(Jey) Dr. Jeyakumar Ramanujam is the Director of GVN SolarPower Incorporated. Prior to this role, he worked for over 13 years as a scientist specializing in solar cell research and development (R&D) in the Advanced Materials and Device Metrology Division at the National Physical Laboratory (CSIR) in New Delhi, as well as in the Department of Engineering Physics at McMaster University in Hamilton, Ontario.

In parallel, he was as an Affiliated Faculty member for 8 years in the Department of Electrical Engineering and Computer Science at Texas A&M University – Kingsville, TX, where he also contributed to solar cell research program.

Jey further contributed to the development of solar cells and hydrogenated amorphous silicon based thin-film transistors, which involved a 5-mask process for device integration. This work was carried out over 4 years in the Department of Electrical and Computer Engineering at the University of Waterloo, Waterloo, ON.

Dr. Ramanujam has authored more than 50 research and review articles in the field of solar materials and solar cells and has supervised several graduate students.

He is recognized as an expert in solar cell technology and materials characterization including AFM and XRF, with a proven track record in advancing R&D, as demonstrated by his publication record. His expertise spans solar cell fabrication, materials characterization, and device modeling.

Jey developed and utilized a 4-mask process technology for the fabrication of ion-implanted point-contact c-Si back-junction solar cells.

Notably, he was the first to design and report interdigitated point-contact back heterojunction a-Si:H/c-Si solar cells that feature no front-side grids, both p-type and n-type grids are located on the rear side of the device.

He has contributed two book chapters on solar cells and edited all 10 chapters in the upcoming book “Thin Film Photovoltaics: Single-Junction and Tandem”, to be published by Elsevier in November 2025.

Since early 2019, Dr. Ramanujam has been serving as an Associate Editor for the Solar Energy journal. He also served as Guest Editor for the special issue “Photovoltaic Recycling and Carbon-Neutral Manufacturing”, published by Elsevier in January 2025.

His ongoing research focuses on perovskite solar cells and the development of solar technologies that are both highly efficient and economically viable.