Understanding the Degradation of Methylenediammonium and Its Role in Phase-Stabilizing Formamidinium Lead Triiodide

• Published in: Journal of the American Chemical Society Vol. 145; no. 18; pp. 10275 - 10284
• Main Authors: Duijnstee, Elisabeth A., Gallant, Benjamin M., Holzhey, Philippe, Kubicki, Dominik J., Collavini, Silvia, Sturdza, Bernd K., Sansom, Harry C., Smith, Joel, Gutmann, Matthias J., Saha, Santanu, Gedda, Murali, Nugraha, Mohamad I., Kober-Czerny, Manuel, Xia, Chelsea, Wright, Adam D., Lin, Yen-Hung, Ramadan, Alexandra J., Matzen, Andrew, Hung, Esther Y.-H., Seo, Seongrok, Zhou, Suer, Lim, Jongchul, Anthopoulos, Thomas D., Filip, Marina R., Johnston, Michael B., Nicholas, Robin J., Delgado, Juan Luis, Snaith, Henry J.
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 10.05.2023
• Subjects: ammonium; lead; solar energy

Formamidinium lead triiodide (FAPbI3) is the leading candidate for single-junction metal–halide perovskite photovoltaics, despite the metastability of this phase. To enhance its ambient-phase stability and produce world-record photovoltaic efficiencies, methylenediammonium dichloride (MDACl2) has be...