Joseph J. Berry is a Distinguished Alumnus in the Department of Physics at Penn State, and Senior Research Fellow at the National Renewable Energy Laboratory working on halide perovskite solar cells. His efforts at NREL emphasize relating basic interfacial properties to relevant device level behaviors in traditional and novel semiconductor heterostructures including oxides, organics and most recently hybrid semiconductors.
He is also a principal investigator on the NREL lead Department of Energy, Solar Energy Technology Offices “Advanced Perovskite Cells and Modules” program as well as being the director of the US-Manufacturing of Advanced Perovskites (US-MAP) Consortium, a Fellow at RASEI a joint energy institute between the University Colorado Boulder and NREL and an Associate Professor of Physics at the University of Colorado Boulder. He was a Visiting Professor of Materials Science and Engineering at the African University of Science and Technology (AUST, Abuja, Nigeria). He received his PhD from the Department of Physics at PSU in 2001.