Sayak Bhattacharya

Assistant Professor (ECE)
PhD (2016), IIT Delhi

Dr. Sayak Bhattacharya obtained his PhD from Dept. of Electrical Engineering, IIT Delhi in 2016. Before joining IIIT Delhi, he was appointed as a Postdoctoral Fellow in Prof. Sajeev John’s group at the University of Toronto since 2016. His current research focus is light-trapping and energy harvesting in ultra-thin, flexible, silicon photonic crystal solar cells. His broad area of interest is designing semiconductor devices that rely on photonic crystal mediated strong light-matter interaction.

He is the recipient of SPIE Best Student Paper Award in the 12th International Conference on Fiber Optics and Photonics, 2014. His paper (co-authored with Prof. John), “Designing High-Efficiency Thin Silicon Solar Cells Using Parabolic-Pore Photonic Crystals", has been featured as Editor’s Suggestion in the April, 2018 issue of Physical Review Applied for illustrating a roadmap towards 28−29% conversion efficiency (well beyond the current world-record efficiency of 26.7%) in silicon solar cells. He has served as a reviewer for Renewable & Sustainable Energy Reviews.


Phone: 011-26907356
Office: B-603 (R&D Block)

Research Interests: 
Ultra-thin and high-efficiency photovoltaics, Strong light-matter interaction in photonic crystals
Teaching Interests: