Caractérisation du phosphore noir pour des applications optoélectroniques hyperfréquences

Abstract : The research project conducted focuses on the optoelectronic and high frequency characterization of black phosphorus. The context of this project is the trend of downscaling and multi-physical coupling seen today in industrial electronics. The characterization carried out is directed for a specific application, the realisation of microwave photoswitch controlled by a laser optical excitation at 1.55 µm. For this purpose, during this PhD a production process of thin and large bi-dimensional layers of black phosphorus has been performed, along with the fabrication of characterization devices, and a discussion to determine suitable appendices for substrate, capping layer and metallization. The technological development is coupled with optical, electronic (DC) and radiofrequency characterizations of the bi-dimensional layers for the determination of inherent black phosphorus properties like the photogenerated carrier lifetime, the material permittivity, the resistivity and the mobility of the carriers. Those parameters are essential to understanding design and simulate high frequency optoelectronic devices on black phosphorus such as the microwave photoswitch controlled at 1.55 µm. The obtained results assert black phosphorus as a promising material for this kind of application. The first performances obtained with the use of bP as an active material for photoconductive switching are very encouraging and open the way for high frequency and high speed applications.
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Submitted on : Wednesday, May 22, 2019 - 1:24:41 PM
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Anne Penillard. Caractérisation du phosphore noir pour des applications optoélectroniques hyperfréquences. Physique [physics]. Sorbonne Université, 2018. Français. ⟨NNT : 2018SORUS019⟩. ⟨tel-02136799⟩

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