A Polymer-Electrolyte-Based Atomic Switch
A Polymer-Electrolyte-Based Atomic Switch
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DOI：
10.1002/adfm.201001520
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发表时间：
2011-01-07
影响因子：
19
通讯作者：
Aono, Masakazu
中科院分区：
文献类型：
--
作者：
Wu, Shouming;Tsuruoka, Tohru;Aono, Masakazu
报道了一种基于银离子导电固体聚合物电解质（SPE）的阻变存储器的研究。简单的Ag/SPE/Pt结构含有聚氧化乙烯-高氯酸银复合物，在偏压扫描下表现出双极电阻开关。开关行为强烈依赖于高氯酸银浓度。从热，运输，和电化学测量的结果，可以得出结论，所观察到的开关起源于形成和溶解的银金属丝内的SPE膜引起的电化学反应。这是第一个报告的电化学“原子开关”实现使用有机材料。该器件还显示出大于10（5）的ON/OFF电阻比、高于1 μ s的编程速度和长于1周的保持时间。这些结果表明基于SPE的电化学器件可能适合于柔性开关和存储器应用。
Studies on a resistive switching memory based on a silver-ion-conductive solid polymer electrolyte (SPE) are reported. Simple Ag/SPE/Pt structures containing polyethylene oxide-silver perchlorate complexes exhibit bipolar resistive switching under bias voltage sweeping. The switching behavior depends strongly on the silver perchlorate concentration. From the results of thermal, transport, and electrochemical measurements, it is concluded that the observed switching originates from formation and dissolution of a silver metal filament inside the SPE film caused by electrochemical reactions. This is the first report of an electrochemical "atomic switch" realized using an organic material. The devices also show ON/OFF resistance ratios greater than 10(5), programming speeds higher than 1 mu s, and retention times longer than 1 week. These results suggest that SPE-based electrochemical devices might be suitable for flexible switch and memory applications.