Charge Carriers Are Not Affected by the Relatively Slow-Rotating Methylammonium Cations in Lead Halide Perovskite Thin Films [PDF]
Journal of Physical Chemistry Letters, 2019 Recently, several studies have investigated dielectric properties as a possible origin of the exceptional optoelectronic properties of metal halide perovskites (MHPs). In this study we investigated the temperature-dependent dielectric behavior of different MHP films at different frequencies.
Valentina M Caselli +2 more
exaly +9 more sources
How Methylammonium Cations and Chlorine Dopants Heal Defects in Lead Iodide Perovskites [PDF]
Advanced Energy Materials, 2018 AbstractLead tri‐iodide methylammonium (MAPbI3) perovskite polycrystalline materials show complex optoelectronic behavior, largely because their 3D semiconducting inorganic framework is strongly perturbed by the organic cations and ubiquitous structural or chemical inhomogeneities.
Guangjun Nan +2 more
exaly +3 more sources
PROPRIEDADES E AVALIAÇÃO CATALÍTICA DA ZEÓLITA X NANOMÉTRICA CONTENDO CÁTIONS METILAMÔNIO
Química Nova, 2016 The reduction of zeolite particle is one of the main features currently searched; it is due to the catalytic gains that these materials come in some reactions.
João G. P. Vicente +2 more
doaj +2 more sources
Coupling Methylammonium and Formamidinium Cations with Halide Anions: Hybrid Orbitals, Hydrogen Bonding, and the Role of Dynamics [PDF]
Journal of Physical Chemistry C, 2021 The electronic structures of four precursors for organic–inorganic hybrid perovskites, namely, methylammonium chloride and iodide, as well as formamidinium bromide and iodide, are investigated by X-ray emission (XE) spectroscopy at the carbon and nitrogen K-edges. The XE spectra are analyzed based on density functional theory calculations.
C Kamal +2 more
exaly +6 more sources
Real-Time Observation of Organic Cation Reorientation in Methylammonium Lead Iodide Perovskites [PDF]
Journal of Physical Chemistry Letters, 2015 The introduction of a mobile and polarized organic moiety as a cation in 3D lead-iodide perovskites brings fascinating optoelectronic properties to these materials. The extent and the time scales of the orientational mobility of the organic cation and the molecular mechanism behind its motion remain unclear, with different experimental and ...
Artem A Bakulin +2 more
exaly +5 more sources
Synthesis, Structure, and Optoelectronic Properties of a Hybrid Organic–Inorganic Perovskite with a Monoethanolammonium Cation MAxMEA1−xPbI3 [PDF]
NanomaterialsHybrid organic–inorganic perovskites have emerged as promising materials for next-generation optoelectronic devices owing to their tunable properties and low-cost fabrication.
Andrey Ryabko +10 more
doaj +2 more sources
Synthesis and Characterization of New Copper(II) Coordination Compounds with Methylammonium Cations
InorganicsWe synthesized four new copper(II) complexes with acetato and chlorido ligands and methylammonium (MA), dimethylammonium (DMA), and tetramethylammonium (TMA) counterions: (MA)4[Cu2Ac4Cl2]Cl2·2H2O (1), (DMA)2[Cu2Ac4Cl2] (2), (DMA)4[Cu2Ac4Cl2]Cl2·2H2O (3),
Amalija Golobič +5 more
doaj +2 more sources
Tungsten oxide nanocrystals doped with interstitial methylammonium cations
NanoscaleThe first colloidal synthesis of tungsten oxide nanocrystals doped with large organic cations is presented. The colloids show strong plasmonic properties in the near infrared.
Lesly V Meléndez +2 more
exaly +4 more sources
A Solid-state NMR Study of Dimethylamine Cation-doped MAPbBr3 Perovskite Materials
Chinese Journal of Magnetic Resonance, 2023 In this paper, 2H nuclear magnetic resonance (NMR) was performed to study the motions of the embedded cations in the cation-doped lead bromide perovskite (MA0.6DMA0.4PbBr3).
MA Kaiyang +3 more
doaj +1 more source
Nature Communications, 2022 The reorientational dynamics of A-site cations in two-dimensional organic-inorganic hybrid perovskites play an important role in determining their physical properties. Here the authors use solid state NMR and isotope labelling to reveal multiple modes of
Cheng-Chieh Lin +13 more
doaj +1 more source