ArticleACS nano2026
Area-Selective Atomic/Molecular Layer Deposition of Europium-Organic Thin Films on Graphene and Other 2D Materials for Photoluminescent Heterostructures.
Article in ACS nano, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Developing a controlled, defect-free, and spatially selective deposition of molecular and hybrid thin films on 2D materials remains a key challenge for their integration into multifunctional optoelectronic systems due to their surface inertness. Here, we demonstrate area-selective atomic/molecular layer deposition of europium-organic (Eu-BDC) thin films on graphene utilizing direct femtosecond laser two-photon oxidation. The laser dose defines the density of nucleation sites and precisely controls Eu-BDC film thickness and uniformity. By optimizing the deposition parameters and carefully choosing a transfer polymer, we achieve over 90% selectivity and high film homogeneity in the activated areas with submicron resolution. Upon 532 nm excitation, graphene/Eu-BDC exhibits strong emission at 612 nm with additional lines at 579, 592, and 652 nm. It also shows a green band at ∼566 nm, which is not observed on Si/SiO
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