C. Energy Materials

The storage and production of clean energy via the use of sunlight is one of the most important challenges facing 21st century society. Therein semiconductor materials provide promising ways to harness the sun’s energy. They absorb photons to potentially produce free electrons and holes in the conduction and valence bands respectively. The development of new materials and devices to efficiently and cost-effectively harness solar energy remains one of the key challenges for science and technology today.

In collaboration with the Qi Unit, the Femtosecond Spectroscopy Unit studies the microscopic, ultrafast dynamics of photogenerated electrons in a variety of solar cell materials with different spectroscopic techniques.