Charge Carrier Injection Electroluminescence with CO-Functionalized Tips on Single Molecular Emitters.

ABSTRACT: We investigate electroluminescence of single molecular emitters on NaCl on Ag(111) and Au(111) with submolecular resolution in a low-temperature scanning probe microscope with tunneling current, atomic force, and light detection capabilities. The role of the tip state is studied in the photon maps of a prototypical emitter, zinc phthalocyanine (ZnPc), using metal and CO-metal tips. CO-functionalization is found to have an impact on the resolution and contrast of the photon maps due to the localized overlap of the p-orbitals on the tip with the molecular orbitals of the emitter. The possibility of using the same CO-functionalized tip for tip-enhanced photon detection and high resolution atomic force is demonstrated. We study the electroluminescence of ZnPc, induced by charge carrier injecti

SUBMITTER: Dolezal J 

PROVIDER: S-EPMC7116301 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature