Event Information
Excited State Decay and Electron Transfer in Organic Semiconductors
- Abstract:
Predicting the fluorescence efficiency and the carrier mobility from first-principles for organic semiconductors are important to design materials with good performances. We will present our recent theoretical developments in these respects. Firstly, we have developed an analytical formalism for the non-radiative decay rate from excite state to the ground state considering the difference in excited state and ground state potential energy surfaces. Taking example of tetraphenylbutadiene, our theory can successfully describe the fluorescence behaviors with respect to temperature and aggregation effects. It is found that the low-frequency mode mixings have a strong influence in determining the fluorescence efficiency. Further, the exotic aggregation induced luminescence is explained.
I will also talk about using Marcus electron transfer theory to design transport materials.
Host: Weitao Yang
Theory Group Seminar