Invention Grant
US08809205B2 Sequential atomic layer deposition of electrodes and resistive switching components 有权
电极和电阻式开关元件的顺序原子层沉积

Sequential atomic layer deposition of electrodes and resistive switching components
Abstract:
Provided are methods of forming nonvolatile memory elements using atomic layer deposition techniques, in which at least two different layers of a memory element are deposited sequentially and without breaking vacuum in a deposition chamber. This approach may be used to prevent oxidation of various materials used for electrodes without a need for separate oxygen barrier layers. A combination of signal lines and resistive switching layers may be used to cap the electrodes and to minimize their oxidation. As such, fewer layers are needed in a memory element. Furthermore, atomic layer deposition allows more precise control of electrode thicknesses. In some embodiments, a thickness of an electrode may be less than 50 Angstroms. Overall, atomic layer deposition of electrodes and resistive switching layers lead to smaller thicknesses of entire memory elements making them more suitable for low aspect ratio features of advanced nodes.
Information query
IPC分类:
H 电学
H01 基本电气元件
H01L 半导体器件;其他类目中不包括的电固体器件(使用半导体器件的测量入G01;一般电阻器入H01C;磁体、电感器、变压器入H01F;一般电容器入H01G;电解型器件入H01G9/00;电池组、蓄电池入H01M;波导管、谐振器或波导型线路入H01P;线路连接器、汇流器入H01R;受激发射器件入H01S;机电谐振器入H03H;扬声器、送话器、留声机拾音器或类似的声机电传感器入H04R;一般电光源入H05B;印刷电路、混合电路、电设备的外壳或结构零部件、电气元件的组件的制造入H05K;在具有特殊应用的电路中使用的半导体器件见应用相关的小类)
H01L21/00 专门适用于制造或处理半导体或固体器件或其部件的方法或设备
H01L21/02 .半导体器件或其部件的制造或处理
H01L21/04 ..至少具有一个跃变势垒或表面势垒的器件,例如PN结、耗尽层、载体集结层
H01L21/34 ...具有H01L21/06,H01L21/16及H01L21/18各组不包含的或有或无杂质,例如掺杂材料的半导体的器件
H01L21/46 ....用H01L21/36至H01L21/428各组不包含的方法或设备处理半导体材料的(在半导体材料上制作电极的入H01L21/44)
H01L21/461 .....改变半导体材料的表面物理特性或形状的,例如腐蚀、抛光、切割
H01L21/469 ......在半导体材料上形成绝缘层的,例如,用于掩膜的或应用光刻技术的(密封层入H01L21/56)以及这些层的后处理
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