Doping efficiency of single and randomly stacked bilayer graphene by iodine adsorption
作者： Olivier Renault , Anastasia Tyurnina , Jean-Pierre Simonato , Denis Rouchon , Denis Mariolle
DOI: 10.1063/1.4889747
关键词: Graphene 、 Doping 、 Bilayer 、 Bilayer graphene 、 Analytical chemistry 、 Iodide 、 Thermal stability 、 Monolayer 、 Materials science 、 Work function
摘要: We report on the efficiency and thermal stability of p-doping by iodine single randomly stacked, weakly coupled bilayer polycrystalline graphene, as directly measured photoelectron emission microscopy. The doping results in work function value increase 0.4–0.5 eV, with a higher degree uptake (2%) compared to layer (1%) suggesting intercalation bilayer. chemistry is identified accordingly I3− I5− poly iodide anionic complexes slightly concentration than monolayer likely attributed differences mechanisms. Temperature dependent in-situ annealing doped films demonstrated that remains efficient up 200 °C.
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