Excitons, quasiparticles formed by an electron and a hole, transfer energy without a net charge. Physicist Ivan Biaggio ...

Excitons, encountered in technologies like solar cells and TVs, are quasiparticles formed by an electron and a positively charged "hole," moving together in a semiconductor. Created when an electron ...

and the electron current was, by means of an anode behind the crucible and a ring near the grid, concentrated on the hole of the crucible where the concentration of vapour was a maximum.