Interface dipole at organic/metal interfaces and organic solar cells
2004 (English)In: Solar Energy Materials and Solar Cells, ISSN 0927-0248, Vol. 83, no 2-3, 147-168 p.Article in journal (Refereed) Published
In organic-based solar cells, the interface dipole present at the organic/metal interface participates to the collection and injection of charges between the electrode and the active organic material. The origins of the interface dipole is illustrated for a model system of the organic/metal interface composed of the electron-donor molecule p-phenylenediamine (PPDA) interacting with a nickel surface. The interface dipole created at the PPDA/Ni interface is characterized in a joint experimental and theoretical study using photoelectron spectroscopy and density functional theory calculations. The formation of strong interface dipoles upon chemisorption of a PPDA mono-layer is accompanied by a significant decrease (1.5eV) of the metal work function reaching 3.6eV.
Place, publisher, year, edition, pages
2004. Vol. 83, no 2-3, 147-168 p.
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-22589DOI: 10.1016/j.solmat.2004.02.022Local ID: 1865OAI: oai:DiVA.org:liu-22589DiVA: diva2:242902