What is the charge on the surface of silicon dioxide?
Fixed oxide charges refer to excess silicon ions in silicon dioxide, or oxygen vacancies. For fixed positive charges.
Oxide trap charge is the charge generated in silicon dioxide due to high-energy electrons, ions, electromagnetic radiation, or other radiation sweeping the surface of silicon dioxide.
Oxide outer surface charge is the charge produced by impurities in the process of ionization. A positive charge has the same probability as a negative charge.
Interface trap charge - the remaining dangling bonds of silicon at the junction of silicon dioxide and silicon structures in silicon dioxide. Characterized by electric charge, often characterized by positive charge.
Movable ion charge refers to the ionized positive ion charge in silicon dioxide. Most of them are metal ions, charges and hydrogen cations.
