Listar por autoría "428762fe-4d84-4ba1-a3af-6b52a2502b6a"
Mostrando ítems 21-34 de 34
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Organo-metal halide perovskite-based solar cells with CuSCN as the inorganic hole selective contact
Chavhan, Sudam; Miguel, Óscar; Grande, Hans-Jurgen; González Pedro, Victoria; S. Sánchez, Rafael; Barea, Eva M; Mora-Sero, Ivan; Tena-Zaera, Ramón Royal Society of Chemistry (2014-06)CuSCN is proposed as a cost-competitive hole selective contact for the emerging organo-metal halide perovskite-based solar cells. The CuSCN films have been deposited by a solution casting technique, which has proven to be ... -
Photoinduced Giant Dielectric Constant in Lead Halide Perovskite Solar Cells
Juarez-Perez, Emilio J.; S. Sánchez, Rafael; Badia Bou, Laura; Garcia-Belmonte, Germà; Kang, Yong Soo; Mora-Sero, Ivan; Bisquert, Juan American Chemical Society (2014-06)Organic-inorganic lead trihalide perovskites have emerged as an outstanding photovoltaic material that demonstrated a high 17.9% conversion efficiency of sunlight to electricity in a short time. We have found a giant ... -
Photon Up-Conversion with Lanthanide-Doped Oxide Particles for Solar H2 Generation
Gonell, Francisco; Haro, Marta; S. Sánchez, Rafael; Negro, Patricia; Mora-Sero, Ivan; Bisquert, Juan; Julian-Lopez, Beatriz; Gimenez, Sixto American Chemical Society (2014-05)Up-conversion (UC) of infrared (IR) photons into visible radiation constitutes a promising strategy to enhance the light harvesting efficiency of photovoltaic and photoelectrochemical devices. In the present study, we ... -
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, ... -
Recombination reduction on lead halide perovskite solar cells based on low temperature synthesized hierarchical TiO2 nanorods
Jaramillo Quintero, Óscar A.; Solís de la Fuente, Mauricio; S. Sánchez, Rafael; Recalde, Ileana B.; Juarez-Perez, Emilio J.; Rincón, Marina; Mora-Sero, Ivan Royal Society of Chemistry (2016)Intensive research on the electron transport material (ETM) has been pursued to improve the efficiency of perovskite solar cells (PSCs) and decrease their cost. More importantly, the role of the ETM layer is not yet fully ... -
Single Step Deposition of an Interacting Layer of Perovskite Matrix with Embedded Quantum Dots
Ngo, Thi Tuyen; Suárez, Isaac; S. Sánchez, Rafael; Martínez-Pastor, Juan P.; Mora-Sero, Ivan Royal Society of Chemistry (2016)Hybrid lead halide perovskite (PS) derivatives have emerged as very promising materials for the development of optoelectronic devices in the last few years. At the same time, inorganic nanocrystals with quantum confinement ... -
Slow dynamic processes in lead halide perovskite solar cells. Characteristic times and hysteresis
S. Sánchez, Rafael; González Pedro, Victoria; Lee, Jin Wook; Park, Nam-Gyu; Kang, Yong Soo; Mora-Sero, Ivan; Bisquert, Juan American Chemical Society (2014-06)Characteristic times of perovskite solar cells (PSCs) have been measured by different techniques: transient photovoltage decay, transient photoluminescence, and impedance spectroscopy. A slow dynamic process is detected ... -
Synergistic Interaction of Dyes and Semiconductor Quantum Dots for Advanced Cascade Cosensitized Solar Cells
Blas Ferrando, Vicente M.; Ortiz, Javier; González Pedro, Victoria; S. Sánchez, Rafael; Mora-Sero, Ivan; Fernández Lázaro, Fernando; Sastre Santos, Ángela Wiley (2015-06-03)A new procedure for the cosensitization with quantum dots (QDs) and dyes for sensitized solar cells is reported here. Cascade cosensitization of TiO2 electrodes is obtained by the sensitization with CdS QDs and zinc ... -
Tin perovskite solar cells with >1,300 h of operational stability in N2 through a synergistic chemical engineering approach
Sanchez-Diaz, Jesus; S. Sánchez, Rafael; Masi, Sofia; Kreĉmarová, Marie; Álvarez, Agustín O.; Barea, Eva M; Rodriguez-Romero, Jesús; Chirvony, Vladimir; Sánchez Royo, Juan Francisco; Martínez-Pastor, Juan P.; Mora-Sero, Ivan Elsevier (2022-03-14)Despite the promising properties of tin-based halide perovskites, one clear limitation is the fast Sn+2 oxidation. Consequently, the preparation of long-lasting devices remains challenging. Here, we report a chemical ... -
Transformation of PbI2, PbBr2 and PbCl2 salts into MAPbBr3 perovskite by halide exchange as an effective method for recombination reduction
Belarbi, Eya; Vallés-Pelarda, Marta; Clasen Hames, Bruno; S. Sánchez, Rafael; Barea, Eva M; Maghraoui Meherzi, Hager; Mora-Sero, Ivan Royal Society of Chemistry (2017)Halide perovskite derivatives present unprecedented physical phenomena among those materials which are suitable for photovoltaics, such as a fast ion diffusion coefficient. In this paper it is reported how the benefits ... -
Tunable light emission by exciplex state formation between hybrid halide perovskite and core/shell quantum dots: Implications in advanced LEDs and photovoltaics
S. Sánchez, Rafael; Solís de la Fuente, Mauricio; Suárez, Isaac; Muñoz Matutano, G.; Martínez-Pastor, Juan P.; Mora-Sero, Ivan American Association for the Advancement of Science (2016)We report the first observation of exciplex state electroluminescence due to carrier injection between the hybrid lead halide perovskite (MAPbI3–xClx) and quantum dots (core/shell PbS/CdS). Single layers of perovskite (PS) ... -
Unusual Spectrally Reproducible and High Q-Factor Random Lasing in Polycrystalline Tin Perovskite Films
Chirvony, Vladimir; Suárez, Isaac; Sanchez-Diaz, Jesus; S. Sánchez, Rafael; Rodríguez Romero, Jesús; Mora-Sero, Ivan; Martínez-Pastor, Juan P. Wiley (2022)An unusual spectrally reproducible near-IR random lasing (RL) with no fluctuation of lasing peak wavelength is disclosed in polycrystalline films of formamidinium tin triiodide perovskite, which have been chemically ... -
Up-Converting Lanthanide-Doped YAG Nanospheres
Vallés Pelarda, Marta; S. Sánchez, Rafael; Barea, Eva M; Mora-Sero, Ivan; Julian-Lopez, Beatriz Frontiers Media (2020-08-07)The development of lanthanide-doped Y3Al5O12 (Ln:YAG) garnet nanostructures is a hot topic in the field of inorganic nanophosphors due to the current interest in developing small nanoparticles for solid-state lighting ... -
White light emission from lead-free mixed-cation doped Cs2SnCl6 nanocrystals
Das Adhikari, Samrat; Echeverría-Arrondo, Carlos; S. Sánchez, Rafael; Chirvony, Vladimir; Martínez-Pastor, Juan P.; Muñoz-Sanjose, Vicente; Agouram, Said; Mora-Sero, Ivan Royal Society of Chemistry (2022-01-13)We have designed a synthesis procedure to obtain Cs2SnCl6 nanocrystals (NCs) doped with metal ion(s) to emit visible light. Cs2SnCl6 NCs doped with Bi3+, Te4+ and Sb3+ ions emitted blue, yellow and red light, respectively. ...