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| Naji, M. |
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Mora-Sero, Ivan
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Topics
Publications (64/64 displayed)
- 2024Origin of discrete donor–acceptor pair transitions in 2D Ruddlesden–Popper perovskitescitations
- 2024Origin of discrete donor–acceptor pair transitions in 2D Ruddlesden–Popper perovskitescitations
- 2024Inkjet-Printed Red-Emitting Flexible LEDs Based on Sustainable Inks of Layered Tin Iodide Perovskitecitations
- 2024Polymeric ionic liquid-based formulations for the fabrication of highly stable perovskite nanocrystal composites for photocatalytic applicationscitations
- 2024Tuning the Optical and Structural Properties of Halide Perovskite by PbS Quantum Dot Additive Engineering for Enhanced Photovoltaic Performances
- 2024Thermal-Carrier-Escape Mitigation in a Quantum-Dot-In-Perovskite Intermediate Band Solar Cell via Bandgap Engineeringcitations
- 2024Synthesis of Hybrid Tin‐Based Perovskite Microcrystals for LED Applicationscitations
- 2024Enabling white color tunability in complex 3D-printed composites by using lead-free self-trapped exciton 2D perovskite/carbon quantum dot inkscitations
- 2024Waveguide Amplifiers and Lasers Based on FASnI3 Perovskite Thin Films
- 2024Spin Coherence and Relaxation Dynamics of Localized Electrons and Holes in FAPbI3 Filmscitations
- 2024Inkjet‐Printed Red‐Emitting Flexible LEDs Based on Sustainable Inks of Layered Tin Iodide Perovskitecitations
- 2023Superradiance Emission and Its Thermal Decoherence in Lead Halide Perovskites Superlatticescitations
- 2023Superradiance Emission and Its Thermal Decoherence in Lead Halide Perovskites Superlatticescitations
- 2023Polymeric ionic liquid-based formulations for the fabrication of highly stable perovskite nanocrystal composites for photocatalytic applicationscitations
- 2023Unusual Spectrally Reproducible and High Q-Factor Random Lasing in Polycrystalline Tin Perovskite Filmscitations
- 2023Lead-Free Halide Perovskite Materials and Optoelectronic Devices: Progress and Prospectivecitations
- 2023Stabilization of Black FAPbI3 Perovskite by Interaction with the Surface of the Polymorphic Phase α-PbOcitations
- 2023Enhanced spontaneous emission of CsPbI3 perovskite nanocrystals using a hyperbolic metamaterial modified by dielectric nanoantennacitations
- 2022Tin perovskite solar cells with >1,300 h of operational stability in N2 through a synergistic chemical engineering approachcitations
- 2022Continuous-Flow Synthesis of Orange Emitting Sn(II)-Doped CsBr Materialscitations
- 2022Suppressing the Formation of High n-Phase and 3D Perovskites in the Fabrication of Ruddlesden-Popper Perovskite Thin Films by Bulky Organic Cation Engineeringcitations
- 2022Thermodynamic stability screening of IR-photonic processed multication halide perovskite thin filmscitations
- 2022Application of Halide Perovskite Nanocrystals in Solar-Driven Photo(electro)Catalysiscitations
- 2022Directional and Polarized Lasing Action on Pb-free FASnI3 Integrated in Flexible Optical Waveguidecitations
- 2021Homogeneous and inhomogeneous broadening in single perovskite nanocrystals investigated by micro-photoluminescencecitations
- 2021Continuous-Flow Synthesis of Orange Emitting Sn(II)-Doped CsBr Materialscitations
- 2021State of the Art and Prospects for Halide Perovskite Nanocrystalscitations
- 2021Deciphering the Role of Quantum Dots Size in the Ultrafast Charge Carrier Dynamics at the Perovskite-Quantum Dots Interfacecitations
- 2021A first-principles study of the stability, electronic structure, and optical properties of halide double perovskite Rb2Sn1xTexI6 for solar cell applicationscitations
- 2021Purcell Enhancement and Wavelength Shift of Emitted Light by CsPbI3 Perovskite Nanocrystals Coupled to Hyperbolic Metamaterialscitations
- 2021Interface Engineering in Perovskite Solar Cells by Low Concentration of Phenylethyl Ammonium Iodide Solution in the Antisolvent Stepcitations
- 2021Inhomogeneous Broadening of Photoluminescence Spectra and Kinetics of Nanometer-Thick (Phenethylammonium)2PbI4 Perovskite Thin Films: Implications for Optoelectronicscitations
- 2020Stabilization of Black Perovskite Phase in FAPbI3 and CsPbI3citations
- 2020Inhibition of light emission from the metastable tetragonal phase at low temperatures in island-like films of lead iodide perovskitescitations
- 2020Interpretation of the photoluminescence decay kinetics in metal halide perovskite nanocrystals and thin polycrystalline filmscitations
- 2020Chemi-Structural Stabilization of Formamidinium Lead Iodide Perovskite by Using Embedded Quantum Dotscitations
- 2020Chemi-Structural Stabilization of Formamidinium Lead Iodide Perovskite by Using Embedded Quantum Dotscitations
- 2020Analysis of the UV ozone-treated SnO2 electron transporting layer in planar perovskite solar cells for high performance and reduced hysteresiscitations
- 2020Structural and Electrical Investigation of Cobalt-Doped NiOx/Perovskite Interface for Efficient Inverted Solar Cellscitations
