Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

P-N junction01:11

P-N junction

620
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
620
Biasing of P-N Junction01:16

Biasing of P-N Junction

749
The operation of a p-n junction diode involves various biasing conditions, including forward bias, reverse bias, and equilibrium.
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
749
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

437
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...
437
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

315
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
315
Bipolar Junction Transistor01:22

Bipolar Junction Transistor

885
Bipolar Junction Transistors (BJTs) are essential elements in electronic circuits, playing a crucial role in the functionality of amplifiers, memories, and microprocessors. These transistors can be designed as NPN or PNP based on their doping patterns. They consist of three layers: the emitter, base, and collector. The configuration of these layers and their respective doping levels—with N-type or P-type impurities—define the transistor's type and its operational...
885
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

6.6K
Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
6.6K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Initial cardioplegia dose indexed to left ventricular mass in mitral valve surgery.

Perfusion·2026
Same author

TACE Combined with Ralox-HAIC (Oxaliplatin Puls Raltitrexed) and System Therapy in Patients with Unresectable Hepatocellular Carcinoma.

Journal of hepatocellular carcinoma·2026
Same author

A "Three-in-One" AuNRs@ZIF-8/AuNPs Nanoplatform: Nanoenzyme-Mediated SERS-Colorimetric Bimodal Detection of Intracellular Glutathione and Photothermal Therapy.

ACS applied materials & interfaces·2026
Same author

Central nervous system multiple myeloma: An update for 2026.

Annals of hematology·2026
Same author

Entropy-Stabilized High-Entropy Sulfide Anodes for Fast-Charging and Long-Life Sodium-Ion Batteries.

ACS applied materials & interfaces·2026
Same author

Dissipative quantum geometric phase in the spin-boson system.

The Journal of chemical physics·2026

Video Experimental Relacionado

Updated: Aug 24, 2025

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.8K

Transporte de carga modulado dipolo a través de uniones de una sola molécula de tipo PNP

Mingyao Li1, Huanyan Fu1,2, Boyu Wang2

  • 1Beijing National Laboratory for Molecular Sciences, National Biomedical Imaging Center, College of Chemistry and Molecular Engineering, Peking University, 292 Chengfu Road, Haidian District, Beijing100871, P. R. China.

Journal of the American Chemical Society
|October 24, 2022
PubMed
Resumen

Los investigadores crearon una nueva unión de una sola molécula de tipo PNP utilizando moléculas de azuleno. Este avance permite un control preciso sobre el transporte de carga y las barreras potenciales en la electrónica molecular.

Más Videos Relacionados

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.8K
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

9.7K

Videos de Experimentos Relacionados

Last Updated: Aug 24, 2025

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.8K
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.8K
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

9.7K

Área de la Ciencia:

  • La electrónica molecular
  • Física de la materia condensada
  • Ciencias de los materiales

Sus antecedentes:

  • Las estructuras PNP son cruciales para los dispositivos electrónicos y optoelectrónicos.
  • Comprender el comportamiento de una sola molécula es clave para avanzar en la electrónica molecular.

Objetivo del estudio:

  • Construir y caracterizar una unión de una sola molécula de tipo PNP.
  • Para investigar el papel de los dipolos moleculares intrínsecos en el transporte de carga.
  • Para explorar la ingeniería de la banda de energía a nivel de una sola molécula.

Principales métodos:

  • Diseño de una molécula de azuleno de espalda a espalda con momentos de dipolo opuestos.
  • Fabricación de uniones de una sola molécula.
  • Realización de estudios teóricos y experimentales sobre el transporte de carga.

Principales resultados:

  • Construcción exitosa de una unión de una sola molécula de tipo PNP.
  • Demostración de que los dipolos moleculares intrínsecos pueden ajustar el transporte de carga.
  • Observación de las barreras potenciales ajustables en la unión molecular.

Conclusiones:

  • Los dipolos intrínsecos ofrecen un control efectivo sobre el transporte de carga de una sola molécula.
  • La ingeniería de la banda de energía y la regulación del transporte de carga son alcanzables a nivel de una sola molécula.
  • Proporciona información para el desarrollo de nanocircuitos moleculares de alto rendimiento.