Listar por autoría "713519ab-a31d-40e5-a94e-7458fac8caff"
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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 ... -
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 ... -
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) -
Extracting in Situ Charge Carrier Diffusion Parameters in Perovskite Solar Cells with Light Modulated Techniques
Bou, Agustín; A̅boliņš, Haralds; Ashoka, Arjun; Cruanyes, Héctor; Guerrero, Antonio; Deschler, Felix; Bisquert, Juan American Chemical Society (2021-05-24)Frequency resolved methods are widely used to determine device properties of perovskite solar cells. However, obtaining the electronic parameters for diffusion and recombination by impedance spectroscopy has been so far ... -
Impedance Spectroscopy Dynamics of Biological Neural Elements: From Memristors to Neurons and Synapses
Bou, Agustín; Bisquert, Juan American Chemical Society (2021-09-09)Understanding the operation of neurons and synapses is essential to reproducing biological computation. Building artificial neuromorphic networks opens the door to a new generation of faster and low-energy-consuming ... -
Inductive and Capacitive Hysteresis of Halide Perovskite Solar Cells and Memristors Under Illumination
Munoz-Diaz, Laura; Rosa, Álvaro Julián; Bou, Agustín; S. Sánchez, Rafael; Romero Herrero, Beatriz; John, Rohit Abraham; Kovalenko, Maksym V.; Guerrero, Antonio; Bisquert, Juan; Laura Muñoz-Díaz Frontiers Media (2022)The current–voltage curves of memristors exhibit significant hysteresis effects of use for information storage and computing. Here, we provide a comparison of different devices based on MAPbI3 perovskite with different ... -
Inductive Loop in the Impedance Response of Perovskite Solar Cells Explained by Surface Polarization Model
Ghahremanirad, Elnaz; Bou, Agustín; Olyaee, Saeed; Bisquert, Juan American Chemical Society (2017-03)The analysis of perovskite solar cells by impedance spectroscopy has provided a rich variety of behaviors that demand adequate interpretation. Two main features have been reported: First, different impedance spectral arcs ... -
Intensity-Modulated Photocurrent Spectroscopy for Solar Energy Conversion Devices: What Does a Negative Value Mean?
Cardenas-Morcoso, Drialys; Bou, Agustín; Ravishankar, Sandheep; García-Tecedor, Miguel; Gimenez, Sixto; Bisquert, Juan American Chemical Society (2020-01-10)Small perturbation techniques constitute a wide family of tools for the characterization of solar energy conversion devices such as photovoltaic cells and photoelectrochemical (PEC) cells for solar fuel production. Two ... -
Kinetic and material properties of interfaces governing slow response and long timescale phenomena in perovskite solar cells.
Wang, Hongxia; Guerrero, Antonio; Bou, Agustín; Al-Mayouf, Abdullah; Bisquert, Juan Royal Society of Chemistry (2019-05-01)The last decade has witnessed the skyrocketing progress of perovskite solar cells (PSCs) with their current world record energy conversion efficiency reaching over 24%. Nevertheless, the unsatisfactory device stability and ... -
Limited information of impedance spectroscopy about electronic diffusion transport: The case of perovskite solar cells
Bou, Agustín; Pockett, Adam; Cruanyes, Héctor; Raptis, Dimitrios; Watson, Trystan; Carnie, Matt; Bisquert, Juan American Institute of Physics (2022)Impedance Spectroscopy (IS) has proven to be a powerful tool for the extraction of significant electronic parameters in a wide variety of electrochemical systems, such as solar cells or electrochemical cells. However, ... -
Long-term potentiation mechanism of biological postsynaptic activity in neuro-inspired halide perovskite memristors
HERNÁNDEZ-BALAGUERA, ENRIQUE; Muñoz-Díaz, Laura; Bou, Agustín; Romero, Beatriz; Ilyassov, Baurzhan; Guerrero, Antonio; Bisquert, Juan IOP Publishing (2023-05-26)Perovskite memristors have emerged as leading contenders in brain-inspired neuromorphic electronics. Although these devices have been shown to accurately reproduce synaptic dynamics, they pose challenges for in-depth ... -
Radiative Recombination Processes in Halide Perovskites Observed by Light Emission Voltage Modulated Spectroscopy
S. Sánchez, Rafael; Villanueva-Antolí, Alexis; Bou, Agustín; Ruiz-Murillo, Marta; Mora-Sero, Ivan; Bisquert, Juan Wiley (2023)The kinetics of light emission in halide perovskite light-emitting diodes (LEDs) and solar cells is composed of a radiative recombination of voltage-injected carriers mediated by additional steps such as carrier trapping, ... -
Resistance transient dynamics in switchable perovskite memristors
Bisquert, Juan; Bou, Agustín; Guerrero, Antonio; Hernández-Balaguera, Enrique AIP Publishing (2023-09)Memristor devices have been investigated for their properties of resistive modulation that can be used in data storage and brain-like computation elements as artificial synapses and neurons. Memristors are characterized ... -
Switching Off Hysteresis in Perovskite Solar Cells by Fine‐Tuning Energy Levels of Extraction Layers
Guerrero, Antonio; Bou, Agustín; Matt, Gebhard J.; Almora Rodríguez, Osbel; Heumueller, Thomas; Garcia-Belmonte, Germà; Bisquert, Juan; Hou, Yi; Brabec, Christoph J. Wiley (2018-07-25)Lead halide perovskites often suffer from a strong hysteretic behavior on their j–V response in photovoltaic devices that has been correlated with slow ion migration. The electron extraction layer has frequently been pointed ... -
Tailoring Crystal Structure of FA0.83Cs0.17PbI3 Perovskite Through Guanidinium Doping for Enhanced Performance and Tunable Hysteresis of Planar Perovskite Solar Cells
Duy Pham, Ngoc; Zhang, Chunmei; Tiong, Vincent Tiing; Zhang, Shengli; Will, Geoffrey; Bou, Agustín; Bisquert, Juan; Shaw, Paul E.; Du, Aijun; Wilson, Gregory J; Wang, Hongxia Wiley (2019)Current-voltage hysteresis of perovskite solar cells (PSCs) has raised the concern of accurate performance measurement in practice. Although various theories have been proposed to elucidate this phenomenon, the origin of ...