My research focuses on the photophysics of organic optoelectronic materials and nanodevices. We develop state-of-the-art ultrafast laser spectroscopy tools to observe and control molecular-scale dynamics in plastic solar cells, flexible transistors, quantum-dot photodetectors and other functional nanosystems. The prospective work includes charge-transport properties of proteins, ultrafast switching of organic transistors, and time-resolved spectroscopy on the scale of single molecules.