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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Licentiate thesis "Bilayer Light-Emitting Electrochemical Cells for Signage and Lighting Applications"February 2016

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.

May 2015

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.

January 2015

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.

July 2014

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.

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The p-n junction formation

This short video shows the p-n junction formation required for light emission in a light-emitting electrochemical cell. Play by clicking the image below.

Contact information

Postal address

The Organic Electronics and Photonics Group

Department of Physics
Linnaeus väg 20
Umeå University
SE-901 87 Umeå

Visiting adress

Fysikhuset, 2nd floor
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