CaMPUUS

The aim of the CaMPUUS project is double. On the one hand, it is to develop a two-dimensional spectroscopic technique based on fluorescence detection. Only a few such setups exist in the world, and none in France. On the other hand, this new setup, combined with another femtosecond fluorescence technique existing in the host laboratory –fluorescence up-conversion-, will be used to study perovskite materials. The latter are extremely promising materials for photovoltaics but their photophysical properties remain poorly understood, in particular at ultrashort time scales (< 1 ps). The study will focus on multi-exciton generation (MEG) in 2D perovskite nanostructures, process capable of increasing the photocurrent and thus photovoltaic efficiency., This ultrafast process can only be properly characterized with the combination of the two fluorescence techniques by enabling direct observation and quantification of MEG. The candidate, Elsa Cassette, has already acquired a deep know-how in two-dimensional spectroscopy at the Toronto and Princeton Universities. LIDYL-LFP is the ideal place to develop 2D fluorescence spectroscopy, owing to its activities centered on ultrafast laser spectroscopy in the condensed phase and and excited state dynamics. The unique expertise of Elsa Cassette will find a most favorable environment in the host laboratory for the success of this very ambitious project.