Stefaan De Wolf's expertise lies in the science and technology of photovoltaics. His research focuses on the fabrication and characterization of high-efficiency solar cells, with specific attention to the fundamental understanding of interface structures and electrical contact formation, relevant to solar cells and electronic devices. Technologies of interest are perovskite and silicon solar cells, in single- and multi-junction form. He is also interested in scaling of photovoltaic technologies and addressing reliability issues, especially those associated with sunny climates.
J. Liu, M. De Bastiani, E. Aydin, G.T. Harrison, Y. Gao, R.R. Pradhan, M.K. Eswaran, M. Mandal, W. Yan, A. Seitkhan, M. Babics, A.S. Subbiah, E. Ugur, F. Xu, L. Xu, M. Wang, A.u. Rehman, A. Razzaq, J. Kang, R. Azmi, A.A. Said, F.H. Isikgor, T.G. Allen, D. Andrienko, U. Schwingenschlogl, F. Laquai, and S. De Wolf, Efficient and stable perovskite/silicon tandem solar cells through contact displacement by MgFx, Science 377, 302 (2022).
R. Azmi, E. Ugur, A. Seithkan, F. Aljamaan, A.S. Subbiah, G.T. Harrison, J. Liu, M.I. Nugraha, M.K. Eswaran, M. Babics, Y. Chen, F. Xu, T.G. Allen, A.u. Rehman, C.-L. Wang, T.D. Anthopoulos, U. Schwingenschlogl, M. De Bastiani, E. Aydin, and S. De Wolf, Damp-heat stable perovskite solar cells with tailored dimensionality 2D/3D heterojunctions, Science 376, 73 (2022).
M. De Bastiani, A.J. Mirabelli, Y. Hou, F. Grota, E. Aydin, T.G. Allen, J. Troughton, A.S. Subbiah, F.H. Isikgor, J. Liu, L. Xu, B. Chen, E. Van Kerschaver, D. Baran, M.F. Salvador, U.W. Paetzold, E.H. Sargent, and S. De Wolf, Efficient bifacial monolithic perovskite/silicon tandem solar cells via bandgap engineering, Nature Energy 6, 167 (2021).
E. Aydin, T.G. Allen, M. De Bastiani, L. Xu, J. Avila, M. Salvador, E. Van Kerschaver, and S. De Wolf, Interplay between temperature and bandgap energies determines outdoor performance of perovskite/silicon tandem solar cells, Nature Energy 5, 851 (2020).
S. De Wolf, J. Holovsky, S.-J. Moon, P. Löper, B. Niesen, M. Ledinsky, F.-J. Haug, J.-H Yum, and C. Ballif, Organometallic halide perovskites: sharp absorption edge and implications for photovoltaic applications, J. Phys. Chem. Lett. 5, 1035 (2014).