Advanced Spectroscopies for Investigating Electronic Properties and Charge Transfer Mechanisms in Graphene and Hybrid Interfaces

The advancement of science and technology is intrinsically tied to the development of innovative materials. These materials play a critical role in meeting the escalating demands for complex and high-performance devices. Consequently, there is a compelling need for thorough investigations into the physical, morphological, and electronic properties of solid-state semiconductors. These semiconductors hold significant potential for a wide range of applications, spanning from photonics and electronics to photovoltaics and sensing. Within the context of this doctoral project, particular emphasis is placed on the rigorous exploration of advanced materials and interfaces, with a specific focus on interfaces involving graphene and nanostructured metal oxide semiconductors. In order to gain an in-depth understanding of these materials and their properties, a combination of cutting-edge spectroscopic techniques has been employed, encompassing conventional laboratory setups, high-intensity synchrotron radiation experiments, ultrafast laser pulse methodologies, and measurements conducted under operando conditions. This confluence of diverse experimental approaches culminates in a comprehensive characterization of the chemical systems under investigation. By means of this integrative methodology, the static and dynamic responses of these materials can be addressed, including time-resolved electron transfer and charge transport processes, electronic properties of specific materials and interfaces, and interaction with target gas analytes.