ORaCEL Researchers Discover Factors Enabling Stable Organic Solar Cells
ORaCEL -led researchers discovered that use of polymer and small-molecule semiconductors with relatively poor miscibility is a key to the long-term stability of the morphology and photovoltaic performance of bulk heterojunction films used in organic solar cells.
The researchers suggest in their recent Nature Materials Article that the key to stable OSCs is not to use miscible components, but rather to use components that interact so unfavorably that they effectively freeze in place in a well-mixed blend. The team found that the most stable organic solar cells contained a small molecule with a high glass transition temperature and a polymer with a large elastic modulus; in other words, a highly rigid material. Detailed information can be found in the following news outlets:
