Purdue Researchers Announce Solar Cell Breakthrough
Researchers at Purdue University have developed a new solar cell material with increased efficiency and reduced manufacturing costs. The university is patenting the technology, which could lead to more affordable and accessible solar power solutions.
- The research focuses on perovskite solar cells, which are known for being cheaper to manufacture than traditional silicon-based cells and can be made flexible. - A team led by Letian Dou, the Charles Davidson Associate Professor of Chemical Engineering, developed new multifunctional ligands that act as a molecular "glue" at the interface of the perovskite material and the charge collection layer. - The application of these new ligands has increased the power conversion efficiency to nearly 25%, a significant improvement from the sub-20% efficiency of the cells without them. - This innovation also dramatically improves the solar cells' durability, extending their operational lifetime to over 2,400 hours when tested at 65 degrees Celsius, which is four times longer than cells without the ligands. - The researchers are aiming for a future operational lifetime of more than 10,000 hours and are working to apply the technology to larger solar modules. - In separate research, a team led by Dou also developed a lead-free perovskite material with a hybrid organic-inorganic "sandwich" structure, addressing the toxicity concerns associated with lead-based perovskites. - Perovskite solar cells can be manufactured using simple, low-energy techniques similar to printing, which significantly lowers their production cost compared to silicon cells. - The Purdue Research Foundation Office of Technology Commercialization has filed for patent protection on the intellectual property related to these innovations.
