Uncovering the out-of-plane nanomorphology of organic photovoltaic bulk heterojunction by GTSAXS.

ABSTRACT: The bulk morphology of the active layer of organic solar cells (OSCs) is known to be crucial to the device performance. The thin film device structure breaks the symmetry into the in-plane direction and out-of-plane direction with respect to the substrate, leading to an intrinsic anisotropy in the bulk morphology. However, the characterization of out-of-plane nanomorphology within the active layer remains a grand challenge. Here, we utilized an X-ray scattering technique, Grazing-incident Transmission Small-angle X-ray Scattering (GTSAXS), to uncover this new morphology dimension. This technique was implemented on the model systems based on fullerene derivative (P3HT:PC₇₁BM) and non-fullerene systems (PBDBT:ITIC, PM6:Y6), which demonstrated the successful extraction of the quant

SUBMITTER: Xia X 

PROVIDER: S-EPMC8553947 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature