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IMO-IMOMEC lectures on advanced materials

IMO-IMOMEC lectures on advanced materials
PRACTICAL

Feb 12, 2016


Universiteit Hasselt

campus Diepenbeek

Agoralaan Gebouw D

3590 Diepenbeek

Lokaal Lecture room A5


CONTACT

Prof. dr. Dirk VANDERZANDE

32-11-268321

dirk.vanderzande@uhasselt.be


Prof. Dr. Dirk Vanderzande (IMO-IMOMEC director) would like to invite you to this lecture on advanced materials.

Speaker: Prof. Dr. Jorge Morgado, University of Lisbon and Instituto de telecomunicações, Instituto superior técnico, Lisboa, Portugal.

12 February 2016, 11:00 -12:00

Lecture room A5, Building D, Hasselt University, Campus Diepenbeek.

Abstract:

In this presentation, two examples of the influence of organic layers morphology on device performance will be discussed.
We have been studying the role of phenanthrolines (BPhen and BCP) as electron-extraction layers on the performance of organic photovoltaics. In particular, we found that both materials grow as nanostructured layers, with columnar grain-like structures, with pillars having heights much larger than the average layer thickness. Yet, we found that the presence of such interlayers, in combination with LiF/Al electrodes, leads to significant efficiency improvements.
The second part is devoted to the study of light-emitting diodes based on polymer blends, which combine polymers with efficient energy transfer. We found that the use of a solvent additive leads to a suppression of that energy transfer process, which we attribute to changes in the blend film morphology.