Welcome to a new This is IT interview. Dr. Maciej Kawecki and Maciej Krajewski will talk about topics such as: what are perovskites and how do they work? Is there an opportunity for photovoltaics? What is the price for the new energy source? Will photovoltaics undergo a revolution in the coming years? Enjoy an interview with Maciej Krajewski - co-author of the groundbreaking research on perovskites | This is IT.