Photodegradation of 2D Ruddlesden-Popper Perovskites: Consequences and Design Principles for Photoelectrochemical Applications.

ABSTRACT: Halide perovskites (HaP), with their exceptional optoelectronic properties and high-power conversion efficiencies in photovoltaic devices, hold promise for photoelectrochemical (PEC) applications in green fuel and chemical production. However, their stability in aqueous environments remains a challenge. This study investigates the stability and degradation mechanisms of the 2D Ruddlesden-Popper phase phenylethyl ammonium lead iodide (PEA⁽⁺⁾ ₂PbI₄) thin films in aqueous electrolytes under dark and illuminated conditions. While PEA⁽⁺⁾ ₂PbI₄ thin films appear to be thermodynamically stable in an aqueous electrolyte with phenylethyl ammonium iodide (PEAI), illumination causes significant photodegradation generating a deprotonate

SUBMITTER: Vasquez-Montoya MF 

PROVIDER: S-EPMC12463078 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature