Exciton - Wikipedia
网页An electron and an electron hole that are attracted to each other by the Coulomb force can form a bound state called an exciton. It is an electrically neutral quasiparticle that exists mainly in condensed matter, including insulators, semiconductors, some metals, but also in certain atoms, molecules and liquids.
激子（excitons） - 知乎专栏
网页1. Excitons. 激子是由受激电子和空穴由于库仑引起的形成的束缚态 [1]。 根据激子的半径和受激电子和空穴之间库伦作用力大小，激子在固体可以分为两类： Frenkel excitons： 在小的介电常数材料中，例如离子晶体，受激电子和空穴在同一个或最邻近的晶胞内紧密地结合在一起。 这种激子有一个典型的结合能（binding energy）在0.1-1 eV，Frenkel excitons通常可以在离子晶体和由芳香族分子组成的有机分子晶体中发现。
Exciton: An Introduction - Ossila
网页Excitons are quasi-particles made up of bound electron and hole pairs. Having a clear understanding of exciton theory is essential in order to understand semiconductor behaviour. Exitonic behaviour can be examined using various spectroscopy techniques, including an optical spectrometer.
激子（Exciton） - 知乎专栏
网页电子和空穴之间的相互吸引作用降低了系统的原始能量，从而形成了电子-空穴对，我们称之为激子（Exciton）。 激子能级处于能隙（Energy gap）内，所以当入射光子的能量略低于能隙时，就会存在一种（ E<E_g ）激发态和新的能级。
Exciton | Quantum Mechanics, Electron-Hole Pairs
网页exciton, the combination of an electron and a positive hole (an empty electron state in a valence band), which is free to move through a nonmetallic crystal as a unit. Because the electron and the positive hole have equal but opposite electrical charges, the exciton as a whole has no net electrical charge (though it transports energy).
Semiconductor excitons in new light | Nature Materials
网页2006年7月1日 · Excitons are quasi-particles that form when Coulomb-interacting electrons and holes in semiconductors are bound into pair states. They have many features analogous to those of atomic hydrogen.
Excitons and emergent quantum phenomena in stacked 2D
网页2021年11月17日 · This Review discusses the exciton physics of transition metal dichalcogenides, focusing on moiré patterns and exciton many-body physics, and outlines future research directions in the field.
What is an Exciton? - MIT-Harvard Center for Excitonics
网页2014年3月10日 · When a chlorophyll molecule in the leaf of a plant absorbs a photon of sunlight, the solar energy is converted into an excited state of the molecule known as an exciton. The exciton then transports the energy between molecules in the leaf, and ultimately mediates the conversion of sunlight into electrical energy.
Exciton physics and device application of two-dimensional …
网页2018年9月10日 · Two-dimensional group-VI transition metal dichalcogenide semiconductors, such as MoS 2, WSe 2, and others, exhibit strong light-matter coupling and possess direct band gaps in the infrared and ...
Exciton–Photonics: From Fundamental Science to Applications
网页2021年7月26日 · Semiconductors in all dimensionalities ranging from 0D quantum dots and molecules to 3D bulk crystals support bound electron–hole pair quasiparticles termed excitons. Over the past two decades, the...