3D-Morphology Reconstruction of Nanoscale Phase-Separation in Polymer Memory Blends
2015 (English)In: Journal of Polymer Science Part B: Polymer Physics, ISSN 0887-6266, E-ISSN 1099-0488, Vol. 53, no 17, 1231-1237 p.Article in journal (Refereed) Published
In many organic electronic devices functionality is achieved by blending two or more materials, typically polymers or molecules, with distinctly different optical or electrical properties in a single film. The local scale morphology of such blends is vital for the device performance. Here, a simple approach to study the full 3D morphology of phase-separated blends, taking advantage of the possibility to selectively dissolve the different components is introduced. This method is applied in combination with AFM to investigate a blend of a semiconducting and ferroelectric polymer typically used as active layer in organic ferroelectric resistive switches. It is found that the blend consists of a ferroelectric matrix with three types of embedded semiconductor domains and a thin wetting layer at the bottom electrode. Statistical analysis of the obtained images excludes the presence of a fourth type of domains. The criteria for the applicability of the presented technique are discussed. (c) 2015 Wiley Periodicals, Inc.
Place, publisher, year, edition, pages
John Wiley & Sons, 2015. Vol. 53, no 17, 1231-1237 p.
AFM; phase separation; organic memory; selective dissolution; thin films
IdentifiersURN: urn:nbn:se:liu:diva-120640DOI: 10.1002/polb.23769ISI: 000358198800004OAI: oai:DiVA.org:liu-120640DiVA: diva2:847598
Funding Agencies|European Communitys Seventh Framework Programme under MOMA project 2015-08-202015-08-202016-05-27