Search Results - "Anta, Juan A."

Elucidating Transport-Recombination Mechanisms in Perovskite Solar Cells by Small-Perturbation Techniques by Guillén, Elena, Ramos, F. Javier, Anta, Juan A, Ahmad, Shahzada

“…Solar cells using perovskite as semiconducting pigment have recently attracted a surge of interest owing to their remarkable solar-to-electric conversion…”
Get full text

Towards a Universal Approach for the Analysis of Impedance Spectra of Perovskite Solar Cells: Equivalent Circuits and Empirical Analysis by Todinova, Anna, Contreras‐Bernal, Lidia, Salado, Manuel, Ahmad, Shahzada, Morillo, Neftalí, Idígoras, Jesús, Anta, Juan A.

“…Impedance spectroscopy is a powerful electrochemical small‐perturbation technique that provides dynamic electrical data in solar cells. This technique has been…”
Get full text

Electrons in the Band Gap: Spectroscopic Characterization of Anatase TiO2 Nanocrystal Electrodes under Fermi Level Control by Berger, Thomas, Anta, Juan A, Morales-Flórez, Víctor

“…Macroscopic properties of semiconductor nanoparticle networks in functional devices strongly depend on the electronic structure of the material. Analytical…”
Get full text

Interpretation of Diffusion and Recombination in Nanostructured and Energy-Disordered Materials by Stochastic Quasiequilibrium Simulation by Ansari-Rad, Mehdi, Anta, Juan A, Bisquert, Juan

“…The main electronic feature of many nanocrystalline semiconductors and organic materials is the presence of a distribution of localized states in the system…”
Get full text

Determination of Interfacial Charge-Transfer Rate Constants in Perovskite Solar Cells by Pydzińska, Katarzyna, Karolczak, Jerzy, Kosta, Ivet, Tena-Zaera, Ramon, Todinova, Anna, Idígoras, Jesus, Anta, Juan A., Ziółek, Marcin

“…A simple protocol to study the dynamics of charge transfer to selective contacts in perovskite solar cells, based on time‐resolved laser spectroscopy studies,…”
Get full text

Modification of Mesoporous TiO2 Films by Electrochemical Doping: Impact on Photoelectrocatalytic and Photovoltaic Performance by Idígoras, Jesús, Berger, Thomas, Anta, Juan A

“…The effect of reductive electrochemical doping of nanocrystalline TiO2 electrodes on their photoelectrocatalytic properties and their performance in…”
Get full text

The Impact of the Electrical Nature of the Metal Oxide on the Performance in Dye-Sensitized Solar Cells: New Look at Old Paradigms by Idígoras, Jesús, Burdziński, Gotard, Karolczak, Jerzy, Kubicki, Jacek, Oskam, Gerko, Anta, Juan A, Ziółek, Marcin

“…The process of primary charge separation in Ru-based dye-sensitized solar cells (DSSCs) based on both TiO2 and ZnO photoanodes has been studied in fully…”
Get full text

Illumination Intensity Dependence of the Recombination Mechanism in Mixed Perovskite Solar Cells by Castro‐Chong, Alejandra, Riquelme, Antonio J., Aernouts, Tom, Bennett, Laurence J., Richardson, Giles, Oskam, Gerko, Anta, Juan A.

“…Recombination mechanisms in solar cells are frequently assessed through the determination of ideality factors. In this work we report an abrupt change of the…”
Get full text

IR–Spectrophotoelectrochemical Characterization of Mesoporous Semiconductor Films by Berger, Thomas, Anta, Juan A

“…A combined IR–spectroscopic and electrochemical approach for the study of photo- and bias-induced reactions at the semiconductor/electrolyte interface is…”
Get full text

Electrochemical Reduction of Oxygen in Aprotic Ionic Liquids Containing Metal Cations: A Case Study on the Na–O2 system by Azaceta, Eneko, Lutz, Lukas, Grimaud, Alexis, Vicent‐Luna, Jose Manuel, Hamad, Said, Yate, Luis, Cabañero, German, Grande, Hans‐Jurgen, Anta, Juan A., Tarascon, Jean‐Marie, Tena‐Zaera, Ramon

