A5024725234- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Organic Light-Emitting Diodes Research
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Perovskite Materials and Applications
- Molecular Junctions and Nanostructures
- Advanced Memory and Neural Computing
- Synthesis and Properties of Aromatic Compounds
- Advanced Sensor and Energy Harvesting Materials
- Thin-Film Transistor Technologies
- Luminescence and Fluorescent Materials
- Polydiacetylene-based materials and applications
- Photochromic and Fluorescence Chemistry
- ZnO doping and properties
- Semiconductor materials and devices
- Synthesis and properties of polymers
- Neuroscience and Neural Engineering
- Force Microscopy Techniques and Applications
- Supramolecular Self-Assembly in Materials
- Organic and Molecular Conductors Research
- Porphyrin and Phthalocyanine Chemistry
- Semiconductor materials and interfaces
- Liquid Crystal Research Advancements
- Surface Roughness and Optical Measurements
Max Planck Institute for Polymer Research
2016-2025
Lodz University of Technology
2013-2025
Faculty (United Kingdom)
2018-2020
University of Applied Sciences Mainz
2014-2020
Zero Emissions Resource Organisation
2018
Heidelberg University
2017
Heidelberg (Poland)
2017
Max Planck Society
2015
University of Łódź
2008-2014
Warsaw University of Technology
2011
Dopant-free HTM KR321 showed highly ordered characteristic face-on organization leading to increased vertical charge transport and PCE over 19% in PSC with improved stability.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTMobility Exceeding 10 cm2/(V·s) in Donor–Acceptor Polymer Transistors with Band-like Charge TransportYu Yamashita†, Felix Hinkel‡, Tomasz Marszalek‡, Wojciech Zajaczkowski‡, Pisula‡§, Martin Baumgarten‡, Hiroyuki Matsui*†, Klaus Müllen*‡, and Jun Takeya*†View Author Information† Department of Advanced Materials Science, The University Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8561, Chiba, Japan‡ Max Planck Institute for Research, Ackermannweg 10,...
Abstract Polymorphism of organic semiconducting materials exerts critical effects on their physical properties such as optical absorption, emission and electrical conductivity, provides an excellent platform for investigating structure–property relations. It is, however, challenging to efficiently tune the polymorphism conjugated polymers in aggregated, semi-crystalline phases due conformational freedom anisotropic nature. Here, two distinctly different polymorphs ( β 1 2 ) a low-bandgap...
Donor-acceptor polymers with an alternating array of donor and acceptor moieties have gained particular attention during recent years as active components organic electronics. By implementation suitable subunits within the conjugated backbone, these can be made either electron-deficient or -rich. Additionally, their band gap light absorption precisely tuned for improved light-harvesting in solar cells. On other hand, polymer design also modified to encode desired supramolecular self-assembly...
Easily accessible tetra‐5‐hexylthiophene‐, tetra‐5‐hexyl‐2,2′‐bisthiophene‐substituted zinc phthalocyanines (ZnPcs) and tetra‐ tert ‐butyl ZnPc are employed as hole‐transporting materials in mixed‐ion perovskite [HC(NH 2 ) ] 0.85 (CH 3 NH 0.15 Pb(I Br solar cells, reaching the highest power conversion efficiency (PCE) so far for phthalocyanines. Results confirm that photovoltaic performance is strongly influenced by both, individual optoelectronic properties of ZnPcs aggregation these...
Abstract The conductivity of poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS) can be strongly enhanced by treatment with high boiling solvents as dimethyl sulfoxide (DMSO). effect various DMSO solvent methods on the performance organic electrochemical transistors (OECTs) based PEDOT:PSS is studied. treatments include mixing before film deposition, exposing a deposited to saturated vapor, and dipping in bath. Compared dry PEDOT:PSS, operating OECT configuration causes...
Molecular acceptors are promising alternatives to fullerenes (e.g., PC61/71BM) in the fabrication of high-efficiency bulk-heterojunction (BHJ) solar cells. While solution-processed polymer–fullerene BHJ devices have recently met 10% efficiency threshold, molecular yet prove comparably efficient with polymer donors. At this point time, it is important forge a better understanding design parameters that directly impact small-molecule (SM) acceptor performance In report, we show...
Abstract Organic semiconductors encounter limitations in their practical applicability future electronics due to low environmental stability and poor charge carrier mobilities. Blending with isolation of thermoplastic polymers elastomers circumvents these restrictions even induces new material properties, opening the door novel flexible stretchable that hold great potential for improving people's life. This review discusses next generation applications solution processable organic...
Abstract Currently, morphology optimization methods for the fused‐ring nonfullerene acceptor‐based polymer solar cells (PSCs) empirically follow treatments originally developed in fullerene‐based systems, being unable to meet diverse molecular structures and strong crystallinity of acceptors. Herein, a new universal controlling method is by applying volatilizable anthracene as solid additive. The offers possibility restrict over aggregation acceptor process film formation. During kinetic...
