Video Experimental Relacionado
Updated: Jan 30, 2026

08:43
Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
Published on: November 7, 2016
8.4K
Ingeniería cristalina de acenos que contienen bifenileno para semiconductores orgánicos de alta movilidad
Jinlian Wang, Ming Chu, Jian-Xun Fan1,2
1Institute of Theoretical Chemistry, Laboratory of Theoretical and Computational Chemistry , Jilin University , Changchun 130023 , China.
Journal of the American Chemical Society
|January 31, 2019
Resumen
Nuevo bisnafto[2
Área de la Ciencia:
- Productos electrónicos orgánicos
- Ciencias de los materiales
- Física del estado sólido
Sus antecedentes:
- Los derivados de bisnafto[2',3':3,4]ciclobuto[1,2-b:1',2'-i]antraceno (BNCBA) se exploran por sus propiedades semiconductoras.
- El empaque molecular influye significativamente en el transporte de carga en semiconductores orgánicos.
Objetivo del estudio:
- Para sintetizar y caracterizar los nuevos derivados de BNCBA.
- Investigar el impacto de la longitud de la cadena de alquilo en el empaque molecular de BNCBA y el comportamiento del semiconductor.
- Evaluar las propiedades de transporte de carga de estos nuevos materiales.
Principales métodos:
- Síntesis de derivados de BNCBA con varios sustituyentes alquilo.
- Difracción de rayos X de un solo cristal para determinar el empaque molecular.
- Cálculos teóricos de la movilidad del portador de carga.
- Fabricación y caracterización de transistores de película delgada (TFT) procesados en solución.
Principales resultados:
- La sustitución de alquilo modifica efectivamente el apilamiento de π-π en los cristales BNCBA.
- El derivado tetrahexyl BNCBA muestra un arreglo de apilamiento en zigzag π-π inusual.
- Los cálculos teóricos de movilidad se correlacionan con las características de transporte de carga observadas.
- Todos los derivados de BNCBA exhiben un comportamiento de semiconductor de tipo p en TFT.
Conclusiones:
- Los derivados de BNCBA son semiconductores orgánicos de tipo p prometedores.
- La adaptación del empaque molecular a través de la sustitución de alquilo es una estrategia viable para mejorar el rendimiento de los semiconductores.
- El derivado tetrahexil alcanza una alta movilidad de efecto de campo de 2,9 cm2/Vs.
Más Videos Relacionados
Videos de Conceptos Relacionados
Semiconductors
1.5K
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
1.5K
Types of Semiconductors
1.4K
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
1.4K
What is Genetic Engineering?
80.1K
Overview
80.1K
Metal-Semiconductor Junctions
968
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
968
Ionic Crystal Structures
17.0K
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...
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...
17.0K
Crystal Growth: Principles of Crystallization
4.9K
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
4.9K

