http://www.cam.ac.uk/research/news/hybrid-materials-could-smash-the-solar-efficiency-ceiling Typically solar cells work by having a photon hit the solar cell material, which could be organic (e.g. pentacene) or inorganic (e.g. silicon), producing an exciton. But there are two types of exciton. One, typically made by inorganic solar materials like silicon, is a spin-singlet exciton. It has one electron and is easy to harvest as electrical current. The other is what they call a spin-triplet exciton. This is typically produced by organic material such as pentacene. It has two electrons but spins in such a way that it's hard to make use of, and hard to transfer to inorganic materials as electrical current. A University of Cambridge team has been working on a way to transfer those difficult but potentially more powerful spin-triplet excitons from the organic solar material into an inorganic semiconductors. They believe they've found the answer and have published their studies in the journal, Nature Materials today. Supposedly they found ways to transfer the triplet excitons to a semiconductor with over 95% efficiency. Once they're transferred to the inorganic semiconductor, the electrons are easily harvested. Organic semiconductors are supposedly low cost and easily processable, so this could actually be a pretty impactful breakthrough. The hybrid organic-inorganic system could boost solar cell efficiency quite a bit. The team is working on a cheap organic coating that could be used to boost the power conversion efficiency of silicon solar cells.