron-doped diamond (BDD). Plasma Enhanced Chemically Vapor Deposited BDDs layers of various thicknesses were prepared containing ...

    • closedAccess   Diffusion-Recombination Determines Collected Current and Voltage in Polymer:Fullerene Solar Cells 

      Ripollés Sanchis, Teresa; Guerrero, Antonio; Bisquert, Juan; Garcia-Belmonte, Germà American Chemical Society (2012)
      The basic operating mechanisms of organic bulk-heterojunction cells comprising poly(3-hexylthiophene (P3HT): [6,6]-phenyl-C 61-butyric acid methyl ester (PCBM) blends are examined based on the selection of diverse materials ...

    • openAccess   Direct observation of surface polarization at hybrid perovskite/Au interfaces by dark transient experiments 

      Caram, Jorge; García-Batlle, Marisé; Almora Rodríguez, Osbel; Arce, Roberto; Guerrero, Antonio; Garcia-Belmonte, Germà American Institute of Physics (2020-05-05)
      A distinctive feature of hybrid perovskite light-absorbing materials is the non-negligible ionic conductivity influencing photovoltaic performance and stability. Moving ions or vacancies can naturally accumulate at the ...

    • openAccess   Dynamic Instability and Time Domain Response of a Model Halide Perovskite Memristor for Artificial Neurons 

      Bisquert, Juan; Guerrero, Antonio American Chemical Society (2022-04-22)
      Memristors are candidate devices for constructing artificial neurons, synapses, and computational networks for brainlike information processing and sensory-motor autonomous systems. However, the dynamics of natural neurons ...

    • openAccess   Electrical field profile and doping in planar lead halide perovskite solar cells 

      Guerrero, Antonio; Juarez-Perez, Emilio J.; Bisquert, Juan; Mora-Sero, Ivan; Garcia-Belmonte, Germà AIP Publishing (2014-09-29)
      Hybrid lead halide perovskites (PVKs) have emerged as novel materials for photovoltaics and have rapidly reached very large solar to electricity power conversion efficiencies. As occurring with other kind of solar technologies ...

    • openAccess   Electrodeposited NiO anode interlayers: Enhancement of the charge carrier selectivity in organic solar cells 

      Ripollés Sanchis, Teresa; Guerrero, Antonio; Azaceta, Eneko; Tena-Zaera, Ramón; Garcia-Belmonte, Germà Elsevier (2013-10)
      Nickel oxide (NiO) thin films prepared by cathodic electrodeposition exhibit superior electrical performace than PEDOT:PSS when used as anode interlayers of bulk-heterojunction solar cells. Devices incorporating 30 nm-thick ...

    • openAccess   Elucidating Operating Modes of Bulk-Heterojunction Solar Cells from Impedance Spectroscopy Analysis 

      Garcia-Belmonte, Germà; Guerrero, Antonio; Bisquert, Juan American Chemical Society (2013)
      We discuss the progress and challenges in the application of impedance spectroscopy analysis to determine key processes and parameters in organic bulk-heterojunction solar cells. When carrier transport or outer interface ...