New Organic Solar Cell: Turn off energetic electrons

Reporter learned from China University of Science and Technology, the school micro-scale National Center for Physical Science Research Professor Luo Yi led by Professor Jiang Jun using first-principles calculations, the first proposed adaptive organic solar cell switch design, the program has low Cost, efficiency and adaptability.Relevant achievements have been published in the internationally renowned "Bulletin of Physical Chemistry".

For a long time organic photoelectric conversion efficiency of solar cells is not high, compared with inorganic semiconductor solar cells is still a big gap.

In the single-molecule organic solar cell developed in this study, the azobenzene optical switch molecule is inserted into a typical donor-acceptor system to form a donor-optical switch-acceptor system. The first-principles calculations show that , A system of research that inhibits charge recombination processes in organic solar cells through clever design and enables efficient charge separation and automatic switching of molecular conductivity and that other optical switch molecules and donor-acceptor systems can also be used In this compound system.

This design uses small organic molecules as a material to solve the problem that organic solar cells are prone to charge recombination and conductivity can not be switched, and is the world's first self-adaptive switching organic solar cell design.