Correlating light-induced deep defects and phase segregation in mixed-halide perovskites

• Published in: Journal of materials chemistry. A, Materials for energy and sustainability Vol. 1; no. 36; pp. 18928 - 18938
• Main Authors: Ridzo ová, Katarína, Grill, Roman, Peter Amalathas, Amalraj, Dzur ák, Branislav, Neykova, Neda, Horák, Lukáš, Fiala, Peter, Chin, Xin Yu, Wolff, Christian M, Jeangros, Quentin, Holovský, Jakub
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 20.09.2022
• Subjects: chemistry; Crystal defects; electric current; empirical models; Fourier transforms; Grain size; Interstitials; Iodides; Light effects; Perovskites; Photoelectric effect; Photoluminescence; Photons; Photovoltaic cells; Solar cells; Spectroscopy

Mixed-halide perovskites are highly promising materials for tandem solar cells. The phenomenon of phase segregation, however hinders their application. Here, we combine Fourier-Transform photocurrent spectroscopy with photoluminescence and current density-voltage ( J - V ) measurements to study the...