Solar energy conversion, processes

The limiting efficiency sumit of a solar energy conversion process is [102,103] ... 

Recent trends in the search for new photosensitizers to be used for solar energy conversion processes are illustrated. Particular emphasis is given on the Ru(II)-polypyridlne family, the use of new cyclometalated ligands, and the use of cage-type ligands. 

Most of the investigations in this field have focused on the use of cobalt sepulchrate and sarcophaginates as electron-transfer sensitizers in photocatalytic cyclic solar energy conversion processes [340, 375-378]. This is mainly due to their specific redox behaviour stipulated by peculiarities of the cobalt ion electronic structure and screening of this ion by an encapsulating ligand. 

CHARGE SEPARATION AND REDOX CATALYSIS IN SOLAR ENERGY CONVERSION PROCESSES... 

Solar energy conversion processes start from photon-matter interactions and a photon triggered chemical reaction almost always generates changes in nuclear geometry of those involved. The availability of high repetition rate, intense and... 

Most current XTA studies are on the transient structures of excited states that are directly generated by photons through ground to excited state transitions. In solar energy conversion processes, such as photocatalysis, the most interesting structures to be determined are often those resulting from the excited state, such as a photocatalyst-substrate complex and other intermediate structures produced in subsequent transformations. In order to find the structure/property correlations of the catalysts, a detailed knowledge and direct observation of reaction trajectories is necessary. 

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