发明申请
- 专利标题: Resistive Random Access Memory Cells Having METAL ALLOY Current Limiting layers
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申请号: US13722314申请日: 2012-12-20
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公开(公告)号: US20140117303A1公开(公告)日: 2014-05-01
- 发明人: Yun Wang , Tony P. Chiang , Imran Hashim , Tim Minvielle , Dipankar Pramanik , Takeshi Yamaguchi
- 申请人: Intermolecular Inc. , Kabushiki Kaisha Toshiba , SanDisk 3D LLC
- 申请人地址: US CA San Jose US CA Milpitas JP Tokyo
- 专利权人: INTERMOLECULAR INC.,SANDISK 3D LLC,KABUSHIKI KAISHA TOSHIBA
- 当前专利权人: INTERMOLECULAR INC.,SANDISK 3D LLC,KABUSHIKI KAISHA TOSHIBA
- 当前专利权人地址: US CA San Jose US CA Milpitas JP Tokyo
- 主分类号: H01L45/00
- IPC分类号: H01L45/00
摘要:
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.
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