Precise measurement of phenomenon advances solar cell understanding

Researchers at Washington University in St. Louis have shed light on a basic process that could improve future solar cells. Dewey Holten, Ph.D., professor of chemistry in Arts & Sciences and graduate student Hee-eun Song have directly measured the rate of hole transfer between identical porphyrin compounds in their ground states. These results are key to understanding the fundamental processes underlying charge separation in this sort of structure and have applications for improving the efficiency of solar cells.