Methylammonium lead iodide perovskites are often deemed unstable, partly due to residual lead iodide in films. Here, the authors employ a precursor-engineering strategy using pre-synthesized methylammonium lead iodide single crystals to eliminate lead iodide, achieving enhanced power conversion efficiency and long-term stability, with significant implications for both outdoor and indoor photovoltaic applications.
- Shafna Kunnathumpeedika
- Vidya Kattoor
- Tzu-Chien Wei
