| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Costa, Rubén D.
Technical University of Munich
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Blue‐Emitting Boron‐ and Nitrogen‐Doped Carbon Dots for White Light‐Emitting Electrochemical Cellscitations
- 2023Design Rule Hidden from The Eye in S/N‐Bridged Ancillary Ligands for Copper(I) Complexes Applied to Light‐Emitting Electrochemical Cellscitations
- 2023Cunning defects: Emission control by structural point defects on Cu(i)I double chain coordination polymerscitations
- 2023Dendri‐LEC Family: Establishing the Bright Future for Dendrimer Emitters in Traditional and Graphene‐Based Light‐Emitting Electrochemical Cellscitations
- 2022Supramolecular Chalcogen-Bonded Semiconducting Nanoribbons at Work in Lighting Devicescitations
- 2020Cunning defects: emission control by structural point defects on Cu(i)I double chain coordination polymerscitations
- 2020Meeting High Stability and Efficiency in Hybrid Light‐Emitting Diodes Based on SiO2/ZrO2 Coated CsPbBr3 Perovskite Nanocrystalscitations
- 2012Efficient blue emitting organic light emitting diodes based on fluorescent solution processable cyclic phosphazenescitations
Places of action
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article
Dendri‐LEC Family: Establishing the Bright Future for Dendrimer Emitters in Traditional and Graphene‐Based Light‐Emitting Electrochemical Cells
Abstract
<jats:title>Abstract</jats:title><jats:p>A rational implementation and optimization of thermally activated delayed fluorescent (TADF) dendrimer emitters in light‐emitting electrochemical cells (LECs) sets in the Dendri‐LEC family. They feature outstanding stabilities (90/1050 h for green/yellow devices) that are comparable to the best green/yellow Ir(III)‐complexes (450/500 h) and conjugated polymers (33/5500 h), while offering benefits of low‐cost synthesis and easy upscaling. In particular, a fundamental molecular design that capitalizes on exchanging peripheral substituents (<jats:italic>tert</jats:italic>‐butyl vs methoxy) to tune photophysical, electrochemical, morphological, and ion conductivity features in thin films is rationalized by temperature‐dependent steady‐state and time‐resolved emission spectroscopy, cyclic voltammetry, atomic force microscopy, and electrochemical impedance spectroscopy techniques. Herein, a TADF mechanism associated to a reduced photoluminescence quantum yield, but an enhanced electrochemical stability and ion conductivity enables to clarify the reduced device efficiency and brightness (4.0 lm W<jats:sup>−1</jats:sup>@110 cd m<jats:sup>−2</jats:sup> vs 3.2 lm W<jats:sup>−1</jats:sup>@55 cd m<jats:sup>−2</jats:sup>) and increased stability (90 vs 1050 h) upon using methoxy groups. What is more, this substitution enables an excellent compatibility with biogenic electrolytes keeping device performances (1.9 lm W<jats:sup>−1</jats:sup>@35 cd m<jats:sup>−2</jats:sup> and 1300 h), while graphene‐devices achieve on par figures to traditional indium–tin oxide‐devices. Overall, this work establishes the bright future of dendrimer emitters toward highly stable and truly sustainable lighting sources.</jats:p>