Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Types of Semiconductors01:20

Types of Semiconductors

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...
Semiconductors01:22

Semiconductors

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...
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

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 semiconductor's...
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

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...
Non-ohmic Devices00:51

Non-ohmic Devices

In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
Consider a simple circuit consisting of a battery, a diode, and a resistor. A diode...
P-N junction01:11

P-N junction

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Stark absorption spectroscopy of flavin mononucleotide and derivatives of pyrene, xanthene, phenoxazine, and thienotetracene.

Physical chemistry chemical physics : PCCP·2026
Same author

Plasmons Enable Ultralow Threshold Solid-State Triplet Fusion Upconversion with a 2D Sensitizer.

Nano letters·2026
Same author

Enhanced Photostability through Rapid Exciton Decay in Desymmetrized Cyclopentannulated Acenes with Strong Face-to-Face pi Stacking.

Chemistry of materials : a publication of the American Chemical Society·2026
Same author

Furan Silylethers: Access to Functionalized (Hydro)quinones and Polycyclic Aromatics for Optoelectronic Applications.

Organic letters·2025
Same author

Intersystem Crossing Outcompetes Triplet-Pair Separation from <sup>1</sup>(TT) below 270 K in Anthradithiophene Films.

Journal of the American Chemical Society·2025
Same author

Morphology- and crystal packing-dependent singlet fission and photodegradation in functionalized tetracene crystals and films.

The Journal of chemical physics·2024

Related Experiment Video

Updated: Jul 9, 2026

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
08:43

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors

Published on: November 7, 2016

The larger acenes: versatile organic semiconductors.

John E Anthony1

  • 1Department of Chemistry, University of Kentucky, Lexington, KY 40506-0055, USA. anthony@uky.edu

Angewandte Chemie (International Ed. in English)
|November 30, 2007
PubMed
Summary

Larger acenes exhibit excellent semiconductor properties, driving new synthesis and functionalization methods. Research now focuses on improving processability and exploring structure-property relationships in these advanced organic materials.

More Related Videos

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
08:07

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
06:49

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

Published on: March 2, 2021

Related Experiment Videos

Last Updated: Jul 9, 2026

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
08:43

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors

Published on: November 7, 2016

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
08:07

Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates

Published on: June 18, 2013

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
06:49

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

Published on: March 2, 2021

Area of Science:

  • Organic electronics
  • Materials science
  • Solid-state physics

Background:

  • Acenes are studied for unique electronic properties due to their pi-bond topology.
  • Recent findings show larger acenes possess impressive semiconductor properties.
  • This has spurred renewed interest and research in acene-based materials.

Purpose of the Study:

  • To explore the semiconductor properties of larger acene molecules.
  • To develop novel synthetic and functionalization strategies for acenes.
  • To investigate structure-property relationships in newly accessible acenes.

Main Methods:

  • Synthesis of functionalized acenes, including those larger than pentacene.
  • Purification techniques for high-purity acene single crystals.
  • Fabrication of organic electronic components using acene materials.

Main Results:

  • Demonstrated impressive semiconductor properties in larger acene homologues.
  • Developed new methods for acene functionalization, improving solution processability.
  • Enabled synthesis and study of acenes previously unavailable or poorly understood.

Conclusions:

  • Acenes are promising materials for organic electronics due to their tunable semiconductor properties.
  • Advanced synthesis and functionalization techniques are key to unlocking their potential.
  • Further research into larger acenes will reveal new structure-property relationships and applications.