“…Metal–air batteries are intensively studied because of their high theoretical energy‐storage capability. However, the fundamental science of electrodes,…”
Get full text

Origin of Nonlinear Recombination in Dye-Sensitized Solar Cells: Interplay between Charge Transport and Charge Transfer by Gonzalez-Vazquez, J. P, Oskam, Gerko, Anta, Juan A

“…Electron transfer between nanostructured semiconductor oxides and redox active electrolytes is a fundamental step in many processes of technological interest,…”
Get full text

ZnO-Based Dye-Sensitized Solar Cells by Anta, Juan A, Guillén, Elena, Tena-Zaera, Ramón

“…ZnO was one of the first metal oxides used in dye-sensitized solar cells (DSCs). It exhibits a unique combination of potentially interesting properties such as…”
Get full text

A Critical Evaluation of the Influence of the Dark Exchange Current on the Performance of Dye-Sensitized Solar Cells by García-Rodríguez, Rodrigo, Villanueva-Cab, Julio, Anta, Juan A, Oskam, Gerko

“…The influence of the thickness of the nanostructured, mesoporous TiO₂ film on several parameters determining the performance of a dye-sensitized solar cell is…”
Get full text

Electron transport in nanostructured metal-oxide semiconductors by Anta, Juan A.

“…Nanostructured films of metal-oxide semiconductors are the focus of intensive research nowadays due to their applications in the current quest for new sources…”
Get full text

Interface Play between Perovskite and Hole Selective Layer on the Performance and Stability of Perovskite Solar Cells by Salado, Manuel, Idigoras, Jesus, Calio, Laura, Kazim, Samrana, Nazeeruddin, Mohammad Khaja, Anta, Juan A, Ahmad, Shahzada

“…Perovskite solar cells with variety of hole selective contacts such as 2,2′,7,7′-tetrakis­(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD),…”
Get full text

Origin and Whereabouts of Recombination in Perovskite Solar Cells by Contreras-Bernal, Lidia, Salado, Manuel, Todinova, Anna, Calio, Laura, Ahmad, Shahzada, Idígoras, Jesús, Anta, Juan A

“…The success of metal halide perovskite solar cells stems from high absorption combined with a low recombination rate. Despite the fact these properties are…”
Get full text

Enhancing Moisture and Water Resistance in Perovskite Solar Cells by Encapsulation with Ultrathin Plasma Polymers by Idígoras, Jesús, Aparicio, Francisco J, Contreras-Bernal, Lidia, Ramos-Terrón, Susana, Alcaire, María, Sánchez-Valencia, Juan Ramón, Borras, Ana, Barranco, Ángel, Anta, Juan A

“…A compromise between high power conversion efficiency and long-term stability of hybrid organic–inorganic metal halide perovskite solar cells is necessary for…”
Get full text

Effects of Frequency Dependence of the External Quantum Efficiency of Perovskite Solar Cells by Ravishankar, Sandheep, Aranda, Clara, Boix, Pablo. P, Anta, Juan A, Bisquert, Juan, Garcia-Belmonte, Germà

“…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…”
Get full text

Universal Features of Electron Dynamics in Solar Cells with TiO2 Contact: From Dye Solar Cells to Perovskite Solar Cells by Todinova, Anna, Idígoras, Jesús, Salado, Manuel, Kazim, Samrana, Anta, Juan A

“…The electron dynamics of solar cells with mesoporous TiO2 contact is studied by electrochemical small-perturbation techniques. The study involved dye solar…”
Get full text

NiOx Passivation in Perovskite Solar Cells: From Surface Reactivity to Device Performance by Mohanraj, John, Samanta, Bipasa, Almora, Osbel, Escalante, Renán, Marsal, Lluis F, Jenatsch, Sandra, Gadola, Arno, Ruhstaller, Beat, Anta, Juan A, Caspary Toroker, Maytal, Olthof, Selina

“…Nonstoichiometric nickel oxide (NiOx) is one of the very few metal oxides successfully used as hole extraction layer in p-i-n type perovskite solar cells…”
Get full text