Patent ID: 8129704
Filing Date: 2012-03-06
Classification: G11C,H01L

Abstract:
1. A non-volatile resistive-switching memory element comprising: a first electrode is configured to have a first work function; a first metal oxide with a first thickness and located over the first electrode; a second metal oxide with a second thickness and located over the first metal oxide, the second metal oxide is different from the first metal oxide, the second thickness is less than 25% of the first thickness; a second electrode located over the second metal oxide, the second electrode is configured to receive a positive pulse and the second electrode is configured to have a second work function greater than the first work function, wherein the memory element switches from a high resistance state to a low resistance state and vice versa; and a third metal oxide between the first metal oxide and the first electrode, wherein the third metal oxide aliovalently dopes into the first metal oxide.