Tomas Leijtens is CTO and Co-Founder of Swift Solar, a leading developer of perovskite tandem solar technology. A globally recognized expert in perovskite photovoltaics, Leijtens has spent more than a decade advancing next-generation solar cells, with a particular focus on improving stability, efficiency, and commercial scalability. Prior to co-founding Swift Solar, he served as a research scientist at the National Renewable Energy Laboratory (NREL) and conducted research at Stanford University and the University of Oxford. His work includes pioneering contributions to the development of the first perovskite-silicon and all-perovskite tandem solar cells, helping lay the foundation for the emerging tandem solar industry. Leijtens holds a Ph.D. in Physics from Oxford and a B.S. in Chemical Engineering from Stanford University. He has authored hundreds of scientific publications and patents and has been recognized as a Forbes 30 Under 30 Fellow and a Clarivate Highly Cited Researcher.