The Organic Photonics and Electronics Group
The Organic Photonics & Electronics Group designs, fabricates and develops photonic and electronic devices based on novel organic compounds, either synthesized in-house or acquired via collaborators. The group is lead by professor Ludvig Edman and the research is divided into three main branches: Organic light-emitting electrochemical cells, organic transistors and organic photovoltaics.
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OPEG member Mattias Lindh successfully defended his licentiate thesis "Bilayer light-emitting electrochemical cells for signage and lighting applications".
The thesis includes two different but inherently connected methods to achieve patterned area light emission from light-emitting electrochemical cells in bilayer configuration. In the thesis, Mattias suggests that these devices can fill a gap in available light-patterning methods, which could accelerate the development of e.g., active packaging.
OPEG member Amir Asadpoordarvish successfuly defended his PhD thesis "Functional and Flexible Light-Emitting Electrochemical Cells".
The thesis presents methods to fabricate light-emitting electrochemical cells on flexible substrates, such as plastic and paper, as well as methods for encapsulation to ensure long-lifetime stable operation in ambient air.
OPEG member Christian Larsen successfully defended his PhD thesis "Fabricating designed fullerene nanostructures for functional electronic devices".
This thesis presents methods to fabricate fullerene-based nanostructures and patterns, and presents feasible methods to utilize these in order to realize functional electronic devices such as organic field-effect transistors and solar cells.
In the article "Inkjet Printed Bilayer Light-Emitting Electrochemical Cells for Display and Lighting Applications" we show that functional bilayer light-emitting electrochemical cells can be achieved through inkjet deposition of the electrolyte, and subsequent deposition of the emitting material as a separate layer. We demonstrate the versatility of the concept by making patterned static displays with 170 PPI and components with homogenous emission across a large area.
The work was published in the scientific journal Small (volume 10(20), pages 4148-4153, July 28, 2014), and was marketed as a frontispiece.