Nanoscale Transient Absorption Spectroscopy for Characterizing Organic Solar Cells
Project Leaders: C. Li
Research Goals:
The goal of this project is to develop a nanometer resolution transient absorption microscope to study the charge-transfer states dynamics in bulk heterojunction organic solar cells. Ultrafast transient absorption spectroscopy is commonly used to study carrier and energy dynamics in materials research. With the development of nanoscale devices and materials, e.g. charge-transfer states in nanometer-size domains of organic solar cells, it is desirable to characterize such properties within a nanometer-size domain. This project will use femtosecond pump-probe method, as well as point spread function engineering technique, to explore the fundamental properties of organic solar cells within nanoscale domains.