Scientists have reported the first real-time movies of the light-to-current conversion process in an organic solar cell.
Researchers show that the quantum-mechanical, wavelike nature of electrons and their coupling to the nuclei is of fundamental importance for the charge transfer in an organic photovoltaic device.
Real time quantum simulation of the conversion of light into current in an organic solar cell composed of a polymer chain, and a Fullerene buckyball.
The movie lasts for about 100 femtoseconds (fs), and is slowed down by about three hundred thousand billions of times with respect to the real phenomenon, in order to make the ultrafast time scale visible to humans.
The quantity depicted illustrates the wavelike oscillations of an electron after light is absorbed at time 0. Each time the upper “bulb” (actually a Fullerene molecule) lights up, a current flows from the bottom to the top of the miniature solar cell. The inset quantifies the amount of charge transfered from the polymer to the Fullerene as a function of time.
Original Story: First real-time movies of the light-to-current conversion in an organic solar cell — by Istituto Nanoscienze — CNR