Results 171 to 180 of about 3,584 (216)

Anomalous X-ray diffraction on hybrid perovskite thin films: results and challenges. [PDF]

open access: yesJ Appl Crystallogr
Merten L   +8 more
europepmc   +1 more source

Exploring the Effects of the Guanidinium:Methylammonium Ratio on the Photophysical Dynamics of ⟨<i>n</i>⟩ = 5 ACI Perovskites. [PDF]

open access: yesJ Phys Chem C Nanomater Interfaces
Einhaus LM   +6 more
europepmc   +1 more source

Dissociation of Methylammonium Cations in Hybrid Organic–Inorganic Perovskite Solar Cells [PDF]

open access: yesNano Letters, 2016
Organic-inorganic lead perovskites have shown great promise as photovoltaic materials, and within this class of materials (CH3NH3)PbI3-xClx is of particular interest. Herein we use soft X-ray spectroscopy and density functional theory calculations to demonstrate that the methylammonium cations in a typical photovoltaic layer may dissociate into a ...
Weidong Xu, Lijia Liu, Baoquan Sun
exaly   +4 more sources

Unraveling the Influence of Solvent on Side Reactions between Formamidinium Lead Triiodide and Methylammonium Cations [PDF]

open access: yesJournal of the American Chemical Society
Formamidinium lead triiodide (FAPbI3) perovskite thin films are commonly deposited through a solution process, often incorporating a specific amount of methylammonium halide to stabilize the α-phase or enhance their crystallinity. The precursor solution for such coatings significantly influences the fabrication of perovskite solar cells (PSCs ...
Yonghui Lee, Sang Il Seok
exaly   +4 more sources
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Inhibiting the decomposition of methylammonium using cations with low deprotonation energy

Journal of Materials Chemistry A, 2022
CH3NH2 can be converted into the MA+ ion using cations with low deprotonation energy, suggesting that the decomposition of MA+ can be inhibited. Moreover, the MAPbI3 perovskites with H5O2 show excellent electronic structures and high efficiency.
Tingwei Zhou, Jiangzhao Chen
exaly   +2 more sources

Mechanism and Impact of Cation Polarization in Methylammonium Lead Iodide [PDF]

open access: yesThe Journal of Physical Chemistry C, 2018
Despite the intense research effort on metal halide perovskites, the fundamental correlation between the crystal structure and optoelectronic properties remains unclear. As many intriguing phenomena are expected to be based on the dipolar character of the rotating organic cations, an improved understanding of the material’s polarizability is of high ...
Susanne T. Birkhold   +6 more
openaire   +2 more sources

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