Listar por autoría "428762fe-4d84-4ba1-a3af-6b52a2502b6a"
Mostrando ítems 1-20 de 34
-
2D PEA2SnI4 Inkjet-Printed Halide Perovskite LEDs on Rigid and Flexible Substrates
Vescio, Giovanni; Sanchez-Diaz, Jesus; Frieiro Castro, Juan Luis; S. Sánchez, Rafael; Hernández, Sergi; Cirera, Albert; Mora-Sero, Ivan; Garrido, Blas American Chemical Society (2022)Lead-free PEA2SnI4-based perovskite LEDs are successfully inkjet-printed on rigid and flexible substrates. Red-emitting devices (λmax = 633 nm) exhibit, under ambient conditions, a maximum external quantum efficiency ... -
A Comparative Study of Light‐Emitting Diodes Based on All‐Inorganic Perovskite Nanoparticles (CsPbBr3) Synthesized at Room Temperature and by a Hot‐Injection Method
Clasen Hames, Bruno; S. Sánchez, Rafael; Fakharuddin, Azhar; Mora-Sero, Ivan Wiley-VCH Verlag (2018-04)Perovskite nanoparticles (PeNPs) have been extensively studied for optoelectronic applications, owing to their extremely high photoluminescence quantum yield, tunable band gap, and exceptionally narrow emission spectra. ... -
All solution processed low turn-on voltage near infrared LEDs based on core–shell PbS–CdS quantum dots with inverted device structure
S. Sánchez, Rafael; Binetti, Enrico; Torre, J. A.; Garcia-Belmonte, Germà; Striccoli, Marinella; Mora-Sero, Ivan Royal Society of Chemistry (2014)Colloidal semiconductor quantum dots (QDs) are extraordinarily appealing for the development of light emitting devices (LEDs) due to tunable and pure color emission, brightness and solution processability. This last advantage ... -
Analysis of the Hysteresis Behavior of Perovskite Solar Cells with Interfacial Fullerene Self-Assembled Monolayers
Vallés Pelarda, Marta; Clasen Hames, Bruno; García-Benito, Inés; Almora Rodríguez, Osbel; Molina-Ontoria, Agustín; S. Sánchez, Rafael; Garcia-Belmonte, Germà; Martín, Nazario; Mora-Sero, Ivan American Chemical Society (2016-10)The use of self-assembled monolayers (SAMs) of fullerene derivatives reduces the hysteresis of perovskite solar cells (PSCs). We have investigated three different fullerene derivatives observing a decrease on hysteresis ... -
Balanced change in crystal unit cell volume and strain leads to stable halide perovskite with high guanidinium content
Serafini, Patricio; Gualdrón Reyes, Andrés Fabián; S. Sánchez, Rafael; Barea, Eva M; Masi, Sofia; Mora-Sero, Ivan Royal Society of Chemistry (2022)Up-to-date studies propose that strain in halide perovskites is one of the key factors that determine a device's efficiency and stability. Here, we show a systematic approach to characterize the phenomenon in the standard ... -
Boosting Long-Term Stability of Pure Formamidinium Perovskite Solar Cells by Ambient Air Additive Assisted Fabrication
muhammed, kunnummal; Masi, Sofia; Gualdrón Reyes, Andrés Fabián; S. Sánchez, Rafael; Barea, Eva M; Kreĉmarová, Marie; Sánchez Royo, Juan Francisco; Mora-Sero, Ivan American Chemical Society (2021-09-13)Due to the high industrial interest for perovskite-based photovoltaic devices, there is an urgent need to fabricate them under ambient atmosphere, not limited to low relative humidity (RH) conditions. The formamidinium ... -
Bright visible-infrared light emitting diodes based on hybrid halide perovskite with Spiro-OMeTAD as a hole-injecting layer
Jaramillo Quintero, Óscar A.; S. Sánchez, Rafael; Rincón, Marina; Mora-Sero, Ivan American Chemical Society (2015-05)Hybrid halide perovskites that are currently intensively studied for photovoltaic applications, also present outstanding properties for light emission. Here, we report on the preparation of bright solid state light emitting ... -
Continuous-Flow Synthesis of Orange Emitting Sn(II)-Doped CsBr Materials
