Visualitza INAM_Articles per autoria "b2ece2f9-134a-4444-8c74-85b7a8123095"
Ara mostrant els elements 1-20 d 103
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A Frequency Domain Analysis of the Excitability and Bifurcations of the FitzHugh–Nagumo Neuron Model
Bisquert, Juan American Chemical Society (2021-11-18)The dynamics of neurons consist of oscillating patterns of a membrane potential that underpin the operation of biological intelligence. The FitzHugh−Nagumo (FHN) model for neuron excitability generates rich dynamical ... -
Accelerating the Assessment of Hysteresis in Perovskite Solar Cells
Hernández-Balaguera, Enrique; Bisquert, Juan American Chemical Society (2024)Halide perovskite materials have reached important milestones in the photovoltaic field, positioning them as realistic alternatives to conventional solar cells. However, unavoidable kinetic phenomena have represented a ... -
Advances and Obstacles on Perovskite Solar Cell Research from Material Properties to Photovoltaic Functio
Bisquert, Juan; Qi, Yabing; Ma, Tingli; Yan, Yanfa American Chemical Society (2017) -
Analysis of the Influence of Selective Contact Heterojunctions on the Performance of Perovskite Solar Cells
García-Rosell, Manuel; Bou, Agustín; Jiménez Tejada, Juan Antonio; Bisquert, Juan; Lopez-Varo, Pilar ACS (2018-03)Knowledge of the mechanisms that take place at the selective contacts, located at the charge-transport-layer (CTL)/perovskite heterojunctions, is crucial for the optimization of perovskite solar cells. Anomalous high ... -
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 ... -
Beyond Impedance Spectroscopy of Perovskite Solar Cells: Insights from the Spectral Correlation of the Electrooptical Frequency Techniques
Bou, Agustín; Pockett, Adam; Raptis, Dimitrios; Watson, Trystan; Carnie, Matt; Bisquert, Juan American Chemical Society (2020-09-21)Small perturbation techniques have proven to be useful tools for the investigation of perovskite solar cells. A correct interpretation of the spectra given by impedance spectroscopy (IS), intensity-modulated photocurrent ... -
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 ... -
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 ... -
Cooperative Catalytic Effect of ZrO2 and a-Fe2O3 Nanoparticles on BiVO4 Photoanodes for Enhanced Photoelectrochemical Water Splitting
Shaddad, Maged; Ghanem, Mohamed A.; Al-Mayouf, Abdullah; Gimenez, Sixto; Bisquert, Juan; Herraiz Cardona, Isaac Wiley (2016-09)Photoelectrochemical water splitting with metal oxide semiconductors offers a cost-competitive alternative for the generation of solar fuels. Most of the materials studied so far suffer from poor charge-transfer kinetics ... -
Cooperative kinetics of depolarization in CH3NH3PbI3 perovskite solar cells
Bertoluzzi, Luca; S. Sánchez, Rafael; Liu, Linfeng; Lee, Jin Wook; Mas, Elena; Han, Hongwei; Park, Nam-Gyu; Mora-Sero, Ivan; Bisquert, Juan Royal Society of Chemistry (2015)Despite the large photovoltaic performance recently achieved, many aspects of the working principles of hybrid organic–inorganic perovskite solar cells remain to be unveiled. We analyze the experimental features observed ... -
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 ... -
Crystalline-Size Dependence of Dual Emission Peak on Hybrid Organic Lead-Iodide Perovskite Films at Low Temperatures
Chulia-Jordan, Raquel; Mas, Elena; Segura, Alfredo; Bisquert, Juan; Martínez-Pastor, Juan P. American Chemical Society (2018-09)In this work, we have investigated the crystalline-size dependence of optical absorption and photoluminescence emission of CH3NH3PbI3 films, which is necessary to identify the potential practical applications of the gadgets ... -
Current-controlled memristors: resistive switching systems with negative capacitance and inverted hysteresis
Bisquert, Juan American Physical Society (2023)Resistive switching in memristors is being amply investigated for different applications in non-volatile memory (RRAM), neuromorphic computing and programmable logic devices. Memristors are conducting devices in which ... -
Defect migration in methylammonium lead iodide and its role in perovskite solar cell operation
Azpiroz, Jon M.; Mosconi, Edoardo; Bisquert, Juan; De Angelis, Filippo Royal Society of Chemistry (2015)In spite of the unprecedented advance of organohalide lead perovskites in the photovoltaics scenario, many of the characteristics of this class of materials, including their slow photoconductivity response, solar cell ... -
Device Physics of Hybrid Perovskite Solar cells: Theory and Experiment
Lopez-Varo, Pilar; Jiménez Tejada, Juan Antonio; Garcia-Rosell, Manuel; Ravishankar, Sandheep; Garcia-Belmonte, Germà; Bisquert, Juan; Almora Rodríguez, Osbel Wiley (2018)Perovskite solar cells (PSCs) exhibit a series of distinctive features in their optoelectronic response which have a crucial influence on the performance, particularly for long-time response. Here, a survey of recent ... -
Device physics recipe to make spiking neurons
Bisquert, Juan American Institute of Physics (2023-09-26)Neurons, which are made of biological tissue, exhibit cognitive properties that can be replicated in various material substrates. To create brain-inspired computational artificial systems, we can construct microscopic ... -
Distinction between capacitive and noncapacitive hysteretic currents in operation and degradation of perovskite solar cells
Garcia-Belmonte, Germà; Bisquert, Juan American Chemical Society (2016)Perovskite solar cells suffer from significant performance distortions under working conditions, usually known by the generic label of hysteretic effects. A classification of the fluctuations associated with current–voltage ... -
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 ... -
Effects of Frequency Dependence of the External Quantum Efficiency of Perovskite Solar Cells
Ravishankar, Sandheep; Aranda Alonso, Clara; Boix, Pablo P; Anta, Juan A.; Bisquert, Juan; Garcia-Belmonte, Germà American Chemical Society (2018-05)Perovskite solar cells are known to show very long response time scales, on the order of milliseconds to seconds. This generates considerable doubt over the validity of the measured external quantum efficiency (EQE) and ... -
Effects of Ion Distributions on Charge Collection in Perovskite Solar Cells
Lopez-Varo, Pilar; Jiménez Tejada, Juan Antonio; García-Rosell, Manuel; Anta, Juan A.; Ravishankar, Sandheep; Bou, Agustín; Bisquert, Juan American Chemical Society (2017)