- 2019Outstanding nonlinear optical properties of methylammonium- and Cs-PbX3 (X = Br, I, and Br–I) perovskites: Polycrystalline thin films and nanoparticlescitations
- 2019Outstanding nonlinear optical properties of methylammonium- and Cs-PbX3 (X = Br, I, and Br–I) perovskites: Polycrystalline thin films and nanoparticles
- 2019Chemi-Structural Stabilization of Formamidinium Lead Iodide Perovskite by Using Embedded Quantum Dots for High-Performance Solar Cells
- 2019Photocatalytic and Photoelectrochemical Degradation of Organic Compounds with All-Inorganic Metal Halide Perovskite Quantum Dotscitations
- 2019Structural characterization of bulk and nanoparticle lead halide perovskite thin films by (S)TEM techniquescitations
- 2019Impedance analysis of perovskite solar cells: a case studycitations
- 2019Interaction between Colloidal Quantum Dots and Halide Perovskites: Looking for Constructive Synergiescitations
- 2018Perovskite-Polymer Blends Influencing Microstructures, Nonradiative Recombination Pathways, and Photovoltaic Performance of Perovskite Solar Cellscitations
- 2018Perovskite-Quantum Dots Interface: Deciphering its Ultrafast Charge Carrier Dynamicscitations
- 2017Transformation of PbI2, PbBr2 and PbCl2 salts into MAPbBr3 perovskite by halide exchange as an effective method for recombination reductioncitations
- 2017Electron Transport Layer-Free Solar Cells Based on Perovskite? Fullerene Blend Films with Enhanced Performance and Stabilitycitations
- 2017Enhanced Photovoltaic Performance of Mesoscopic Perovskite Solar Cells by Controlling the Interaction between CH3NH3PbI3 Films and CsPbX3 Perovskite Nanoparticlescitations
- 2016Effect of Different Sensitization Technique on the Photoconversion Efficiency of CdS Quantum Dot and CdSe Quantum Rod Sensitized TiO2 Solar Cellscitations
- 2016Effect of different lead precursors on perovskite solar cell performance and stabilitycitations
- 2016Single Step Deposition of an Interacting Layer of Perovskite Matrix with Embedded Quantum Dotscitations
- 2016High reduction of interfacial charge recombination in colloidal quantum dot solar cells by metal oxide surface passivationcitations
- 2016Classification of solar cells according to mechanisms of charge separation and charge collectioncitations
- 2015General Working Principles of CH3NH3PbX3 Perovskite Solar Cellscitations
- 2015New iridium complex as additive to the spiro-OMeTAD in perovskite solar cells with enhanced stabilitycitations
- 2014Recombination in Quantum Dot Sensitized Solar Cellscitations
- 2014Effect of organic and inorganic passivation in quantum-dot-sensitized solar cellscitations
- 2014Ultrafast characterization of the electron injection from CdSe quantum dots and dye N719 co-sensitizers into TiO2 using sulfide based ionic liquid for enhanced long term stabilitycitations
- 2013Interfacial engineering of quantum dot-sensitized TiO2 fibrous electrodes for futuristic photoanodes in photovoltaic applicationscitations
- 2012Panchromatic sensitized solar cells based on metal sulfide quantum dots grown directly on nanostructured TiO2 electrodescitations
- 2011Impedance spectroscopy of thin-film CdTe/CdS solar cells under varied illuminationcitations
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article
Origin of discrete donor–acceptor pair transitions in 2D Ruddlesden–Popper perovskites
Abstract
<jats:p>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 also promising active materials to be included in devices working at room temperature. In this work, we study the presence of very narrow and spatially localized optical transitions in 2D lead halide perovskites by μ-photoluminescence and time-decay measurements. These discrete optical transitions are characterized by sub-millielectronvolt linewidths (≃120μeV) and long decay times (5–8 ns). X-ray photoemission and density-functional theory calculations have been employed to investigate the chemical origin of electronic states responsible of these transitions. The association of phenethylammonium with methylammonium cations into 2D Ruddlesden–Popper perovskites, (PEA)2(MA)n−1PbnI3n+1, particularly in phases with n≥2, has been identified as a mechanism of donor–acceptor pair (DAP) formation, corresponding to the displacement of lead atoms and their replacement by methylammonium. Ionized DAP recombination is identified as the most likely physical source of the observed discrete optical emission lines. The analysis of the experimental data with a simple model, which evaluates the Coulombic interaction between ionized acceptors and donors, returns a donor in Bohr radius of the order of ≃10 nm. The analysis of the spectral and electronic characteristics of these single donor–acceptor states in 2D perovskites is of particular importance both from the point of view of fundamental research, as well as to be able to link the emission of these states with new optoelectronic applications that require long-range optically controllable interactions.</jats:p>