The effect of caesium alloying on the ultrafast structural dynamics of hybrid organic-inorganic halide perovskites.

ABSTRACT: Hybrid inorganic-organic perovskites have attracted considerable attention over recent years as promising processable electronic materials. In particular, the rich structural dynamics of these 'soft' materials has become a subject of investigation and debate due to their direct influence on the perovskites' optoelectronic properties. Significant effort has focused on understanding the role and behaviour of the organic cations within the perovskite, as their rotational dynamics may be linked to material stability, heterogeneity and performance in (opto)electronic devices. To this end, we use two-dimensional IR spectroscopy (2DIR) to understand the effect of partial caesium alloying on the rotational dynamics of the methylammonium cation in the archetypal hybrid perovskite CH₃NH

SUBMITTER: Gallop NP 

PROVIDER: S-EPMC9624371 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature