Abstract
A method has been found for introducing ions into SiO2 that are highly mobile at room temperature. This is done by contaminating the surface of the oxide with a salt containing the ion to be introduced, followed by charging with a corona discharge. Positive ions move rapidly through a thin layer of oxide and accumulate at the silicon interface where their presence is detected by means of C‐V measurements. Charge introduced in this way can be subsequently removed by charging with a negative corona, followed by washing in water and annealing.