A5103232144- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Thin-Film Transistor Technologies
- Perovskite Materials and Applications
- Molecular Junctions and Nanostructures
- Crystallization and Solubility Studies
- Organic and Molecular Conductors Research
- X-ray Diffraction in Crystallography
- Advanced Memory and Neural Computing
- Semiconductor materials and interfaces
- Advanced Thermoelectric Materials and Devices
- Analytical Chemistry and Sensors
- Organic Light-Emitting Diodes Research
- Acoustic Wave Resonator Technologies
- Chalcogenide Semiconductor Thin Films
- Mechanical and Optical Resonators
- Advanced Sensor and Energy Harvesting Materials
- Surface Chemistry and Catalysis
- Luminescence Properties of Advanced Materials
- Gas Sensing Nanomaterials and Sensors
- Electron and X-Ray Spectroscopy Techniques
- Nanowire Synthesis and Applications
- Crystallography and molecular interactions
- TiO2 Photocatalysis and Solar Cells
- Quantum Dots Synthesis And Properties
Universitat Autònoma de Barcelona
2017-2024
Institut de Ciència de Materials de Barcelona
2015-2024
University of Southern California
2024
Instituto de Ciencia de Materiales de Sevilla
2024
Linköping University
2019-2023
Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine
2015-2019
FC Barcelona
2016
Universitat Politècnica de Catalunya
2012-2015
Abstract The development of low‐cost printed organic electronics entails the processing active semiconductors (OSCs) through solution‐based techniques. However, preparation large‐area uniform and reproducible films based on OSC inks can be very challenging due to low viscosity their solutions, which causes dewetting problems, stability polymer or difficulty in achieving appropriate crystal order. To circumvent this, a promising route is use blends OSCs insulating binding polymers. This...
In electronics, the field‐effect transistor (FET) is a crucial cornerstone and successful integration of this semiconductor device into circuit applications requires stable ideal electrical characteristics over wide range temperatures environments. Solution processing, using printing or coating techniques, has been explored to manufacture organic transistors (OFET) on flexible carriers, enabling radically novel electronics applications. Ideal characteristics, in materials, are typically only...
During the last decades, small molecule organic semiconductors have been successfully used as active layer in field‐effect transistors (OFETs). Despite high mobility achieved so far with molecules, order to progress field it is crucial find techniques process them from solution. The device reproducibility one of principal weak points electronics for further commercialization. To achieve a device‐to‐device essential control morphology and polymorphism OFET application. In this work,...
In the last few years exciting advances have been achieved in developing printing techniques for organic semiconductors, and impressive mobility values reported resulting field‐effect transistors (OFETs). However, not all these are scalable some of them require additional crystallization steps. This study reports on fabrication OFETs employing blends four benchmark semiconductors with polystyrene demonstrates that applying same formulation experimental conditions them, highly reproducible...
Doping of organic semiconductors is a powerful tool to optimize the performance various (opto)electronic and bioelectronic devices. Despite recent advances, low thermal stability electronic properties doped polymers still represents significant obstacle implementing these materials into practical applications. Hence, development conducting with excellent long-term at elevated temperatures highly desirable. Here, we report on sequential doping ladder-type polymer...
Abstract Simple synthetic routes, high active layer thickness tolerance as well stable organic solar cells are relentlessly pursued key enabling traits for the upscaling of photovoltaics. Here, potential to address these issues by tuning donor polymer molecular weight is investigated. Specifically, focus on PTQ10, a with low complexity, number average weights 2.4, 6.2, 16.8, 52.9, and 54.4 kDa, in combination three different non‐fullerene acceptors, namely Y6, Y12, IDIC. Molecular weight,...
Solution-processed n-type organic field-effect transistors (OFETs) are essential elements for developing large-area, low-cost, and all logic/complementary circuits. Nonetheless, the development of air-stable semiconductors (OSCs) lags behind their p-type counterparts. The trapping electrons at semiconductor-dielectric interface leads to a lower performance operational stability. Herein, we report printed small-molecule OFETs based on blend with binder polymer, which enhances device stability...
This communication presents a novel electrolyte gated field-effect transistor based on blend of dibenzo-tetrathiafulvalene and polystyrene deposited through bar-assisted meniscus shearing. technique allows the fabrication high performing electronic devices suitable for (bio)sensing applications might capture industrial interest due to its scalability. The reported can operate in aqueous solution with comparable complexity real samples.
State-of-the-art p-type organic conjugated polymers are mostly thiophene-based semiconductors. Still, novel chemical design and a fresh perspective on different polymer backbones could pave the way for new high-performing materials and...
