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Theses

Caractérisation électrique et électro-optique de transistor à base de nanotube de carbone en vue de leur modélisation compacte

Abstract : This PhD thesis presents a computationally efficient physics-based compact model for optically-gated carbon nanotube field effect transistors (OG-CNTFETs), especially in the non-volatile memory application. This model includes memory operations such as "read", "write", "erase" or "program", and "reset" which are modeled using trapping and detrapping mechanisms at the polymer/oxide interface. The relaxation of the memory state is taken into account. Furthermore, the self-consistent modeling of Schottky barriers at contacts between the carbon nanotube channel and metal electrodes is integrated in this model applying the effective Schottky barrier method. The Schottky contact model can be included in CNTFET based devices for a typical biasing range of carbon nanotube transistors. This compact model is validated by the good agreement between simulation results and experimental data (I-V characteristics). In the non-volatile memory application, this model can fully reproduce device behaviors in transient simulations. A prediction study of the key technological parameter, the CNT diameter variety is established to expect its impact on the transistor performance, and more importantly, on the memory operation. In the other hand, this thesis presents a preliminary electric characterization (I-V) of CNTFETs and OG-CNTFETs for the device modeling database. A preliminary optoelectronic characterization method is proposed.
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https://tel.archives-ouvertes.fr/tel-00592479
Contributor : Si-Yu Liao <>
Submitted on : Wednesday, May 25, 2011 - 12:08:46 AM
Last modification on : Thursday, January 11, 2018 - 6:21:09 AM
Long-term archiving on: : Friday, August 26, 2011 - 2:23:10 AM

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  • HAL Id : tel-00592479, version 2

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Si-Yu Liao. Caractérisation électrique et électro-optique de transistor à base de nanotube de carbone en vue de leur modélisation compacte. Micro et nanotechnologies/Microélectronique. Université Sciences et Technologies - Bordeaux I, 2011. Français. ⟨tel-00592479v2⟩

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