Jeff is an EERE Postdoctoral Fellow mentored by NREL scientist Dr. Joseph M. Luther in the Chemical Materials and Nanoscience team. While an undergraduate, he began his research in nanoscience, studying the fluorescence response of single quantum dot biosensors. His interest in nanoscience and energy took him to the University of Notre Dame where he joined the laboratory of Prof. Prashant V. Kamat. Under the direction of Prof. Kamat, he studied ultrafast charge transfer across semiconductor heterojunctions in solar cells. In 2013 his research transitioned into the field of lead halide perovskite solar cells where he developed novel device architectures using all inorganic materials and provided detailed insight into their deleterious interactions with atmospheric water. In 2015, the University of Notre Dame College of Engineering awarded him with the Eli J. and Helen Shaheen Graduate School Award in Engineering for his doctoral work.
Christians joined NREL as a postdoctoral scholar in the group of Dr. Joseph M. Luther, working in NREL’s perovskite photovoltaics team. His postdoctoral work has centered on understanding phase transitions, thermodynamic stability, and device-level stability of this potentially transformative material class. He was awarded the prestigious EERE Postdoctoral Research Award in 2016 by the Department of Energy Office of Energy Efficiency and Renewable Energy to continue his work on halide perovskite photovoltaics.
Halide perovskite photovoltaics
Ph.D. Chemical and Biomolecular Engineering, University of Notre Dame
B.S.E Chemical Engineering and Chemistry, Calvin College
Schelhas, L. T.; Christians, J. A.; Berry, J. J.; Toney, M. F.; Tassone, C. J.; Luther, J. M.; Stone, K. H. “Monitoring a Silent Phase Transition in CH3NH3PbI3 Solar Cells via Operando X-ray Diffraction,” ACS Energy Letters, 2016, 1, 1007-1012.
Swarnkar, A.; Marshall, A. R.; Sanehira, E. M.; Chernomordik, B. D.; Moore, D. T.; Christians, J. A.; Chakrabarti, T.; Luther, J. M. “Quantum Dot-Induced Phase Stabilization of α-CsPbI3 Perovskite for High-Efficiency Photovoltaics,” Science, 2016, 354, 6308, 92-95.
Nenon, D. P.; Christians, J. A.; Wheeler, L. M.; Blackburn, J. L.; Sanehira, E. M.; Dou, B.; Olsen, M. L.; Zhu, K.; Berry, J. J.; Luther, J. M. “Structural and Chemical Evolution of Methylammonium Lead Halide Perovskites During Thermal Processing from Solution.” Energy & Environmental Science, 2016, 9, 2072-2082.
Manser, J. S.; Christians, J. A.; Kamat, P. V. “Intriguing Optoelectronic Properties of Metal Halide Perovskites,” Chem. Rev. 2016, 116, 12956-13008.
Christians, J. A.; Miranda Herrera, P. A.; Kamat, P. V. “Transformation of the Excited State and Photovoltaic Efficiency of CH3NH3PbI3 Perovskite upon Controlled Exposure to Humidified Air,” J. Am. Chem. Soc. 2015, 137, 1530-1538.
Christians, J. A.; Fung, R. C. M.; Kamat, P. V. “An Inorganic Hole Conductor for Organo-Lead Halide Perovskite Solar Cells. Improved Hole Conductivity with Copper Iodide,” J. Am. Chem. Soc. 2014, 136, 758–764.