Invention Grant
US08912518B2 Resistive random access memory cells having doped current limiting layers
有权
具有掺杂限流层的电阻随机存取存储单元
- Patent Title: Resistive random access memory cells having doped current limiting layers
- Patent Title (中): 具有掺杂限流层的电阻随机存取存储单元
-
Application No.: US13671824Application Date: 2012-11-08
-
Publication No.: US08912518B2Publication Date: 2014-12-16
- Inventor: David Chi , Vidyut Gopal , Minh Huu Le , Minh Anh Nguyen , Dipankar Pramanik , Milind Weling
- Applicant: Intermolecular, Inc.
- Applicant Address: US CA San Jose
- Assignee: Intermolecular, Inc.
- Current Assignee: Intermolecular, Inc.
- Current Assignee Address: US CA San Jose
- Main IPC: H01L29/02
- IPC: H01L29/02 ; H01L47/00 ; G11C11/00 ; H01L45/00 ; G11C13/00

Abstract:
Provided are semiconductor devices, such as resistive random access memory (ReRAM) cells, that include current limiting layers formed from doped metal oxides and/or nitrides. 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 annealing. In some embodiments, the breakdown voltage of a current limiting layer may be at least about 8V. Some examples of such current limiting layers include titanium oxide doped with niobium, tin oxide doped with antimony, and zinc oxide doped with aluminum. Dopants and base materials may be deposited as separate sub-layers and then redistributed by annealing or may be co-deposited using reactive sputtering or co-sputtering. The high resistivity of the layers allows scaling down the size of the semiconductor devices including these layer while maintaining their performance.
Public/Granted literature
- US20140124725A1 Resistive Random Access Memory Cells Having Doped Current Limiting layers Public/Granted day:2014-05-08
Information query
IPC分类: