Video Experimental Relacionado
Updated: Jul 14, 2026
08:43
Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
Published on: November 7, 2016
Correlación entre la estructura cristalina y la movilidad en los transistores orgánicos de efecto de campo basados en
Marta Mas-Torrent1, Peter Hadley, Stefan T Bromley
1Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands. marta@qt.tn.tudelft.nl
Journal of the American Chemical Society
|July 9, 2004
Resumen
Los cristales únicos orgánicos de los derivados DT-TTF muestran una alta movilidad del portador de carga. La estructura cristalina tiene un impacto directo en las propiedades eléctricas, lo que permite un alto rendimiento, electrónica orgánica de bajo costo.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Electrónica orgánica y electrónica orgánica.
- Física del estado sólido Física del estado sólido
Sus antecedentes:
- Los transistores orgánicos de efecto de campo (OFET) son cruciales para la electrónica de bajo costo.
- Los derivados del diitiofeno-tetratiafulvaleno (DT-TTF) son semiconductores orgánicos muy prometedores.
- Estudios previos informaron de una alta movilidad en los cristales DT-TTF.
Objetivo del estudio:
- Investigar transistores orgánicos de efecto de campo monocristalino basados en materiales relacionados con DT-TTF.
- Para establecer una correlación entre la estructura cristalina y las características eléctricas.
- Explorar aplicaciones potenciales en electrónica de bajo costo.
Principales métodos:
- Fabricación de transistores orgánicos de efecto de campo monocristalino utilizando materiales relacionados con DT-TTF.
- Método de fundición por gota para la formación de cristales.
- Cálculo de las energías de reorganización molecular y las integrales de transferencia intermolecular.
Principales resultados:
- Se observó una clara correlación entre la estructura cristalina y las características eléctricas.
- Se lograron movilidades de portadores de carga de alto efecto de campo.
- Las movilidades más altas se informaron para los materiales orgánicos procesados en solución.
Conclusiones:
- La estructura cristalina es un factor clave que determina el rendimiento de los semiconductores orgánicos.
- Los derivados DT-TTF ofrecen una alta movilidad para la electrónica orgánica procesada en solución.
- Estos materiales son adecuados para el desarrollo de dispositivos electrónicos avanzados y rentables.
Videos de Conceptos Relacionados
02:58Crystal Field Theory - Octahedral Complexes
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
01:21Polymer Classification: Crystallinity
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
01:26Variables Affecting Phosphorescence and Fluorescence
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
01:19Crystal Density
The crystal lattice structure of a material allows us to determine how many molecules exist in its unit cell. With this information, alongside the unit-cell parameters - three distance parameters (a, b, c) and three angular parameters (α, β, γ).Density (ρ) = (Z × M) / (a × b × c × NA)where:Z is the number of formula units per unit cellM is the molar mass of the substancea, b, and c are the edge lengths of the unit cellNA is Avogadro’s numberFor a simple cubic lattice, atoms are located only at...
01:26Imperfections in Crystal Structure: Stoichiometric Point Defects
Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...