A5067152590- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Machine Learning in Materials Science
- Advanced Thermoelectric Materials and Devices
- Thin-Film Transistor Technologies
- Semiconductor materials and interfaces
- Thermal properties of materials
- Technology Assessment and Management
- Graphene research and applications
- Electron and X-Ray Spectroscopy Techniques
- Solid-state spectroscopy and crystallography
- Advanced Sensor and Energy Harvesting Materials
- Carbon Nanotubes in Composites
- Computational Drug Discovery Methods
- Semiconductor materials and devices
- Organic and Molecular Conductors Research
- Block Copolymer Self-Assembly
- Quantum Dots Synthesis And Properties
- Electrowetting and Microfluidic Technologies
- solar cell performance optimization
- Chalcogenide Semiconductor Thin Films
- Nanowire Synthesis and Applications
- Silicon and Solar Cell Technologies
- Advanced Cellulose Research Studies
Heidelberg University
2024-2025
Universidade da Coruña
2024-2025
Institut de Ciència de Materials de Barcelona
2016-2024
Linköping University
2022-2023
Instituto de Ciencia de Materiales de Sevilla
2018-2021
Universitat Autònoma de Barcelona
2020
Artifex University
2019
Raman and THz spectra of CH<sub>3</sub>NH<sub>3</sub>PbX<sub>3</sub> interpreted with a catalogue computed vibrations their influence on heat electrical transport.
Bacteria are used to grow in an aqueous medium a cellulose-carbon nanotube composite porous film with good thermoelectric properties, flexibility and recyclability.
Blade coating in combination with non-toxic solvents provides high photovoltaic efficiency perovskite thin films by spherulitic growth crystallization.
Non-fullerene acceptors (NFAs) are excellent light harvesters, yet the origin of their high optical extinction is not well understood. In this work, we investigate absorption strength NFAs by building a database time-dependent density functional theory (TDDFT) calculations ∼500 π-conjugated molecules. The first validated comparison with experimental measurements in solution and solid state using common fullerene non-fullerene acceptors. We find that molar coefficient (εd,max) shows...
Semiconducting single-walled carbon nanotubes (SWCNTs) are a promising thermoelectric material with high power factors after chemical p- or n-doping. Understanding the impact of dopant counterions on charge transport and properties nanotube networks is essential to further optimize doping methods develop better dopants. This work utilizes ion-exchange systematically vary size in thin films small large diameter, polymer-sorted semiconducting SWCNTs AuCl
Fast screening of performance and stability organic solar cells is made through the use thickness thermal gradients, as well different deposition temperatures solvents.
High-throughput experimental screening and machine-learning algorithms are implemented in a synergic workflow to predict the photocurrent phase space of organic photovoltaic blends. We identify accurate models employing only materials band gaps.
Abstract The thermal conductivity (κ) governs how heat propagates in a material, and thus is key parameter that constrains the lifetime of optoelectronic devices performance thermoelectrics (TEs). In organic electronics, understanding what determines κ has been elusive experimentally challenging. Here, by measuring 17 π‐conjugated materials over different spatial directions, it statistically shown microstructure unlocks two markedly transport regimes. long‐range ordered polymers follows...
Abstract Networks of semiconducting single‐walled carbon nanotubes (SWNTs) are a promising material for thermoelectric energy harvesting due to their mechanical flexibility, solution processability, high Seebeck coefficients and electrical conductivities after chemical p‐ or n‐doping. Here, we demonstrate that proton‐coupled electron transfer (PCET) with benzoquinone (BQ) as the oxidant lithium bis(trifluoromethylsulfonyl)imide (Li[TFSI]) electrolyte counterions is highly suitable method...
Abstract Relatively thick‐film organic photovoltaics (OPVs) are desirable to spark commercialization through mass‐printing methods. Thickness‐resilient donor:acceptor blends are, however, scarce and not fully understood. The interplay between electronic, optical, microstructural properties of the photoactive layer (PAL) generates a multi‐parametric space where rationalization is far from trivial. In this work, high‐throughput experimentation, simulations, machine learning (ML) methods...
