A Semi-Analytical Model for Macaroni MOSFETs With Application to Vertical Flash Memories

We present a semianalytical model for the electrostatics and the current-voltage characteristics of Macaroni MOSFETs based on the exact solution of the Poisson equation, which is useful to investigate both the subthreshold and the ON-state regimes of these devices. With the addition of a simplified calculation of the tunneling current, the model is exploited to analyze the program performance of Macaroni NAND flash memories.