Postdoctoral Opportunity in Physics, Umeå University, Sweden

Expires on: 04/30/2024

Light extraction of thin film emissive devices, such as light-emitting electrochemical cells (LECs), is an active research area because of the low efficiency of such conventional planar devices to outcouple light to the far field. Plasmonic excitations, collective oscillations of free electrons in metallic nano-objects driven by electromagnetic radiation, enable control of light scattering with extreme precision and can thus be used as a tool to improve the emission efficiency in devices such as LECs.

The main goal of this project is to show that it is possible to improve the LEC performance by recovering a large amount of the lost power by using plasmon-driven light scattering and waveguiding. Specifically, we aim to redirect at least 50% of the “lost” light emission to the far field, thus making the LEC competitive on the market and enable the development of a stable and green light source. Moreover, this project has the ambition to address other challenges in the field of light-emitting technologies, such as improving device sustainability and stability. For the latter task, we will also study how the decay rate enhancement of a plasmon-exciton system can increase device stability, while maintaining the emission efficiency, by using a diverse set of experimental techniques, including pump-probe spectroscopy and angle-resolved electroluminescence spectroscopy. The project will be implemented in strong collaboration with the group of Prof. Ludvig Edman The Organic Electronics and Photonics Group (, worldwide expert in LECs at the Department of Physics.


To qualify as a postdoctoral scholarship holder, the postdoctoral fellow is required to have completed a doctoral degree or a foreign degree deemed equivalent to a doctoral degree. This qualification requirements must be fulfilled no later than at the time of the decision of the scholarship recipient.

Priority should be given to candidates who completed their doctoral degree, according to what is stipulated in the paragraph above, no later than three years prior to the decision date for the scholarship recipient. If there are special reasons, candidates who completed their doctoral degree prior to that may also be eligible. Special reasons include absence due to illness, parental leave, appointments of trust in trade union organizations, military service, or similar circumstances, as well as clinical practice or other forms of appointment/assignment relevant to the subject area.

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