Das Adhikari, Samrat; Masi, Sofia; Echeverría-Arrondo, Carlos; Miralles-Comins, Sara; S. Sánchez, Rafael; Alves Fernandes, Jesum; Chirvony, Vladimir; Martínez-Pastor, Juan P.; Sans, Victor; Mora-Sero, Ivan Wiley (2021-09-05)An ongoing demand toward lead-free all-inorganic cesium metal halide perovskites has presented Sn(II) as an ideal substitute of Pb(II) for applications in optoelectronic devices. The major concern regarding Sn(II) is the ... -
Continuous-Flow Synthesis of Orange Emitting Sn(II)-Doped CsBr Materials
Das Adhikari, Samrat; Masi, Sofia; Echeverría-Arrondo, Carlos; Miralles-Comins, Sara; S. Sánchez, Rafael; Alves Fernandes, Jesum; Chirvony, Vladimir; Martínez-Pastor, Juan P.; Sans, Victor; Mora-Sero, Ivan Wiley (2021-09-05)An ongoing demand toward lead-free all-inorganic cesium metal halide perovskites has presented Sn(II) as an ideal substitute of Pb(II) for applications in optoelectronic devices. The major concern regarding Sn(II) is the ... -
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 ... -
Device performance and light characteristics stability of quantum-dot-based white-light-emitting diodes
Clasen Hames, Bruno; Mora-Sero, Ivan; S. Sánchez, Rafael Springer Verlag (2017)Advances in image quality in recent decades have made it necessary to develop new technologies for producing displays to meet remarkably stricter standards. The display market is governed mainly by liquid crystal display ... -
Directional and Polarized Lasing Action on Pb-free FASnI3 Integrated in Flexible Optical Waveguide
Suárez, Isaac; Chirvony, Vladimir; Sanchez-Diaz, Jesus; S. Sánchez, Rafael; Mora-Sero, Ivan; Martínez-Pastor, Juan P. (2022)In this work, high-quality FASnI3 (FA, formamidinium) lead-free perovskite thin films are successfully incorporated in a flexible polyethylene terephthalate (PET) substrate to demonstrate amplified spontaneous emission ... -
Effect of different lead precursors on perovskite solar cell performance and stability
Aldibaja, Fadi Kamal; Badia Bou, Laura; Mas, Elena; S. Sánchez, Rafael; Barea, Eva M; Mora-Sero, Ivan Royal Society of Chemistry (2014-12)We present the use of halide (PbCl2) and non-halide lead precursors (Pb(OAc)2 (OAc = CH3CH2COO−), Pb(NO3)2, Pb(acac)2 (acac = (CH3COCHCOCH3)−) and PbCO3) for the preparation of perovskite solar cells. We have confirmed by ... -
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, Marina; 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, ... -
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 ... -
First Experimental Evidence of Amorphous Tin Oxide Formation in Lead-Free Perovskites by Spectroscopic Ellipsometry
Mannino, Giovanni; Sanchez-Diaz, Jesus; Smecca, Emanuele; Valastro, Salvatore; Deretzis, Ioannis; S. Sánchez, Rafael; MARTINEZ PASTOR, JUAN CARLOS; Mora-Sero, Ivan; ALBERTI, ALESSANDRA Wiley (2023)The most promising lead-free options for producing perovskite solar cells are tin halide perovskite materials. Herein, while in situ monitoring the optical evolution of the material in humid air, spectroscopic ellipsometry ... -
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 ... -
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 ... -
Light-induced effects on Spiro-OMeTAD films and hybrid lead halide perovskite solar cells
S. Sánchez, Rafael; Mas, Elena Elsevier (2016)Perovskite (PS) solar cells have emerged as a promising technology for low-cost and efficient photovoltaics. However, the main limiting factors are related to their low long-term stability. The loss of performance of ... -
New iridium complex as additive to the spiro-OMeTAD in perovskite solar cells with enhanced stability
Badia Bou, Laura; Mas, Elena; S. Sánchez, Rafael; Barea, Eva M; Bisquert, Juan; Mora-Sero, Ivan AIP Publishing (2014-07-23)A new iridium complex, IrCp*Cl(PyPyz)[TFSI], has been synthesized and used as additive for the hole transporter material, spiro-OMeTAD, in perovskite solar cells. The cells prepared with this Ir additive present higher ...