2D tin halide perovskites are promising semiconductors for FETs owing to their fascinating electronic properties. The charge transport properties of systematically investigated using linear alkyl ammonium cations with different carbon chain lengths.
Solution prepared single crystal organic field-effect transistors (OFETs) combine low-cost with high performance due to structural ordering of molecules. However, in crystals polymorphism is a known phenomenon, which can have crucial influence on charge transport. Here, the solution-prepared OFETs based two different polymorphs dithiophene-tetrathiafulvalene, were investigated by confocal Raman spectroscopy and X-ray diffraction, are reported. OFET devices using configurations show that both...
The aggregation of conjugated polymers is found to have a significant influence on the surface organization deposited films. Difluorobenzothiadiazole-based show strong pre-aggregation in solution, but addition 1,2,4-trichlorobenzene efficiently reduces such aggregates, leading transition from edge- face-on orientation
A novel donor–acceptor polymer, PPhTQ, is synthesized by condensing a phenanthrene unit onto thiadiazoloquinoxaline moiety. This polymer shows broad absorption band from visible to near-infrared and very low optical bandgap of 0.80 eV. well-balanced ambipolar field-effect behavior observed for with mobilities 0.09 cm2 V–1 s–1 holes 0.06 electrons. two-dimensional charge carrier transport in the film determined low-temperature resistance measurements, an ordered molecular organization mainly...
The surface roughness of a dielectric is precisely tuned, allowing fine control solely over the interfacial microstructure in semicrystalline semiconductor polymer film without affecting morphology upper layers. found to have only minor impact on transport originating from bypassing defects by charge carriers. As service our authors and readers, this journal provides supporting information supplied authors. Such materials are peer reviewed may be re-organized for online delivery, but not...
Controlling crystal growth and reducing the number of grain boundaries are crucial to maximize charge carrier transport in organic–inorganic perovskite field-effect transistors (FETs).
Field-effect transistors based on poly(3-hexylthiophene) (P3HT) ultrathin films exhibit maximum charge carrier mobilities of up to 0.1 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>.
Abstract The impact of the chemical structure and molecular order on charge transport properties two donor–acceptor copolymers in their neutral doped states is investigated. Both polymers comprise 3,7‐bis((E)‐7‐fluoro‐1‐(2‐octyl‐dodecyl)‐2‐oxoindolin‐3‐ylidene)‐3,7‐dihydrobenzo[1,2‐ b :4,5‐ ′]difuran‐2,6‐dione (FBDOPV) as electron‐accepting unit, copolymerized with 9,9‐dioctyl‐fluorene (P(FBDOPV‐F)) or 3‐dodecyl‐2,2′‐bithiophene (P(FBDOPV‐2T‐C 12 )). These possess an amorphous...
Understanding and controlling the nucleation crystallization in solution-processed perovskite thin films are critical to achieving high in-plane charge carrier transport field-effect transistors (FETs). This work demonstrates a simple effective additive engineering strategy using pentanoic acid (PA). Here, PA is introduced both modulate process improve 2D 2-thiopheneethylammonium tin iodide ((TEA)2 SnI4 ) FETs. It revealed that carboxylic group of strongly coordinated spacer cation TEAI...
Oscillations in the chemical or physical properties of materials, composed an odd even number connected repeating methylene units, are a well-known phenomenon organic chemistry and materials science. So far, such behavior has not been reported for important class perovskite semiconductors. This work reports distinct odd–even oscillation molecular structure charge carrier transport phenylalkylammonium two-dimensional (2D) Sn-based perovskites which alkyl chains cations contain varying carbon...
A series of tetrapyrene-fused benzocoronenes was synthesized by a "bottom-up" approach, which offers facile access to extended polycyclic aromatic hydrocarbons with concave π-surfaces, cove regions and zig-zag edges.
Two novel conjugated polymers with high molecular weight, PBDTTQ-3 and PAPhTQ, were synthesized by tuning alkyl chains alternating the electron-donating ability of thiadiazoloquinoxaline (TQ) moiety. Both have excellent solubility in common organic solvents. UV–vis–NIR absorption cyclic voltammetry indicate a bandgap (0.76 eV) electron affinity level (−4.08 for PBDTTQ-3. dimensional wide-angle X-ray scattering shows that both are only poorly ordered bulk but possess close π-stacking distance...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTCombination of Two Diketopyrrolopyrrole Isomers in One Polymer for Ambipolar TransportXin Guo, Sreenivasa Reddy Puniredd, Bo He, Tomasz Marszalek, Martin Baumgarten, Wojciech Pisula, and Klaus Müllen*View Author Information Max Planck Institute Research, Ackermannweg 10, D-55128 Mainz, Germany*E-mail: [email protected]Cite this: Chem. Mater. 2014, 26, 12, 3595–3598Publication Date (Web):June 2014Publication History Received2 February...