Alejandro Pérez-Rodríguez (Phys. Deg. 1984, PhD 1987) is Full Professor in the Department of Electronics of the University of Barcelona. He’s the Head of Solar Energy Materials & Systems Group at IREC- Catalonia Institute for Energy Research- Spain. In 2005–2009 he has been Vice-Dean of the Faculty of Physics of the University, where he was coordinator of the Laboratory of Micro and Nanotechnologies. Since February 2009 he is ascribed to the Catalonia Institute for Energy Research (IREC) as Senior Researcher, where he heads the Research Group on Solar Energy Materials and Systems in the Department of Advanced Materials for Energy. His research activities and interests are centred on Optical and structural assessment of processes in semiconductor technologies; Si based microsystem technologies and nanotechnologies for advanced sensor applications and, more recently, on the development of new technologies for high efficiency low cost solar cells based on compound semiconductors and third PV device generation. He has coordinated 19 research projects in National Spanish R+D programmes (Electronics and Information Technologies, Materials, Nanoscience and Nanotechnology, CENIT...) as well as 6 International projects from different programmes of the European Union (Information Society Technology, Future Emerging Technologies, Energy...) and bilateral cooperative actions with different groups mainly from France and Germany. He is co-author of 252 papers (including 122 papers in ISI international journals and 9 invited reviews in international journals and series of books), and has supervised 7 Doctoral Thesis.