Abstract Organic solar cells based on ternary active layers can lead to higher power conversion efficiencies than corresponding binaries, and improved stability. The parameter space for optimization of multicomponent systems is considerably more complex that due both, a larger number parameters (e.g., two relative compositions rather one) intricate morphology–property correlations. Most experimental reports date reasonably limit themselves relatively narrow subset the 1:1 donor/s:acceptor/s...
The performance of photovoltaic devices based on blends conjugated polymers with nonfullerene acceptors depends the phase behavior and microstructure binary, which in turn chemical structures molecular components blend composition. We investigate correlation between structure, composition, behavior, device a model system consisting semicrystalline poly-3-hexylthiophene (P3HT) as donor polymer three acceptors, two (O-IDTBR/EH-IDTBR) have planar core different side chains one (O-IDFBR) has...
Abstract One of the major bottlenecks in development organic photovoltaics is time needed to evaluate each material system. This ranges from weeks months if different variables such as blend composition, thickness, annealing, and additives are be explored. In this study, use lateral gradients proposed order photovoltaic potential a system up 50 times faster. A platform that combines blade coating using controllable velocity profiles (thickness gradients) with multichannel dispensers...
Optical modeling of the Raman-scattered light enables simultaneous quantification thickness (<italic>d</italic>) and volumetric composition (vol%) in multi-component thin films.
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...
Low‐bandgap nonfullerene acceptors (NFAs) offer a unique potential for photovoltaic (PV) applications, such as transparent PV and agrivoltaics. Evaluating each new system to achieve the optimum thickness, microstructure, device performance is, however, complex multiparametric challenge with large time resource requirements. Herein, of low‐bandgap donor NFA materials by combining high‐throughput screening statistical methods is evaluated. The use thickness gradients (20–600 nm) facilitates...
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...
Abstract Microfluidic technologies are highly adept at generating controllable compositional gradients in fluids, a feature that has accelerated the understanding of importance chemical biological processes. That said, development versatile methods to generate solid‐state been far more elusive. The ability produce such would provide access extensive libraries, thus enabling high‐throughput exploration parametric landscape functional solids and devices resource‐, time‐, cost‐efficient manner....
We present a method to dissolve carbon nanotubes that simultaneously allows prepare n-doped films. These films are composed of thinner bundles longer tubes when compared prepared using surfactants and sonication. Their negative Seebeck coefficient high electrical conductivity make them good candidates for thermoelectric applications. investigate their stability in air by aging at elevated temperatures, showing stabilities over 500 h, which is further improved the use crown ethers. Finally,...
Spatial confinement at the nanoscale is exploited to achieve specific polymorphs in organic semiconductor p-DTS(FBTTh 2 ) . A new polymorph exhibiting higher charge-carrier mobility compared previously reported crystal form found.
Abstract Non‐fullerene acceptors have recently revolutionized indoor organic photovoltaics (OPVs) with power conversion efficiencies exceeding 30% in laboratory scale. Nevertheless, transferring their superior performance to larger‐scale prototyping, i.e., air‐processing via roll‐to‐roll compatible techniques, still shows severe challenges. Herein, the industrial potential of PM6:IO4Cl blend, which is one most successful OPV photoactive layers (PALs), thoroughly investigated. The...
We report on a combinatorial optimization procedure applied to heterojunction small molecule organic solar cells made of evaporated copper phthalocyanine (CuPc) and 3,4,9,10-perylenetetracarboxylic bisbenzimidazole (PTCBI). Our strategy consists depositing both light harvesting compounds as orthogonally arranged wedge-shaped layers then determine the optimum thicknesses which yield highest photoconversion efficiency. The device performance is locally assessed by means light-beam induced...