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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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Priimagi, Arri
Tampere University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Strategies to control humidity sensitivity of azobenzene isomerisation kinetics in polymer thin filmscitations
- 2022Multistage Reversible Tg Photomodulation and Hardening of Hydrazone-Containing Polymerscitations
- 2021Multistage Reversible Tg Photomodulation and Hardening of Hydrazone-Containing Polymerscitations
- 2020Fluorination of pyrene-based organic semiconductors enhances the performance of light emitting diodes and halide perovskite solar cellscitations
- 2020Fluorination of pyrene-based organic semiconductors enhances the performance of light emitting diodes and halide perovskite solar cellscitations
- 2019Low-dimensional formamidinium lead perovskite architectures via controllable solvent intercalationcitations
- 2019Eco-friendly and low-cost phenothiazine-based hole-transporting material for high performance perovskite solar cells
- 2018Programming Photoresponse in Liquid Crystal Polymer Actuators with Laser Projectorcitations
- 2018Thermal Isomerization of Hydroxyazobenzenes as a Platform for Vapor Sensingcitations
- 2017Self-Regulating Iris Based on Light-Actuated Liquid Crystal Elastomercitations
- 2017Crystallisation-enhanced bulk hole mobility in phenothiazine-based organic semiconductorscitations
- 2016Photoresponsive liquid-crystalline polymer films bilayered with an inverse opal structurecitations
- 2015From partial to complete optical erasure of azobenzene-polymer gratings effect of molecular weightcitations
- 2013Photoinduced surface patterning of azobenzene-containing supramolecular dendrons, dendrimers and dendronized polymerscitations
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article
Fluorination of pyrene-based organic semiconductors enhances the performance of light emitting diodes and halide perovskite solar cells
Abstract
<p>In this work, a fluorinated pyrene-based organic semiconductor (L-F) has been designed and synthesized starting from a low-cost pyrene core functionalized with triphenilamine substituents at 1,3,6,8 positions (L-H), obtained via Suzuki coupling reactions. Its performance when used as green emitter in organic light emitting diodes (OLEDs) or as dopant-free hole-transporting material (HTM) in halide perovskite solar cells (PSCs) is higher than that of the L-H counterpart, in spite of its lower bulk hole-mobility (7.0 × 10<sup>−6</sup> cm<sup>2</sup>/V) to L-H (1.9 × 10<sup>−4</sup> cm<sup>2</sup>/V). In fact, the OLED devices based on a L-F active layer showed excellent green emission (brightness and current efficiency were 1759.8 cd/m<sup>2</sup> and 3.7 cd/A, respectively) at a 4.5 V turn-on voltage. When the molecules were employed as a dopant-free HTM in PSCs, L-F led to a power conversion efficiency (PCE) and open circuit voltage (V<sub>oc</sub>) of 5.9% and 1.07 V, respectively, thus outperforming those of corresponding devices based on L-H (PCE = 5.0% and V<sub>oc</sub> = 0.87 V) under similar experimental conditions (AM 1.5G and 100 mW cm<sup>2</sup>). We attribute the enhancements of L-F-based optoelectronic devices (OLEDs and PSCs) to the observed better quality of the L-F films. The promising performance of L-F indicates that fluorination of small molecules can be an effective strategy to achieve low-cost and high-performing materials for energy harvesting and display-based organic electronic devices.</p>