Energy-band engineering for improved charge retention in fully self-aligned double floating-gate single-electron memories.
نویسندگان
چکیده
We present a new fully self-aligned single-electron memory with a single pair of nano floating gates, made of different materials (Si and Ge). The energy barrier that prevents stored charge leakage is induced not only by quantum effects but also by the conduction-band offset that arises between Ge and Si. The dimensions and position of each floating gate are well-defined and controlled. The devices exhibit a long retention time and single-electron injection at room temperature.
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عنوان ژورنال:
- Nano letters
دوره 11 11 شماره
صفحات -
تاریخ انتشار 2011