We investigated the impact of singly occupied molecular orbital (SOMO) energy on n-doping efficiency benzimidazole derivatives. By designing and synthesizing a series new air-stable benzimidazole-based dopants with different SOMO levels, we demonstrated that an increase dopant by only ∼0.3 eV enhances electrical conductivity benchmark electron-transporting naphthalenediimide-bithiophene polymer more than 1 order magnitude. combining electrical, X-ray diffraction, electron paramagnetic...
Organic field-effect transistors (OFETs) and phototransistors using blends of Ph-BTBT-10 with binding polymers are prepared. We show that tuning the nature polymer is a useful tool to optimise OFET performance photoresponsivity.
In the field of organic solar cells, semiconductors with Y6‐based chemical structure and their corresponding quinoxaline‐based assemblies are settled down as promising materials in OSCs. However, Y6 derivatives does not allow an expansion electron‐withdrawing central core, contrast to analogues. For this reason, herein, two different A–D–A′–D–A 2D π ‐extended cores endowed electroactive rylenimide moieties, named Y6‐1Napht Y6‐1Pery, designed synthesized . These enlarged fused‐ring electron...
Large Stokes shift downshifting organolanthanide complex, Eu(tta)3phen, is examined for inclusion in polymeric layers to replace the UV blocking layer dye sensitized solar cell (DSSC) technology. The increases stability but power conversion efficiency decreases as incident photons are not converted into photocurrent. Eu(tta)3phen doped film prepared and attached DSSC devices following optimized thickness concentration from a ray-trace numerical model specific DSSC. External quantum...
The desired attributes of organic photovoltaics (OPV) as a low cost and sustainable energy harvesting technology demand the use non-halogenated solvent processing for photoactive layer (PAL) materials, preferably synthetic complexity (SC) without compromising power conversion efficiency (PCE). Despite their record PCEs, most donor-acceptor conjugated copolymers in combination with non-fullerene acceptors are still far from upscaling due to high SC. Here we present SC ink formulation PAL...
Abstract Despite the recent encouraging advances in achieving high‐performance organic field effect transistors employing meniscus‐guided processing techniques compatible with roll‐to‐roll manufacturing, there is still a very limited knowledge about how all coating parameters influence thin film electrical characteristics. Here, polymorphism and morphology of films semiconductor dibenzo‐tetrathiafulvalene blended polystyrene deposited by bar‐assisted meniscus shearing (BAMS) are investigated...
Abstract The integration of organic photovoltaic (OPV) modules on greenhouses is an encouraging practice to offset the energy demands crop growth and provide extra functionality dedicated farmland. Nevertheless, such OPV devices must meet certain optical stability requirements turn net zero greenhouse systems a reality. Here donor:acceptor polymer blend optimized for its use in laminated while matching needs crops. Optical modeling performed figure‐of‐merit introduced benchmark trade‐off...
The interfacial energetics are known to play a crucial role in organic diodes, transistors, and sensors. Designing the metal-organic interface has been tool optimize performance of (opto)electronic devices, but this is not reported for thermoelectrics. In work, it demonstrated that electrical power thermoelectric generators (OTEGs) also strongly dependent on energetics. Without changing figure merit (ZT) polythiophene-based conducting polymers, generated an OTEG can vary by three orders...
In this work, the deposition of a persistent organic radical by thermal evaporation on Au, Pt, and graphene is performed. The impact parameters nature substrate molecular organization within deposited film are investigated. nonplanarity molecule role molecule–molecule molecule–substrate interactions discussed. UV photoelectron spectroscopy experiments demonstrate that character, hence its magnetic redox properties, preserved three surfaces. optimized films electrically characterized...
The mass implementation of renewable energies is limited by the absence efficient and affordable technology to store electrical energy. Thus, development new materials needed improve performance actual devices such as batteries or supercapacitors. Herein, facile consecutive chemically oxidative polymerization poly(1‐amino‐5‐chloroanthraquinone) (PACA) poly(3,4‐ethylenedioxythiophene (PEDOT) resulting in a water dispersible material PACA‐PEDOT shown. water‐based slurry made nanoparticles can...
Optimization of a new system for organic solar cells is multiparametric analysis problem that requires substantial efforts in terms time and resources. The strong microstructure-dependent performance polymer:polymer makes them particularly difficult to optimize, or translate previous knowledge from spin coating into more scalable techniques. In this work, the photovoltaic blade-coated devices was studied based on promising PBDB-T PF5-Y5 as donor acceptor, respectively. Using recently...
The electronic and structural properties of two tetrathiafulvalene derivatives bearing aromatic benzene rings are reported. Thin film transistors these materials show p-type characteristics with comparable mobility values. It is found that the rigidification molecule beneficial for reducing reorganisation energy but also has an unfavorable impact on structure dimensionality.