PolDev · Exploiting strong light-matter coupling for organic polariton-based photonic devices
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2021-05-01 → 2023-04-30
- EU contribution
- €174,806
- Participants
- 1
- Scheme
- MSCA-IF
Lines connect the coordinator with its partners.
Results in brief
Exploiting strong light-matter coupling for organic polariton-based photonic devices
All optical thin-film devices need to consider interference either as their core working principle or to maximize their operational efficiency. This interference inevitably leads to an angular dependence of spectral characteristics, often limiting the usefulness of such devices over a broad angle range. Within the PolDev project, we have analysed and tested a way to break this fundamental principle by utilizing and tuning exciton-polariton modes arising in strongly and ultra-strongly coupled microcavities. We have demonstrated the possibility to create spectrally narrow bandpass filters throughout the visible range with an angle-dependent spectral shift that is less than their half linewidth (below 15 nm), as well as the continuation of this principle towards high-performing multilayer stack with tunable, angle-independent response. Futhermore, the concept of dispersion engineering with strong coupling was successfully applied to highly efficient and narrowband organic light emitting diodes for display applications, as well as a monolithically combined filter-organic photodiode with an angle-independent narrowband spectral response. The angle-stable nature of the strong-coupling induced resonances also allowed for the realization of ultrathin, flexible and narrowband optoelectronic devices.We expect that strong coupling will enable a multitude of exciting new applications and high quality optical coatings for micro-optics, sensing, and biophotonics.
Data: CORDIS, © European Union
Project objective
The coherent coupling of photons and material resonances, known as strong light-matter coupling, has recently emerged as a concept to realise a variety of novel devices. By hybridising light in a micro- or nano-scale cavity with a material resonance, often an exciton to create exciton-polaritons, properties of both light and matter can be manipulated. While this has shown great promise in systems that exploit a change in energy levels of a material, such as in polariton chemistry, the resulting change of light dispersion has been largely neglected for applications. Within the project PolDev, I aim to realise organic polaritonic devices that make full use of the exciton-like dispersion in ultra-strongly coupled microcavities with suitable detuning. In doing so, I will realise interference-based transmission filters with ultra-low angular dispersion that will enable a new way of designing optical systems. I will further exploit this concept to design high-Q microcavity polariton light emitting diodes for display applications with unprecedented colour purity and to showcase new pathways for electrically pumped polariton lasing. The resulting devices will further be ported onto mechanically flexible platforms, paving the way for novel polaritonic applications.
Original text from CORDIS.
Participants
- UNIVERSITAT ZU KOLN · KolnCoordinatorGermany
Links
Data: CORDIS, © European Union