Patent ID: 6350363
Filing Date: 2002-02-26
Classification: C23C,C25D

Abstract:
A process of making an electric current rectifying device using spatially coupled bipolar electrochemical deposition comprising:(a) placing a source of electrically conductive material and at least two electrically conductive substrates and at least one semiconductor into an environment capable of conducting electricity and containing electrodes; (b) aligning the substrates and the semiconductor with respect to the electrodes such that the electrodes are not in contact with the substrates or the semiconductor and such that the material will form a conductive structure between and in contact with the substrates and the semiconductor when an electric field is applied between the electrodes; (c) applying a voltage to the electrodes to create a first electric field of a sufficient strength between the electrodes and for a time sufficient to form a first electrically conductive structure between and in contact with a first of the substrates and the semiconductor, the electrically conductive structure being substantially aligned with the first electric field; (d) reversing the polarity of the voltage applied to create a second electric field of a sufficient strength between the electrodes and for a time sufficient to form a second electrically conductive structure between and in contact with a second of the substrates and the semiconductor, the electrically conductive structure being substantially aligned with the second electric field, the semiconductor thus being transformed into the rectifying device.