Cellules photovoltaïques pour la récupération d'énergie et la communication de données

Abstract : The invention of high-intensity blue LED hit the market and the retail industry in 1993. It even brought a revolution in lighting history. These new devices significantly improved energy efficiency than ever before and led to their massive deployment since the end of the 2000s. Semiconductor materials for LED devices are used in the microelectronics domain to implement high-frequency logic functions. Light fidelity (LiFi) technologies combine illumination and communication capabilities by implanting information transmission function to existing lighting equipment. Information is transmitted by using intensity modulation of optical sources at high frequencies, far beyond the range of visual perception. LiFi is an enabling technology for the Internet of Things (IoT) systems. IoT requires a large number of wireless connections, so it is not compatible with existing radiofrequency networks. This work is based on the reception of light modulation. Photodiodes are the mostly used receivers, however their constraints on lighting and consumption make it difficult to meet the requirements of the IoT. On the ground of this, this research is aimed at studying the possibility of receiving LiFi modulation by photovoltaic cells and modules due to their two main qualities: Passive detection and large dimensions (omnidirectional reception and shade resistance).
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Nominoë Lorrière. Cellules photovoltaïques pour la récupération d'énergie et la communication de données. Micro et nanotechnologies/Microélectronique. Aix-Marseille Université (AMU); IM2NP - Aix Marseille Université, 2019. Français. ⟨tel-02454282⟩

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