Abstract
In this work, the authors report a memory device based on a Si thin film transistor (TFT) structure by incorporating silicon-rich silicon nitride (SRSN) film in the gate dielectric stacks as the charge storage layer. The SRSN film has a lower barrier for hole injection than the barrier for electron injection. Therefore, the memory window is dominated by hole injection. The memory window for TFT nonvolatile memory at steady state as large as 6.8V is observed, and the memory window is around 3V under pulse operation. In addition, this TFT memory has no significant degradation after 500 times of switching operation.
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