Exciton
An exciton is an electron bound to an electron hole. It is neutrally charged (because the negative charge of the electron is balanced by the positive charge of the electron hole) and is a quasiparticle.
An exciton is an electron bound to an electron hole. It is neutrally charged (because the negative charge of the electron is balanced by the positive charge of the electron hole) and is a quasiparticle.
