Sustainable eco-friendly printing of high-performance large-area organic photovoltaics via enhanced Laplace pressure gradient.

ABSTRACT: The coffee-ring effect during the green-printed process remains a significant bottleneck hindering the scalable fabrication and practical deployment of organic photovoltaics. Here, a fluorinated rheology modifier 1H,1H,10H,10H-Perfluoro-1,10-decanediol is brought to fine-tune the rheological properties of the active layer solution and the shape of the printed gas/liquid confined zone. The Laplace pressure gradient generated by the rheology modifier along printing direction effectively suppresses the coffee-ring effect. This results in enabling the formation of highly uniform large-area active layer films. The gas/liquid confined zone is qualitatively and quantitatively analyzed to understand the function of the Laplace pressure gradient. Meanwhile, the clear fiber network active layer morp

SUBMITTER: Liu S 

PROVIDER: S-EPMC12475277 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature