Abstract
A gate-all-around polycrystalline silicon nanowire (NW) floating-gate (FG) memory device was fabricated and characterized in this work. The cross-section of the NW channels was intentionally made to be triangular in shape in order to study the effects of the corners on the device operation. Our results indicate that the channel corners are effective in lowering the programming and erasing (P/E) operation voltages. As compared with the charge-trapping type devices, a larger memory window is obtained with the FG scheme under low-voltage P/E conditions. A model considering the nature of the charge storage medium is proposed to explain the above findings.
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