Understanding Interface Dipoles at an Electron Transport Material/Electrode Modifier for Organic Electronics.

ABSTRACT: Interface dipoles formed at an electrolyte/electrode interface have been widely studied and interpreted using the "double dipole step" model, where the dipole vector is determined by the size and/or range of motion of the charged ions. Some electron transport materials (ETMs) with lone pairs of electrons on heteroatoms exhibit a similar interfacial behavior. However, the origin of the dipoles in such materials has not yet been explored in great depth. Herein, we systematically investigate the influence of the lone pair of electrons on the interface dipole through three pyridine derivatives B2-B4PyMPM. Experiments show that different positions of nitrogen atoms in the three materials give rise to different hydrogen bonds and molecular orientations, thereby affecting the areal density and di

SUBMITTER: Chen Y 

PROVIDER: S-EPMC8498986 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature