Eric Colegrove is a staff scientist at NREL with more than 10 years of experience in cadmium telluride (CdTe)-based solar photovoltaics (PV) research and development. His graduate work focused on arsenic doping of single crystal CdTe thin-films deposited by molecular beam epitaxy (MBE). His postdoc appointment at NREL continued this work, expanding from single crystal model systems to large grain polycrystalline material and additional group V dopants including phosphorus and antimony. Recently, as a staff scientist, his research focus has shifted to challenges associated with implementing group V doping in polycrystalline thin-film devices while supporting various other inter-related research efforts to improve the performance and stability of CdTe based PV materials.


Ph.D., Physics, University of Illinois at Chicago

B.S., Physics, Hamline University 

Featured Work

Se Diffusion in CdTe Thin Films for Photovoltaics, Journal of Physics D: Applied Physics (2020)

Scalable Ultrafast Epitaxy of Large-Grain and Single-Crystal II-VI Semiconductors, Scientific Reports (2020)

Exceeding 20% Efficiency with In Situ Group V Doping in Polycrystalline CdTe Solar Cells, Nature Energy (2019)

Thin-Film Solar Cells with 19% Efficiency by Thermal Evaporation of CdSe and CdTe, ACS Energy Letters (2020)

Overcoming Carrier Concentration Limits in Polycrystalline CdTe Thin Films with In Situ Doping, Scientific Reports (2018)

Experimental and Theoretical Comparison of Sb, As, and P Diffusion Mechanisms and Doping in CdTe, Journal of Physics D: Applied Physics (2018)

Interface Engineering for 25% CdTe Solar Cells, ACS Applied Energy Materials (2018)

CdTe Solar Cells with Open-Circuit Voltage Breaking the 1 V Barrier, Nature Energy (2016)

High-Efficiency Polycrystalline CdS/CdTe Solar Cells on Buffered Commercial TCO-Coated Glass, Journal of Electronic Materials (2012)