Iónicos en estado sólido de perovskitas halogenadas híbridas
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Ver abstracta en PubMed
Resumen
Este resumen es generado por máquina.Muchas "anomalías" en las perovskitas halogenadas se explican por los iónicos en estado sólido. Esta perspectiva utiliza la caja de herramientas iónica de estado sólido para comprender y mejorar estos materiales fotovoltaicos.
Área De La Ciencia
- Ciencias de los materiales
- Química del estado sólido
- Las instalaciones fotovoltaicas
Sus Antecedentes
- Las perovskitas de halogenuros fotoactivos son materiales clave en la energía fotovoltaica.
- Las anomalías observadas en sus fenómenos de larga duración y baja frecuencia son generalizadas.
- Estos fenómenos a menudo se consideran desafíos inesperados en el campo.
Objetivo Del Estudio
- Reevaluar las anomalías observadas en las perovskitas halogenadas desde una perspectiva iónica en estado sólido.
- Demostrar la utilidad de la caja de herramientas de iones en estado sólido para comprender estos materiales.
- Explorar métodos para acondicionar y mejorar las propiedades de la perovskita halogenada.
Principales Métodos
- Análisis de las propiedades conductoras mixtas de las perovskitas halogenadas.
- Aplicación de los principios iónicos del estado sólido.
- Consideración de las propiedades de la masa de equilibrio.
- Investigación de los efectos interfaciales.
- Examen de los efectos de la luz sobre la conductividad mixta.
Principales Resultados
- Muchas "anomalías" en las perovskitas halogenadas son predecibles utilizando iónicos en estado sólido.
- La naturaleza de conducción mixta de estos materiales es fundamental para su comportamiento.
- La iónica de estado sólido proporciona un marco para comprender los efectos interfaciales y inducidos por la luz.
Conclusiones
- La iónica de estado sólido ofrece una lente poderosa para interpretar y abordar los desafíos en la fotovoltaica de perovskita halogenada.
- La naturaleza conductiva mixta y los fenómenos de transporte iónico asociados son cruciales.
- Este enfoque puede guiar las estrategias para el acondicionamiento de materiales y la mejora del rendimiento.
Contact us Si estos videos no son relevantes.
Contact us Si estos videos no son relevantes.
Videos de Conceptos Relacionados
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
When soluble salts dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution; this process represents a physical change known as dissociation. Potassium chloride (KCl) is an example...
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....