Molecular passivation is promising for improving the performance and operation stability of perovskite solar cells. Here, authors employ piperazine dihydriodide to strengthen adhesion to MA-free perovskite via −NH2I and Mulliken charge distribution, realizing charge-regulated molecular passivation.
- Dhruba B. Khadka
- Yasuhiro Shirai
- Kenjiro Miyano