"The present multi-annual International Research staff exchange program has the aim to strengthen the research partnerships among European (Italy and Spain) and Third Countries (Brazil and Russia) in the field of Concentrating photovoltaic (CPV). The scope of the project is (I) to promote a transfer of knowledge between the partners on the CPV technology, (II) to study the soiling effects on CPV modules and (III) to propose alternative solutions for glass surface modification in order to reduce the dust accumulation on the photovoltaic modules. For the first time a throughout comparative testing will be carried out, bringing new scientific insight about surface functionalization and climate influence on the photovoltaic performances. The transfer of knowledge between the partners will take place through several cross actions comprising seminars, courses and trainings to be held both in Europe and in third Countries, as well as through the research activities foreseen in the project. This project will strengthen the European expertise and knowledge on the CPV technology, in order to promote a wider exploitation of this renewable Energy resource producing a step ahead towards a sustainable global energy system. The results of the research will be disseminated throughout scientific publications and by means of final Workshop where new proposals for reinforcing the research cooperation between European and third Countries research organizations in this field will be launched."