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

ACS Appl Mater Interfaces. 2016 Jun 15;8(23):14513-20. doi: 10.1021/acsami.6b02169. Epub 2016 Jun 3.

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).

Keywords: ambient stability; large grain; perovskite; single crystal; solar cell.