WIN Team

Siva Sivoththaman

Associate Professor, Electrical and Computer Engineering; Ontario Research Chair in Renewable Energy Technologies and Health

Professor Sivoththaman is a recognized expert in semiconductor materials, electronic devices, and fabrication technologies with a major focus on Photo-Voltaic (PV) energy conversion. His activities in PV include the development advanced PV materials and concepts for high performance, material-specific devices using thin-film and bulk semiconductor technologies.

One aspect of his nanotechnology related research involves the fabrication of Silicon (Si) nanopillars and nanowires from bulk crystals. Dr Sivoththaman is developing methods for the fabrication, detachment, manipulation, and re-deployment of the Si nanopillars primarily for PV applications but also for use in transistors, integrated logic circuits, electrochemical sensors and electroluminescent devices.

Specifically, plasma processing for Si nanowire formation, opto-thermal oxidation for passivation and dimensional control, and re-deployment techniques in SiO2 matrices are among his current research activities. Increased luminescent efficiency, quantum confinement effect, and new device architectures will be exploited to fabricate high performance PV devices.

Another nanotechnology research focus is the use of nanocrystalline Quantum Dots (QD) for PV applications. Current research involves the characterization of the size-dependent optical properties of the QDs (e.g., CdSe) as well as technology development for embbedding nanocrystallite QDs into polymeric thin films. QD-assisted spectral engineering will be used to overcome what is now considered performance limitations of traditional photovoltaic cells.

In addition to the material processing and fabrication aspects, the research also encompasses extensive material characterization activities such as high resolution transmission electron microscopy, scanning electron microscopy, electro and photo luminescence, etc. While the development of advanced concepts and technologies for PV is the main goal, improved cost performance and technology up-scalability are also key considerations in Dr Sivoththaman’s research.

Dr. Sivoththaman received the PhD degree from the University of Paris (France) in 1993. After his PhD he worked at the Interuniversity Micro Electronic Center – IMEC (Belgium) as a Senior Research Engineer for 6 years. In year 2000 he joined the Electrical and Computer Engineering department of the University of Waterloo as an Associate Professor and became Full Professor in 2007. Dr Sivoththaman received the Ontario Premier’s Research Excellence Award in 2002 and has held an Associate Natural Sciences and Engineering Research Council of Canada (NSERC) Industrial Research Chair during 2002-2006. He is a Senior Member of the Institute of Electrical and Electronics Engineers (IEEE).


  • PhD, University of Paris, France
  • MEng, AIT, Bangkok
  • BE, Madurai


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