Robust Unencapsulated Perovskite Solar Cells Protected by a Fluorinated Fullerene Electron Transporting Layer
We demonstrate novel fluorinated fullerene-based ETLs to enhance the materials and device stability without sacrificing the performance.
Technology Overview
By detailed device characterizations and theoretical modeling, we probed the key factors governing the device operational stability, which elucidated the origin of the degradation. Theses novel fluorinated fullerene-based ETLs not only act as hydrophobic protection layers but also can passivate the vacancy on the interface, which prohibits the water molecule penetration as well as the ion migration in the perovskite materials. As a result, the unencapsulated 5F-PCBP devices exhibit a remarkable photovoltaic operation lifetime under continuous humidity conditions, heat stress, and illumination environments.
Applications & Benefits
We demonstrated the greatly improved cell stability under water, showing that the PSCs could potentially be used in water and other aqueous media to facilitate the solar driven electrical chemical reactions. These demonstrations also showed that the perovskite photovoltaic technologies have the potential to be commercialized and used in a broad range of green energy and storage applications.
Robust Unencapsulated Perovskite Solar Cells Protected by a Fluorinated Fullerene Electron Transporting Layer
Author：Huang H.-H., Tsai H., Raja R., Lin S.-L., Ghosh D., Hou C.-H., Shyue J.-J., Tretiak S., Chen W., Lin K.-F., Nie W., Wang L.
Year：2021
Source publication： ACS Energy Lett. 2021, 6, 9, 3376–3385
Subfield Highest percentage：99% Materials Chemistry #3/292