Dr. Rohatgi has made seminal contributions to the fundamental understanding of advanced photovoltaic devices;  rapid thermal processing of dielectrics and solar cells;  impurities and defects in silicon;  science and technology of dielectrics for silicon surface passivation and antireflection coating;  and design and fabrication of high efficiency cells on low-cost silicon materials.  He has published over 200 technical papers in various journals and proceedings and holds more than 10 patents.  Dr. Rohatgi became an IEEE fellow in 1991, received the Westinghouse Engineering Achievement Award in 1984 and the Georgia Tech Distinguished Professor Award in 1996 for his sustained contributions to the field of photovoltaics.  He received the Electrochemical Society Thomas D. Callinan Award in 1999 for the pioneering work on rapid thermal processing of dielectrics and solar cells.  Dr. Rohatgi is the General Chair for the 28^th IEEE Photovoltaic Specialists Conference and co-organizer of the Electrochemical Society Symposium on Photovoltaics for the 21^st Century.  He is a member of the editorial board for journals of Solar Energy, Materials and Solar Cells and Progress in Photovoltaics.