Naslov
Photoinduced Segregation Behavior in 2D Mixed Halide Perovskite: Effects of Light and Heat

Autori
Leung, Tik Lun ; Ren, Zhilin ; Syed, Ali Asgher ; Grisanti, Luca ; Djurišić, Aleksandra B. ; Popović, Jasminka

Izvornik
ACS Energy Letters (2380-8195) 7 (2022); 3500-3508

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
2D Mixed Halide Perovskite

Sažetak
Photoinduced halide segregation (PHS) is a process of critical importance for the performance of perovskite solar cells with mixed halide absorber layers. However, PHS is still not well understood, especially in the case of layered mixed halide perovskites (MHPs), which are less commonly studied compared to their 3D counterparts. Here, we investigated temperature- and light-induced PHS in 2D MHPs with a phenylpropylammonium (PPA) spacer. We found that 2D PPA-based MHPs exhibited complex segregation behavior dependence on temperature and illumination intensity with the suppression of segregation observed at high temperature (attributed to the highly exothermic nature of the process) as well as moderate illumination intensities, illustrating the importance of additional processes present in this particular material, which exhibits distinctly different behavior compared to 2D MHPs with other aromatic cations.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA