Electronic structure of hybrid interfaces of poly(9,9-dioctylfluorene)
2000 (English)In: Chemical Physics Letters, ISSN 0009-2614, Vol. 321, no 5-6, 379-384 p.Article in journal (Refereed) Published
In this Letter we report the results of a study of the energy level alignment at interfaces between ultra-thin films of poly(9,9-dioctylfluorene) and AlxOy SiO2 or gold substrates, prepared under ambient (air) conditions. In all the cases, vacuum level alignment occurs, and the work function tracks that of the substrates. There is no evidence of band bending in the pristine polymer layers up to 1100 Angstrom in film thickness. Upon increasing the electrical conductivity of the polymer films by continuous doping with sodium under ultra-high-vacuum conditions, the energy levels of the polymer film gradually shift towards higher binding energies and finally become substrate independent. (C) 2000 Elsevier Science B.V. All rights reserved.
Place, publisher, year, edition, pages
2000. Vol. 321, no 5-6, 379-384 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-49756OAI: oai:DiVA.org:liu-49756DiVA: diva2:270652