Listar por autoría "079d9bc0-018f-4a01-ab75-208841dbfde6"
Mostrando ítems 1-20 de 23
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An Equivalent Circuit for Perovskite Solar Cell Bridging Sensitized to Thin Film Architectures
Yoo, So-Min; YOON, SEOG JOON; Anta, Juan A.; Lee, Hyo Joong; Boix, Pablo P; Mora-Sero, Ivan Elsevier (2019-08-15)Fundamental working mechanisms of perovskite solar cells (PSCs) remain an elusive topic of research. Impedance spectroscopy (IS) has been key to characterizing photovoltaic devices; however, its application to PSCs has ... -
Buried Interface Passivation of Perovskite Solar Cells by Atomic Layer Deposition of Al2O3
Ghosh, Sudeshna; Pariari, Debasmita; Behera, Tejmani; Boix, Pablo P; Ganesh, Narasimha; Basak, Susmita; Vidhan, Arya; Sarda, Nisha; Mora-Sero, Ivan; Chowdhury, Arindam; Narayan, K.S.; Sarma, D. D.; Sarkar, Shaibal American Chemical Society (2023-04-14)Despite having long excited carrier lifetimes and high mobilities in hybrid halide perovskite materials, conventional (n-i-p) devices exhibit significant interfacial nonradiative recombination losses that are little ... -
Colloidal PbS and PbSeS Quantum Dot Sensitized Solar Cells Prepared by Electrophoretic Deposition
Parsi Benehkohal, Nima; González Pedro, Victoria; Boix, Pablo P; Chavhan, Sudam; Tena-Zaera, Ramón; Demopoulos, George P.; Mora-Sero, Ivan American Chemical Society (2012)Here we report the developement of quantum dot sensitized solar cells (QDSCs) using colloidal PbS and PbSeS QDs and polysulfide electrolyte for high photocurrents. QDSCs have been prepared in a novel sensitizing way employing ... -
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, ... -
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 ... -
Enhanced operational stability through interfacial modification by active encapsulation of perovskite solar cells
Ghosh, Sudeshna; Singh, Roja; Subbiah, Anand S.; Boix, Pablo P; Mora-Sero, Ivan; Sarkar, Shaibal AIP Publishing (2020)Encapsulates are, in general, the passive components of any photovoltaic device that provides the required shielding from the externally stimulated degradation. Here we provide comprehensive physical insight depicting a ... -
Flash infrared annealing as a cost-effective and low environmental impact processing method for planar perovskite solar cells
Sanchez, Sandy; Vallés Pelarda, Marta; Alberola-Borràs, Jaume-Adrià; Vidal, Rosario; Jerónimo Rendón, José J.; Saliba, Michael; Boix, Pablo P; Mora-Sero, Ivan Elsevier (2019)For successful commercialization of perovskite solar cells, straightforward solutions in terms of environmental impact and economic feasibility are still required. Flash Infrared Annealing (FIRA) is a rapid method to ... -
From Flat to Nanostructured Photovoltaics: Balance between Thickness of the Absorber and Charge Screening in Sensitized Solar Cells
Fabregat-Santiago, Francisco; Bisquert, Juan; Mora-Sero, Ivan; Boix, Pablo P; Yong, Hui Lee; Sang, Hyuk Im; Sang, Il Seok American Chemical Society (2012-01)Nanoporous metal oxide electrodes provide a high internal area for dye anchoring in dye-sensitized solar cells, but the thickness required to extinguish the solar photons also enhances recombination at the TiO2/electrolyte ... -
High performing PbS Quantum Dot Sensitized Solar Cells exceeding 4% efficiency: The role of metal precursor in the electron injection and charge separation
González Pedro, Victoria; Sima, Cornelia; Marzari, Gabriela; Boix, Pablo P; Gimenez, Sixto; Qing, Shen; Dittrich, Thomas; Mora-Sero, Ivan Royal Society of Chemistry (2013)Here we report the preparation of high performance Quantum Dot Sensitized Solar Cells (QDSCs) based on PbS–CdS co-sensitized nanoporous TiO2 electrodes. QDs were directly grown on the TiO2 mesostructure by the Successive ... -
Hole Transport and Recombination in All-Solid Sb2S3-Sensitized TiO2 Solar Cells Using CuSCN As Hole Transporter
Boix, Pablo P; Larramona, Gerardo; Jacob, Alain; Delatouche, Bruno; Mora-Sero, Ivan; Bisquert, Juan American Chemical Society (2012)All-solid semiconductor-sensitized solar cells lack models allowing their characterization in terms of the fundamental processes of charge transport and recombination. Nanostructured TiO 2/Sb 2S 3/CuSCN solar cells were ... -
How the Charge-Neutrality Level of Interface States Controls Energy Level Alignment in Cathode Contacts of Organic Bulk-Heterojunction Solar Cells
