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首页> 外文会议>Fifth International Symposium on Quantum Confinement: Nanostructures, held November 2-5 in Boston, USA >Electronic bistability in an electrochemically self-assembled array of semiconductor quantum dots
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Electronic bistability in an electrochemically self-assembled array of semiconductor quantum dots

机译：半导体量子点的电化学自组装阵列中的电子双稳性

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摘要

A novel electronic bistability has been observed in a two-dimensional array of electrochemically self-assembled CdS quantum dots dispersed in alumina. The dots are produced by electrodepositiong CdS in 100 A-sized self-organized pores in a nanoporous alumian film produced by the anoduced by the anodization of an alumunum foil in sulfuric acid. The current-voltage characteristic of the array shows two distinct conductance states. The system switches from one conductance state to another if the dc bias is taken past a threshold voltage. This bistable behavior is perfectly repeatable. If the system is left in one conductance state, it remains tere indefinitely until switched to the other state by the application of an external dc bias. A speculative model is proposed which may explain this behavior. Such an effect may find applications in extermely dense static random access memory.
机译：在分散在氧化铝中的电化学自组装CdS量子点的二维阵列中，观察到了新的电子双稳性。这些点是通过将CdS电沉积在纳米多孔氧化铝膜中的100 A大小的自组织孔中而产生的，该纳米多孔氧化铝膜是通过铝箔在硫酸中进行阳极氧化而产生的。阵列的电流-电压特性显示出两个不同的电导状态。如果直流偏置超过阈值电压，则系统从一种电导状态切换到另一种电导状态。这种双稳态行为是完全可重复的。如果系统处于一种电导状态，则它会无限期保持状态，直到通过施加外部直流偏置切换到另一种状态为止。提出了一个可以解释这种行为的投机模型。这样的效果可以在非常密集的静态随机存取存储器中找到应用。

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