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Excitons are electron-hole pairs in semiconductors that are electrostatically bound by strong Coulombic interactions. In ultrathin 2D semiconductors that are a few atoms thick (typically ~0.7 nm ...
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Breaking new ground for computing technologies with electron-hole crystals Date: July 30, 2024 Source: National University of Singapore Summary: A team developed a novel method to successfully ...
Credit: Carbon Energy (2024). DOI: 10.1002/cey2.434 A team of researchers have collaborated to characterize electron-hole separation in the light-absorbing layer of kesterite thin-film solar cells.
Using the density functional theory we find the energy and the equilibrium density of the electron-hole liquid in diamond films. The local density approximation is used to account for exchange and ...
Electron Vs. Hole Movement: When an external voltage is applied to a semiconductor, it creates an electric field. This electric field pushes electrons in one direction (conventional current flow).
When an electron in a semiconductor is excited into a higher energy level, either by photon absorption or by another excitation technique, it forms a positively charged "hole" in the lower energy ...
Both sides now: artist's impression of bilayer graphene with an electron-hole symmetric double quantum dot, where the electron and the hole are in different layers. (Courtesy: Sebastian Staacks) ...
Coupling of electron-hole pairs Date: September 6, 2022 Source: Swiss Nanoscience Institute, University of Basel Summary: Physicists have succeeded in coupling different types of electron-hole ...
This was possible due to adjusting interlayer excitons. The resulting coupling causes the properties of the two types of electron-hole pairs to merge, allowing scientists to tailor merged particles ...
Specifically, electron-hole pairs can be very effectively described as oscillating masses or circuits. “These simple and general analogies help us to gain a better understanding of the fundamental ...