bei Google ScholarTitelangaben
Siegert, Tobias ; Kiel, Lorenz ; Pahwa, Prerna ; Witt, Christina ; Schötz, Konstantin ; Kahle, Frank-Julian ; Panzer, Fabian ; Oberhofer, Harald ; Moos, Ralf ; Grüninger, Helen ; Köhler, Anna:
Exploring the Phase Diagram of FAPbI3 Using In-Situ Reflectance Spectroscopy.
2026
Veranstaltung: 9th International Conference on Perovskite Solar Cells and Optoelectronics - PSCO 2026
, 23.9.-25.9.2026
, Lausanne, Switzerland.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Vortrag
)
Angaben zu Projekten
| Projekttitel: |
Offizieller Projekttitel Projekt-ID SFB 1585: Strukturierte Funktionsmaterialien für multiplen Transport in nanoskaligen räumlichen Einschränkungen 492723217 |
|---|---|
| Projektfinanzierung: |
Deutsche Forschungsgemeinschaft |
Abstract
Among suitable halide perovskites for photovoltaic applications, FAPbI3 is a promising absorber for solar cells. However, the phase stability of FAPbI3 remains challenging, as the photoactive black α-phase is prone to degrade into the inactive yellow δ-phase. To address this issue, we evaluate the temperature- and pressure-dependence of phase transitions using in situ reflection measurements during (hot-)pressing δ-FAPbI3 powder. We monitor phase transitions as we increase the temperature at constant pressure and the pressure at constant temperature. We show that the 4H phase is mainly pressure-induced and that the δ to α phase transition temperature of our powder-based thick films decreases with increasing pressure.