PMMA as an effective protection layer against the oxidation of P3HT and MDMO-PPV by ozone

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Früh A, Egelhaaf HJ, Hintz H, Quinones D, Brabec C, Peisert H, Chassé T
Zeitschrift: Journal of Materials Research
Verlag: Cambridge University Press
Jahr der Veröffentlichung: 2018
Seitenbereich: 1-11
ISSN: 0884-2914
Sprache: Englisch


Abstract

The protective effect of poly(methylmethacrylate) (PMMA) cover layers against the degradation of π-conjugated polymers by ozone and photo-oxidation, respectively, has been investigated by UV/Vis spectroscopy. The PMMA
films were cast from solution at thicknesses between 20 and 100 nm on
top of films of poly(3-hexylthiophene) and
poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene]. PMMA layers of more than 65 nm in thickness reduce the oxidation rate of the π-conjugated polymers under 15 ppm of ozone in the dark by more than three orders of magnitude, whereas photo-oxidation rates under dry and humid air remain unaffected. The PMMA cover layers are hardly affected by ambient ozone over thousands of hours. Calculations of ozone and oxygen fluxes through the PMMA films reveal that ozonation rates are limited by the diffusion of ozone, whereas photo-oxidation rates are not limited by the diffusion of oxygen, due to the much larger pressure gradient of the latter.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Brabec, Christoph Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)


Einrichtungen weiterer Autorinnen und Autoren

Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern)
Eberhard Karls Universität Tübingen


Forschungsbereiche

Neue Materialien und Prozesse
Forschungsschwerpunkt einer Fakultät: Technische Fakultät


Zitierweisen

APA:
Früh, A., Egelhaaf, H.J., Hintz, H., Quinones, D., Brabec, C., Peisert, H., & Chassé, T. (2018). PMMA as an effective protection layer against the oxidation of P3HT and MDMO-PPV by ozone. Journal of Materials Research, 1-11. https://dx.doi.org/10.1557/jmr.2018.74

MLA:
Früh, Andreas, et al. "PMMA as an effective protection layer against the oxidation of P3HT and MDMO-PPV by ozone." Journal of Materials Research (2018): 1-11.

BibTeX: 

Zuletzt aktualisiert 2018-30-09 um 14:50