Luminescence probing of crystallization in a polymer film
2000 (English)In: Journal of Applied Physics, ISSN 0021-8979, Vol. 87, no 12, 8549-8556 p.Article in journal (Refereed) Published
We report studies of a thin film multilayer stack including a highly emissive substituted polythiophene, poly[3-(2,5-dioctylphenyl)thiophene]. Analysis of the photoluminescence spectra revealed an inhomogeneous polymer film. X-ray diffraction studies attribute the existence of an inhomogeneous film as originating from crystallization of the polymer. We used the interference effect of light to detect the region of crystallization in the film. Photoluminescence and absorption were redshifted upon crystallization and displayed an enhanced vibronic structure. Comparison between calculated and measured photoluminescence shows that the crystallization starts from the top of the film and not from the supporting substrate. (C) 2000 American Institute of Physics. [S0021- 8979(00)08112-3].
Place, publisher, year, edition, pages
2000. Vol. 87, no 12, 8549-8556 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-49737OAI: oai:DiVA.org:liu-49737DiVA: diva2:270633