Effect of Pristine Graphene on Methylammonium Lead Iodide Films and Implications on Solar Cell Performance.

ABSTRACT: The relatively low stability of solar cells based on hybrid halide perovskites is the main issue to be solved for the implementation in real life of these extraordinary materials. Degradation is accelerated by temperature, moisture, oxygen, and light and mediated by halide easy hopping. The approach here is to incorporate pristine graphene, which is hydrophobic and impermeable to gases and likely limits ionic diffusion while maintaining adequate electronic conductivity. Low concentrations of few-layer graphene platelets (up to 24 × 10^-3 wt %) were incorporated to MAPbI₃ films for a detailed structural, optical, and transport study whose results are then used to fabricate solar cells with graphene-doped active layers. The lowest graphene content delays the degradation

SUBMITTER: Redondo-Obispo C 

PROVIDER: S-EPMC8715421 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature