Now showing items 61-80 of 134

    • openAccess   Interaction between Colloidal Quantum Dots and Halide Perovskites: Looking for Constructive Synergies 

      Ngo, Thi Tuyen; Mora-Sero, Ivan American Chemical Society (2019-02-19)
      Colloidal quantum dots (QDs) have received extensive attention during the last few decades because of their amazing properties emerging from quantum confinement. In parallel, halide perovskites have attracted attention ...
    • openAccess   Interface Engineering in Perovskite Solar Cells by Low Concentration of Phenylethyl Ammonium Iodide Solution in the Antisolvent Step 

      Ripolles, Teresa S.; Serafini, Patricio; Redondo Obispo, Carlos Daniel; Climent-Pascual, Esteban; Masi, Sofia; Mora-Sero, Ivan; Coya, Mª del Carmen Wiley (2021-12-03)
      In spite of the outstanding properties of metal halide perovskites, its polycrystallinenature induces a wide range of structural defects that results in charge losses thataffect thefinal device performance and stability. ...
    • openAccess   Interfaces in Perovskite Solar Cells 

      Fakharuddin, Azhar; Schmidt-Mende, Lukas; Garcia-Belmonte, Germà; Jose, Rajan; Mora-Sero, Ivan Wiley (2017-11-22)
      Rapid improvement in photoconversion efficiency (PCE) of solution processable organometallic hybrid halide based perovskite solar cells (PSCs) have taken the photovoltaic (PV) community with a surprise and has extended ...
    • openAccess   Interpretation of the photoluminescence decay kinetics in metal halide perovskite nanocrystals and thin polycrystalline films 

      Chirvony, Vladimir; Sekerbayev, Kairolla; Pashaei Adl, Hamid; Suárez, Isaac; Taurbayev, Yerzhan; Gualdrón Reyes, Andrés Fabián; Mora-Sero, Ivan; Martínez-Pastor, Juan P. Elsevier (2020-05)
      In this paper we present critical analysis of different points of view on interpretation of the photoluminescence (PL) decay kinetics in lead halide perovskites prepared in the form of well passivated nanocrystals (PNCs) ...
    • openAccess   Large-Area, Flexible, Lead-Free Sn-Perovskite Solar Modules 

      Żuraw, Wiktor; Vinocour Pacheco, Felipe Andres; Sanchez-Diaz, Jesus; Przypis, Lukasz; Mejía Escobar, Mario Alejandro; Almosni, Samy; Vescio, Giovanni; Martínez-Pastor, Juan P.; Garrido, Blas; Kudrawiec, Robert; Mora-Sero, Ivan; Öz, Senol American Chemical Society (2023)
      For the first time, large-area, flexible organic–inorganic tin perovskite solar modules are fabricated by means of an industry-compatible and scalable blade-coating technique. An 8-cell interconnected mini module with ...
    • openAccess   Lead-Free Halide Perovskite Materials and Optoelectronic Devices: Progress and Prospective 

      López-Fernández, Iago; Valli, Donato; Wang, Chun-Yun; Samanta, Subarna; Okamoto, Takuya; Huang, Yi-Teng; Sun, Kun; Liu, Yang; Chirvony, Vladimir; Patra, Avijit; Zito, Juliette; De Trizio, Luca; Gaur, Deepika; Sun, Hong-Tao; Xia, Zhiguo; Li, Xiaoming; Zeng, Haibo; Mora-Sero, Ivan; Pradhan, Narayan; Martínez-Pastor, Juan P.; Müller-Buschbaum, Peter; Biju, Vasudevanpillai; Debnath, Tushar; Saliba, Michael; Debroye, Elke; Hoye, Robert; Infante, Ivan; Manna, Liberato; Polavarapu, Lakshminarayana Wiley (2023)
      Halide perovskites, in the form of thin films and colloidal nanocrystals, have recently taken semiconductor optoelectronics research by storm, and have emerged as promising candidates for high-performance solar cells, ...
    • openAccess   Ligand & band gap engineering: tailoring the protocol synthesis for achieving high-quality CsPbI3 quantum dots 

      Hassanabadi, Ehsan; Latifi, Masoud; Gualdrón Reyes, Andrés Fabián; Masi, Sofia; YOON, SEOG JOON; Poyatos, Macarena; Julian-Lopez, Beatriz; Mora-Sero, Ivan Royal Society of Chemistry (2020)
      Hot-injection has become the most widespread method used for the synthesis of perovskite quantum dots (QDs) with enormous interest for application in optoelectronic devices. However, there are some aspects of the chemistry ...
    • openAccess   Mechanism of carrier accumulation in perovskite thin-absorber solar cells 

      Mora-Sero, Ivan; González Pedro, Victoria; Fabregat-Santiago, Francisco; Juarez-Perez, Emilio J.; Kim, Hui-Seon; Park, Nam-Gyu; Bisquert, Juan Nature Publishing Group (2013)
      Photovoltaic conversion requires two successive steps: accumulation of a photogenerated charge and charge separation. Determination of how and where charge accumulation is attained and how this accumulation can be identified ...
    • openAccess   Mechanisms of Spontaneous and Amplified Spontaneous Emission in CH3NH3PbI3 Perovskite Thin Films Integrated in an Optical Waveguide 

      Suárez, Isaac; Juarez-Perez, Emilio J.; Chirvony, Vladimir; Mora-Sero, Ivan; Martínez-Pastor, Juan P. American Physical Society (2020)
      In this paper, the physical mechanisms responsible for optical gain in CH3NH3PbI3 (MAPI) polycrystalline thin films are investigated experimentally and theoretically. Waveguide structures composed by a MAPI film embedded ...
    • openAccess   Microwave-Mediated Synthesis of Lead-Free Cesium Titanium Bromide Double Perovskite: A Sustainable Approach 

      Reyes-Francis, Emmanuel; Echeverría-Arrondo, Carlos; Esparza, Diego; López-Luke, Tzarara; Soto-Montero, Tatiana; Morales-Masis, Monica; Turren Cruz, Silver Hamill; Mora-Sero, Ivan; Julian-Lopez, Beatriz American Chemical Society (2024-02-02)
      Theoretical studies have identified cesium titanium bromide (Cs2TiBr6), a vacancy-ordered double perovskite, as a promising lead-free and earth-abundant candidate to replace Pb-based perovskites in photovoltaics. Our ...
    • openAccess   Morphology and Band Structure of Orthorhombic PbS Nanoplatelets: An Indirect Band Gap Material 

      Macias-Pinilla, David F.; Echeverría-Arrondo, Carlos; Gualdrón Reyes, Andrés Fabián; Agouram, Said; Muñoz-Sanjosé, Vicente; Planelles, Josep; Mora-Sero, Ivan; Climente, Juan I. American Chemical Society (2021-01-12)
      PbS quantum dots and nanoplatelets (NPLs) are of enormous interest in the development of optoelectronic devices. However, some important aspects of their nature remain unclear. Recent studies have revealed that colloidal ...
    • openAccess   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 ...
    • openAccess   Nanoscale Perovskite‐Sensitized Solar Cell Revisited: Dye‐Cell or Perovskite‐Cell? 

      Yoo, So-Min; Lee, Seul-Yi; Velilla, Esteban; Kim, Myoung; Kim, Gitae; Shin, Taeho; Nazeeruddin, Mohammad Khaja; Mora-Sero, Ivan; Lee, Hyo Joong Wiley‐VCH Verlag (2020-03-20)
      A general and straightforward way of preparing few nanometer-sized well-separated MAPbIxBr3-x perovskite photosensitizers on the surface of ~1 μm thick mesoporous TiO2 photoanode was suggested via a two-step sequential ...
    • openAccess   Operation Mechanism of Perovskite Quantum Dot Solar Cells Probed by Impedance Spectroscopy 

      Zolfaghari, Zahra; Hassanabadi, Ehsan; Pitarch-Tena, Didac; YOON, SEOG JOON; Shariatinia, Zahra; van de Lagemaat, Jao; Luther, Joseph M.; Mora-Sero, Ivan American Chemical Society (2018)
      We fabricated perovskite quantum dot solar cells (PQDSCs) and varied the thickness of the QD layer by controlling the number of deposition cycles; the cells were systematically investigated with impedance spectroscopy. ...
    • openAccess   Optical Amplification in Hollow-Core Negative-Curvature Fibers Doped with Perovskite CsPbBr3 Nanocrystals 

