His primary research areas lie in third generation photovoltaics (including perovskite solar cells), spectral conversion (up- and down-conversion), luminescent materials, light management, and solar-powered water treatment systems.

Research Funding and Outputs:
Published about >200 articles in top-ranking scientific journals as well as many conference papers (>30 presented as invited talks), 10 book chapters, and 6 international patents
h-index of 56 (Google Scholar 68)
Third-party research funding attracted is >€20 million.
Prizes: i) Best paper at PVSAT4 Conference, 2008, Bath, UK; ii) Mondialogo Engineering Award 2005, Berlin, Germany; iii) 2nd prize at the Energy Globe Awards Nov 2003, Linz, Austria.
Member of IEEE (Senior Member), OSA (life member), SPIE (life member)