Large Grained Perovskite Solar Cells Derived from Single-Crystal Perovskite Powders with Enhanced Ambient Stability

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Abstract
In this study, we demonstrate the large grained perovskite solar cells prepared from precursor solution comprising single-crystal perovskite powders for the first time. The resultant large grained perovskite thin film possesses a negligible physical (structural) gap between each large grain and is highly crystalline as evidenced by its fan-shaped birefringence observed under polarized light, which is very different from the thin film prepared from the typical precursor route (MAI + PbI2).
Funding Information
  • Office of Naval Research (N00014-14-1-0246)
  • Laboratory Directed Research and Development
  • U.S. Department of Energy (DE-EE0006710)
  • Boeing-Johnson Foundation
  • Asian Office of Aerospace Research and Development (FA2386-11-1-4072)

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