An overview of the switching parameter variation of RRAM

查看全文 作　　者：Meiyun [1]Zhang;Shibing [1]Long;Guoming [1]Wang;Yang [1]Li;Xiaoxin [1]Xu;Hongtao [1]Liu;Ruoyu [1]Liu;Ming [1]Wang;Congfei [1]Li;Pengxiao [1]Sun;Haitao [1]Sun;Qi [1]Liu;Hangbing [1]L;Ming [1]Liu

机构地区：[1]Laboratory of Nanofabrication and Novel Device Integration,Institute of Microelectronics, Chinese Academy of Sciences

出　　处：《Chinese Science Bulletin》索引2014年第59卷第36期,共14页

基　　金：supported by the National Natural Science Foundation of China(61322408,61221004,61334007,61274091,61106119 and 61106082);National Basic Research Program of China(2010CB934200 and 2011CBA00602);National High Technology Research and Development Program of China(2011AA010401 and 2011AA010402) 摘　　要：Resistive random access memory(RRAM) has been considered as one of the most promising candidates for next-generation nonvolatile memory, due to its advantages of simple device structure, excellent scalability, fast operation speed and low power consumption. Deeply understanding the physical mechanism and effectively controlling the statistical variation of switching parameters are the basis of fostering RRAM into commercial application. In this paper, based on the deep understanding on the mechanism of the formation and rupture of conductive filament, we summarize the methods of analyzing and modeling the statistics of switching parameters such as SET/RESET voltage, current, speed or time. Then, we analyze the distributions of switching parameters and the influencing factors. Additionally, we also sum up the analytical model of resistive switching statistics composed of the cell-based percolation model and SET/RESET switching dynamics. The results of the model can successfully explain the experimental distributions of switching parameters of the Ni O- and Hf O2-based RRAM devices. The model also provides theoretical guide on how to improve the uniformity and reliability such as disturb immunity. Finally, some experimental approaches to improve the uniformity of switching parameters are discussed. 关键词：切换参数变化非易失性存储器随机存取存储器统计分析模型操作速度统计方法渗流模型

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An overview of the switching parameter variation of RRAM

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