Toward Water-Resistant, Tunable Perovskite Absorbers Using Peptide Hydrogel Additives.

ABSTRACT: In recent years, hydrogels have been demonstrated as simple and cheap additives to improve the optical properties and material stability of organometal halide perovskites (OHPs), with most research centered on the use of hydrophilic, petrochemical-derived polymers. Here, we investigate the role of a peptide hydrogel in passivating defect sites and improving the stability of methylammonium lead iodide (MAPI, CH₃NH₃PbI₃) using closely controlled, in situ X-ray photoelectron spectroscopy (XPS) techniques under realistic pressures. Optical measurements reveal that a reduction in the density of defect sites is achieved by incorporating peptide into the precursor solution during the conventional one-step MAPI fabrication approach. Increasing the concentrat

SUBMITTER: Flavell T 

PROVIDER: S-EPMC11480935 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature