Patent ID: 7442605
Filing Date: 2008-10-28
Classification: G11C,H01L

Abstract:
1. A method for manufacturing a resistively switching memory cell, comprising a first electrode and a second electrode with an active material positioned therebetween, the active material being adapted to be placed in a substantially electroconductive state by means of electrochemical switching processes, comprising: doping the active material in a doping process by diffusing a mobile material into the active material from the first electrode in a direction to the second electrode to build a doped region; and performing a retraction process by at least partial retraction of the mobile material diffused into the active material from a region close to the second electrode to generate or modify a doping profile between the doped region and an undoped region, wherein performing the retraction process comprises applying an electric charge to the electrodes by contact with a high frequency inert gas plasma.