The present invention, in one aspect, relates to a solar cell. In one embodiment, the solar cell includes an anode, a p-type semiconductor layer formed on the anode, and an active organic layer formed on the p-type semiconductor layer, where the active organic layer has an electron-donating organic material and an electron-accepting organic material.
STATEMENT AS TO RIGHTS UNDER FEDERALLY-SPONSORED RESEARCH
This invention was made with government support under grant number DE-FG02-06ER46320 awarded by the Department of Energy. The government has certain rights in the invention.