Dr. Oliver Schultz-Wittmann is Chief Technology Officer at HoloSolis where he leads technology strategy and the development of next-generation photovoltaic cell and module production. With over two decades of experience spanning research, industry and entrepreneurship, his work focuses on advancing high-efficiency silicon and tandem solar cell technologies from laboratory innovation to industrial scale.
Dr. Schultz-Wittmann previously has held leadership roles across the photovoltaic sector, including Senior Scientist and Project Leader at the Fraunhofer Institute for Solar Energy Systems and in quality management for global PV project portfolios across the U.S.A., Europe and Asia. As Director of Silicon R&D at First Solar, and Co-Founder of TetraSun, he contributed to the invention and development of passivating contact (TOPCon) solar cell technology.
Dr. Schultz-Wittmann earned his PhD in physics (Dr. rer. nat.) through the University of Konstanz in collaboration with the Fraunhofer Institute for Solar Energy Systems, where he developed the first multicrystalline silicon solar cells exceeding 20% efficiency, setting a world record for the material at the time. He holds a Diplom-Physiker degree from the University of Hamburg and an International Diploma from Imperial College London.
His contributions to photovoltaic science and technology have been recognized with several honors, including the IEEE Young Professional Award. Dr. Schultz-Wittmann has led international R&D teams, contributed to the development and commercialization of advanced solar technologies, and advised organizations across Europe, the United States, and Asia. He currently serves on advisory boards in Germany and Australia, contributing to the advancement of solar energy deployment worldwide.
June 23, 2026Panel Discussion