+An **exciton** is a quantum mechanical bound state of an [Electron](/wiki/electron) and an [Electron Hole](/wiki/electron_hole), drawn together by their electrostatic attraction within a material. This electrically neutral quasiparticle can transport energy without net charge, appearing notably in semiconductors and insulators.
+## See also
+- [Semiconductor](/wiki/semiconductor)
+- [Quasiparticle](/wiki/quasiparticle)
+- [Band Gap](/wiki/band_gap)
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