Janez Krč, PhD, is an associate professor in the Faculty of Electrical Engineering and a member of the Laboratory of Photovoltaics and Optoelectronics at the University of Ljubljana in Slovenia. He received his PhD in electrical engineering from the University of Ljubljana. His research and teaching activities cover photovoltaics, optoelectronics, and analog electronic circuits, including optical modeling and light management in thin-film solar cells. Marko Topič, PhD, is a professor in the Faculty of Electrical Engineering and head of the Laboratory of Photovoltaics and Optoelectronics at the University of Ljubljana. He is also an affiliate professor in the College of Natural Sciences at Colorado State University. Dr. Topič is the chair of the Slovenian Photovoltaic Technology Platform, a steering committee member of the European Photovoltaic Technology Platform, and a member of the Advisory Group on Energy in the Seventh Framework Programme of the European Commission. He received his PhD in electrical engineering from the University of Ljubljana. In 2008, he received Zoisova nagrada, the highest award in the Republic of Slovenia for scientific and research achievements. His research interests include photovoltaics, thin-film semiconductor materials, electron devices, optoelectronics, electronic circuits, and reliability engineering.