Real-Time Probing of Morphological Evolution and Recrystallization During Solvent Annealing in Blade-Coated All-Polymer Organic Solar Cells Using In Situ X-Ray Scattering.

ABSTRACT: Optimizing the morphology of the active layer is crucial for achieving high photovoltaic conversion efficiency in all-polymer solar cells (APSCs). Solvent vapor annealing (SVA) is an essential post-treatment strategy for controlling active layer morphology. However, most current SVA are conducted ex situ, limiting their ability to accurately reveal the morphological evolution of active layers of APSCs. In this study, in situ synchrotron radiation GIWAXS and in situ UV-vis spectroscopy combined with GISAXS is used to monitor the morphological evolution of PM6/PY-IT blends during the SVA process in real-time. Results showed that the PY-IT absorption peak exhibited a red shift under a nonpolar carbon disulfide vapor, while a blue shift is observed during the SVA process with a polar chlorofor

SUBMITTER: Hao J 

PROVIDER: S-EPMC12463108 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature