Related Experiment Video
Updated: May 11, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
Published on: April 12, 2018
Quasi-electric fields and band offsets: teaching electrons new tricks (Nobel lecture)
1ECE Department, University of California, Santa Barbara, CA 93106, USA. kroemer@ece.ucsb.edu
Abstract:
The invention and development of fast opto- and microelectronic components based on layered semiconductor structures, termed semiconductor heterostructures, is described herein. Such fast transistors are used in radio link satellites and the base stations of mobile telephones, for examples. Laser diodes built with the same technology drive the flow of information along fiber-optic cables, and may be found also in CD players, bar-code readers, and laser pointers. The double-heterostructure principle is also increasingly used in incoherent light-emitting diodes, for example in traffic lights and other light sources requiring colored visible light.
More Related Videos
Related Concept Videos
Energy Bands in Solids
Band Formation:
When atoms are brought close together, as in a solid, these discrete energy levels begin to split due to the overlap of electron orbitals from adjacent atoms. This split occurs because of the Pauli exclusion principle, which states that no two...
The de Broglie Wavelength
Fermi Level Dynamics
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Coulomb's Law and The Principle of Superposition
The Principle of Superposition answers the question. Yes, Coulomb's Law applies to each pair of charges, and the net force on each charge is the vector sum of the...
Electric Field of Two Equal and Opposite Charges
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
Electric Field at the Surface of a Conductor
In the 19th century, Michael Faraday conducted the famous ice pail experiment to prove that the charges always reside on the surface of a conductor. The experimental set-up consists of a conducting uncharged container mounted on an insulating stand. The outer surface of the container is...

