Drift-diffusion model for single layer transition metal dichalcogenide field-effect transistors

David Jimenez

doi:10.1063/1.4770313

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arXiv · 1207.3057

Drift-diffusion model for single layer transition metal dichalcogenide field-effect transistors

David Jimenez

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Abstract

A physics-based model for the surface potential and drain current for monolayer transition metal dichalcogenide (TMD) field-effect transistor (FET) is presented. Taking into account the 2D density-of-states of the atomic layer thick TMD and its impact on the quantum capacitance, a model for the surface potential is presented. Next, considering a drift-diffusion mechanism for the carrier transport along the monolayer TMD, an explicit expression for the drain current has been derived. The model has been benchmarked with a measured prototype transistor. Based on the proposed model, the device design window targeting low-power applications is discussed.

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David Jimenez. 2012-07-12. Drift-diffusion model for single layer transition metal dichalcogenide field-effect transistors. https://doi.org/10.1063/1.4770313

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