Garcia-Belmonte, Germà; Bisquert, Juan; Guerrero, Antonio; Ripollés Sanchis, Teresa; Marchesi, Luis F.; Boix, Pablo P; Ruiz Raga, Sonia American Chemical Society (2012-04)Electronic equilibration at the metal–organic interface, leading to equalization of the Fermi levels, is a key process in organic optoelectronic devices. How the energy levels are set across the interface determines carrier ... -
Impedance analysis of perovskite solar cells: a case study
Contreras-Bernal, Lidia; Ramos-Terrón, Susana; Riquelme, Antonio; Boix, Pablo P; Idígoras, Jesús; Mora-Sero, Ivan; Anta, Juan A. Royal Society of Chemistry (2019)Metal halide perovskites are mixed electronic-ionic semiconductors with an extraordinary rich optoelectronic behavior and the capability to function very efficiently as active layers in solar cells, with a record efficiency ... -
Kinetics of occupancy of defect states in poly(3-hexylthiophene): fullerene solar cells
Garcia-Belmonte, Germà; Boix, Pablo P; Ajuria, Jon; Etxebarria, Ikerne; Palacios, Roberto Elsevier (2012-01)Energetics and kinetics of defects in the effective band gap of organic bulk heterojunctions are determined by means of capacitance methods. The technique consists of calculating the junction capacitance derivative with ... -
Multicomponent Approach for Stable Methylammonium-Free Tin–Lead Perovskite Solar Cells
Turren Cruz, Silver Hamill; Pascual, Jorge; Hu, Shuaifeng; Sanchez-Diaz, Jesus; Galve Lahoz, Sergio; Liu, Wentao; Hempel, Wolfram; Chirvony, Vladimir; Martinez-Pastor, Juan P.; Boix, Pablo P; Wakamiya, Atsushi; Mora-Sero, Ivan American Chemical Society (2024-02-09)Mixed tin–lead perovskites suffer from several degradation pathways that hinder their effective implementation in tandem photovoltaic technologies. The main challenge involves removing the thermally unstable methylammonium ... -
Oxygen doping-induced photogeneration loss in P3HT:PCBM solar cells
Garcia-Belmonte, Germà; Ripollés Sanchis, Teresa; Guerrero, Antonio; Boix, Pablo P; Marchesi, Luis F.; Pereira, Ernesto C. Elsevier (2012-05)This work investigates the loss in performance induced by molecular oxygen in bulk heterojunction solar cells. We observe that upon exposure to molecular oxygen both formation of P3HT+:O2− complex and metal oxidation at ... -
Perovskite Thin Single Crystal for a High Performance and Long Endurance Memristor
Fernandez-Guillen, Ismael; Aranda Alonso, Clara; Franco Betancur, Pablo; Vallés-Pelarda, Marta; Momblona, Cristina; Ripolles, Teresa S.; Abargues, Rafael; Boix, Pablo P Wiley (2024)Metal halide perovskites (MHPs) exhibit electronic and ionic characteristics suitable for memristors. However, polycrystalline thin film perovskite memristors often suffer from reliability issues due to grain boundaries, ... -
Photocurrent enhancement in dye-sensitized photovoltaic devices with titania–graphene composite electrodes
Durantini, Javier; Boix, Pablo P; Gervaldo, Miguel; Morales, Gustavo M.; Otero, Luis; Bisquert, Juan; Barea, Eva M Elsevier (2012)Photovoltaic performance of dye-sensitized solar cell (DSC) devices based on a new titania–graphene paste has been investigated using Impedance Spectroscopy (IS) technique. The results provide key information about device ... -
Photonic Processing of MAPbI3 Films by Flash Annealing and Rapid Growth for High-Performance Perovskite Solar Cells
Serafini, Patricio; Boix, Pablo P; Barea, Eva M; Edvinson, Tomas; Sánchez, Sandy; Mora-Sero, Ivan Wiley (2022-10-06)Defects in polycrystalline halide perovskite films can cause a decrease of the solar cell photoconversion efficiency and stability. The perovskite film enhanced during crystal growth by controlling the processing method ... -
Recombination in Organic Bulk Heterojunction Solar Cells: Small Dependence of Interfacial Charge Transfer Kinetics on Fullerene Affinity
Guerrero, Antonio; Marchesi, Luis F.; Boix, Pablo P; Bisquert, Juan; Garcia-Belmonte, Germà American Chemical Society (2012)We investigate the causes for obtaining higher open-circuit voltage in solar cells that use a fullerene with a smaller electron affinity. Using impedance spectroscopy technique, we show that the change of fullerene LUMO ... -
Sb2S3-Sensitized Photoelectrochemical Cells: Open Circuit Voltage Enhancement through the Introduction of Poly-3-hexylthiophene Interlayer
Heo, Jin Hyuck; Im, Sang Hyuk; Kim, Hi-jung; Boix, Pablo P; Lee, Suk Joong; Seok, Sang Il; Mora-Sero, Ivan; Bisquert, Juan American Chemical Society (2012)The Sb2S3-sensitized photoelectrochemical cells (Sb2S3–SPECs) in cobalt electrolyte were fabricated by depositing Sb2S3 on the macroporous TiO2 nanorods electrodes and consecutively spin-coating P3HT (Poly-3-hexylthiophene) ...