One electron and one hole {exciton} can bind electrostatically for 4 to 40 microseconds, 1150 nanometers apart. Electric forces cause free electrons and holes to drift in opposite directions, at same velocity. Electric force causes average drift velocity per unit force {charge mobility, exciton}. When electron meets hole, they merge. At constant force, ejections and recombinations are in equilibrium.
Physical Sciences>Physics>Electromagnetism>Conductivity>Semiconductor
5-Physics-Electromagnetism-Conductivity-Semiconductor
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Date Modified: 2022.0224