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Microstructure and local energy transfer of organic photovoltaics

The performance of organic photovoltaics crucially depends on the local polymer organization. By employing 2D POLarization IMaging we can reveal the microstructure of bulk heterojunction all-polymer blends as well as of thin conjugated polymer films prepared by the floating film transfer method [1]. Localized correlations of several 2D POLIM parameters allow for retriving the local polymer chain organisation within the liquid spread polymer film.

[1] D. Täuber, W. Cai, O. Inganäs, I.G. Scheblykin: Macroscopic Domains within an Oriented TQ1 Film Visualized Using 2D Polarization Imaging, ACS Omega doi: 10.1021/acsomega.6b00264.

People involved:


Daniela Täuber

Juanzi Shi

Yuxi Tian


*Daniela Täuber

Techniques used



Fluorescence lifetime measurements

Fluorescence and absorption spectroscopy