      Navarro-Arenas, Juan; Suárez, Isaac; Martínez-Pastor, Juan P.; Ferrando, Albert; Gualdrón Reyes, Andrés Fabián; Mora-Sero, Ivan; Gao, Shou-Fei; Wang, Ying-Ying; Wang, Pu; Sun, Zhipei MDPI (2019)
      We report a hollow-core negative-curvature fiber (HC-NCF) optical signal amplifier fabricated by the filling of the air microchannels of the fiber with all-inorganic CsPbBr3 perovskite nanocrystals (PNCs). The optimum ...
    • openAccess   Optical Characterization of Lead-Free Cs2SnI6 Double Perovskite Fabricated from Degraded and Reconstructed CsSnI3 Films 

      López-Fraguas, Eduardo; Masi, Sofia; Mora-Sero, Ivan American Chemical Society (2019-12-02)
      Halide perovskites have experienced a huge development in the past years, but they still have two major challenges for their massive implantation: the long-term stability and the use of lead. One of the most obvious lead-free ...
    • openAccess   Optical Optimization of the TiO2 Mesoporous Layer in Perovskite Solar Cells by the Addition of SiO2 Nanoparticles 

      Aeineh, Naemeh; Castro-Méndez, Andrés-Felipe; Rodriguez-Cantó, Pedro J.; Abargues, Rafael; Hassanabadi, Ehsan; Suárez, Isaac; Behjat, Abbas; Ortiz, Pablo; Martínez-Pastor, Juan P.; Mora-Sero, Ivan American Chemical Society: (2018-08-23)
      In this work, SiO2 nanoparticles (NPs) were integrated into the mesoporous TiO2 layer of a perovskite solar cell to investigate their effect on cell performance. Different concentrations of SiO2/ethanol have been combined ...
    • openAccess   Optimizing Performance and Operational Stability of CsPbI3 Quantum-Dot-Based Light-Emitting Diodes by Interface Engineering 

      muhammed, kunnummal; Hassanabadi, Ehsan; Masi, Sofia; Gualdrón Reyes, Andrés Fabián; Franckevicius, Marius; Devižis, Andrius; Gulbinas, Vidmantas; Fakharuddin, Azhar; Mora-Sero, Ivan American Chemical Society (2020-07)
      Perovskite light-emitting diodes (PeLEDs) have emerged as a promising candidate for next-generation display technology and lighting applications owing to their high current efficiency, low operating voltage, narrow spectral ...
    • openAccess   Origin of discrete donor–acceptor pair transitions in 2D Ruddlesden–Popper perovskites 

      Gorji, Setatira; Krecmarova, Marie; Molina-Sánchez, Alejandro; Asensio, Maria C.; Gualdrón Reyes, Andrés Fabián; Rodríguez Romero, Jesús; Pashaei Adl, Hamid; Canet Albiach, Rodolfo Enrique; Schio, Luca; Tormen, Massimo; Floreano, Luca; Mora-Sero, Ivan; Martínez-Pastor, Juan P.; Sánchez Royo, Juan Francisco; Muñoz-Matutano, Guillermo American Institute of Physics (2024)
      Two-dimensional (2D) van der Waals nanomaterials have attracted considerable attention for potential use in photonic and light–matter applications at the nanoscale. Thanks to their excitonic properties, 2D perovskites are ...
    • openAccess   Outstanding nonlinear optical properties of methylammonium- and Cs-PbX3 (X = Br, I, and Br–I) perovskites: Polycrystalline thin films and nanoparticles 

      Suárez, Isaac; Vallés Pelarda, Marta; Gualdrón Reyes, Andrés Fabián; Mora-Sero, Ivan; Ferrando, Albert; Michinel, Humberto; Salgueiro, José Ramón; Martínez-Pastor, Juan P. AIP Publishing (2019)
      Metal Halide Perovskites (MHPs) have arisen as promising materials to construct cost-effective photovoltaic and light emission devices. The study of nonlinear optical properties of MHPs is necessary to get similar success ...