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Charge-TRansfer states for high-performance Organic eLectronics

Project description

The race to enhance charge transfer is on

Much as a relay race depends not only on how fast each team member runs but also on how efficiently runners transfer the baton, charge transfer (CT) at interfaces between electron donors and electron acceptors is critical to the performance of thin-film organic electronics. A step change in device performance requires detailed knowledge of the underlying properties of intermolecular CT states. This will open the door to tailored tuning of properties through rational molecular design. The EU-funded ConTROL project is characterising donors and acceptors as well as investigating their interactions with the optoelectronic device’s optical cavity. Enhanced understanding will support improved performance of existing organic solar cells, photodetectors and light-emitting diodes as well as innovative applications of novel highly controlled intermolecular CT states.

Objective

Thin films comprising a blend of electron donating (D) and electron accepting (A) molecules are ubiquitous in organic electronic devices. At the D-A interfaces, intermolecular charge-transfer (CT) states form, in which an electron is transferred from D to A. Electrical doping (p- and n-type) involves ground-state CT from dopant to host and results in increased conductivities of the host organic semiconductor. Furthermore, the performances of organic solar cells, photodetectors and light emitting diodes depend crucially on D-A interfaces where the CT state is an excited state, mediating between photons and free charge carriers. New applications of intermolecular CT states, such as transparent conductors, artificial synapses, biosensors, organic persistent luminescent materials and low cost narrowband near-infrared sensors have emerged in the past years, and there is clearly potential for additional innovation. However, current progress is hampered by a lack of understanding of the fundamental properties of intermolecular CT states and their decay and dissociation mechanisms. ConTROL aims to fill this knowledge gap and link device performance to molecular parameters of D-A interfaces. Electro-optical properties will be tuned by molecular design and appropriate D-A selection, as well as by weak and strong interactions with the opto-electronic device’s optical cavity. The knowledge generated will not merely result in improved performance of existing organic electronic devices, but new avenues and novel exciting applications of intermolecular CT states will be demonstrated.

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Programme(s)

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Topic(s)

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Funding Scheme

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ERC-COG - Consolidator Grant

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Call for proposal

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(opens in new window) ERC-2019-COG

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Host institution

UNIVERSITEIT HASSELT
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 2 369 150,00
Address
MARTELARENLAAN 42
3500 Hasselt
Belgium

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Region
Vlaams Gewest Prov. Limburg (BE) Arr. Hasselt
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 2 369 150,00

Beneficiaries (1)

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