NEXTGEN 2017 (Nanotechnology and next generation high efficiency photovoltaics international school & workshop) will be held on September 12-15, 2017. This event continues on the previous successful NEXTGEN NANO PV International Schools that were organized in Corsica-France (2013) and Menorca-Spain (2015). The main aim is to review the state of the art and exciting challenges related to the implementation of advanced photovoltaic technologies for solving the main problems in the development of cost-efficient and sustainable photovoltaics. The workshop will analyse and highlight the potential of new nanotechnology, materials and devices concepts for successful industrial implementation into new competitive photovoltaic technologies for the European industry. At the same time, and unique in Europe, the School will provide a suitable platform for an efficient sharing of experience and visions between well- known experts from different academic, research and industry groups and young researchers, to foster interaction and to contribute to bridge the gap between laboratory and market.