Oxygen- and Water-Based Degradation in [6,6]-Phenyl-C-61-Butyric Acid Methyl Ester (PCBM) Films
2014 (English)In: ADVANCED ENERGY MATERIALS, ISSN 1614-6832, Vol. 4, no 6Article in journal (Refereed) Published
Effects of in situ oxygen/water exposure on the energetics of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) films are presented. For oxygen exposure, the work function is downshifted by ≈0.15 eV compared to the ideal integer charge transfer (ICT) curve for pristine PCBM, which is incompatible with significant introduction of electron trap states or p-doping. Water induces the highest occupied molecular orbital (HOMO) structure to undergo strong, irreversible modifications accompanied by a chemical interaction with PCBM.
Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2014. Vol. 4, no 6
electronic structure; integer charge transfer; oxygen; water exposure; degradation; photoelectron spectroscopy
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-106975DOI: 10.1002/aenm.201301272ISI: 000334790000005OAI: oai:DiVA.org:liu-106975DiVA: diva2:721379