After that, he spent years working in Link?ping University, University of Massachusetts at Amherst, Air Force Research Lab, Argonne National Lab. In 2008, he joined Konarka Technologies as a Senior Scientist to develop all-plastic solar cells. His previous research includes all-plastic solar cells, polymer light-emitting diodes, photoactive polymers, liquid crystalline polymers, diblock copolymers, nanopatterning, and carbon nanotubes.