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Investigation of interfacial and bulk physical properties of hybrid perovskite-based devices

Abstract : Hybrid-organic-inorganic perovskites (HOIPs) have provoked intense research over the recent years.In this thesis, we contribute to this investigation by first examining the results of different solutionpreparation processes, followed by characterizing the films using atomic force microscopy, X-raydiffraction, ultra-violet photoelectron spectroscopy, X-ray photoelectron spectroscopy, Kelvin probesurface potential measurement, and time-of-flight mobility measurement. The state distribution of theHOIP/Au interface was then studied by low temperature J–V–L measurement combined withnumerical simulation. In the process of these characterizations, it became clear that the dielectricrelaxations in HOIPs, such as ion migration and organic cation dipole orientation, play an importantrole in the material, and the next part of the thesis presents an analysis of these mechanisms with thehelp of temperature dependent impedance spectroscopy measurement. These studies built thefoundations for the final part of the thesis, where we investigated a so far elusive subject in HOIPs, themigration of protons
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  • HAL Id : tel-01424236, version 1

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Yan-Fang Chen. Investigation of interfacial and bulk physical properties of hybrid perovskite-based devices. Electronics. Université de Bordeaux, 2016. English. ⟨NNT : 2016BORD0268⟩. ⟨tel-01424236⟩

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