Invention Grant
US08817524B2 Resistive random access memory cells having metal alloy current limiting layers
有权
具有金属合金限流层的电阻随机存取存储单元
- Patent Title: Resistive random access memory cells having metal alloy current limiting layers
- Patent Title (中): 具有金属合金限流层的电阻随机存取存储单元
-
Application No.: US13722314Application Date: 2012-12-20
-
Publication No.: US08817524B2Publication Date: 2014-08-26
- Inventor: Yun Wang , Tony P. Chiang , Imran Hashim , Tim Minvielle , Dipankar Pramanik , Takeshi Yamaguchi
- Applicant: Intermolecular Inc. , SanDisk/Toshiba , Kabushiki Kaisha Toshiba
- Applicant Address: US CA San Jose JP Tokyo US CA Milpitas
- Assignee: Intermolecular, Inc.,Kabushiki Kaisha Toshiba,SanDisk 3D LLC
- Current Assignee: Intermolecular, Inc.,Kabushiki Kaisha Toshiba,SanDisk 3D LLC
- Current Assignee Address: US CA San Jose JP Tokyo US CA Milpitas
- Main IPC: G11C13/00
- IPC: G11C13/00 ; G11C7/00 ; H01L45/00 ; H01L27/24

Abstract:
Provided are semiconductor devices, such as resistive random access memory (ReRAM) cells, that include current limiting layers formed from alloys of transition metals. Some examples of such alloys include chromium containing alloys that may also include nickel, aluminum, and/or silicon. Other examples include tantalum and/or titanium containing alloys that may also include a combination of silicon and carbon or a combination of aluminum and nitrogen. These current limiting layers may have resistivities of at least about 1 Ohm-cm. This resistivity level is maintained even when the layers are subjected to strong electrical fields and/or high temperature processing. In some embodiments, the breakdown voltage of a current limiting layer is at least about 8V. The high resistivity of the layers allows scaling down the size of the semiconductor devices including these layers while maintaining their performance.
Public/Granted literature
- US20140117303A1 Resistive Random Access Memory Cells Having METAL ALLOY Current Limiting layers Public/Granted day:2014-05-01
Information query