Themed collection Editor’s Choice collection: Organic Electronics

29 items
Editorial

Editor’s Choice: “Organic Electronics: What a Journey!”

Scientific Editor for Materials Horizons Professor Jean-Luc Brédas (The University of Arizona, USA), introduces this Editor’s Choice collection on organic electronics.

Graphical abstract: Editor’s Choice: “Organic Electronics: What a Journey!”
Focus

Engineering of flat bands and Dirac bands in two-dimensional covalent organic frameworks (COFs): relationships among molecular orbital symmetry, lattice symmetry, and electronic-structure characteristics

An effective framework for the band engineering in 2D covalent organic frameworks is revealed by describing the fundamental relationships among the electronic structures, the lattice symmetries, and the frontier molecular orbitals of building units.

Graphical abstract: Engineering of flat bands and Dirac bands in two-dimensional covalent organic frameworks (COFs): relationships among molecular orbital symmetry, lattice symmetry, and electronic-structure characteristics
From the themed collection: Focus article collection
Communication

High-performance asymmetric electrode structured light-stimulated synaptic transistor for artificial neural networks

In this work, an asymmetric electrode structure of the light-stimulated synaptic transistor (As-LSST) is present. The As-LSST has excellent electrical characteristics, photosensitivity, low power and multiple biosynaptic functions.

Graphical abstract: High-performance asymmetric electrode structured light-stimulated synaptic transistor for artificial neural networks
Open Access Communication

Stable organic electrochemical neurons based on p-type and n-type ladder polymers

Rigid ladder-type conjugated polymers enable the development of stable and high-performance organic electrochemical transistors (OECTs) and complementary OECT-based amplifiers for brain-inspired artificial neurons.

Graphical abstract: Stable organic electrochemical neurons based on p-type and n-type ladder polymers
From the themed collection: 2023 Horizons Outstanding Paper Award Winners
Communication

Spectroscopic analysis of vibrational coupling in multi-molecular excited states

Temperature dependent luminescence of multi-molecular excited states like excimers and charge-transfer states is described by a Frank–Condon model based on an inter-molecular vibrational mode and different potentials for the ground and excited state.

Graphical abstract: Spectroscopic analysis of vibrational coupling in multi-molecular excited states
Communication

Ultrahigh energy storage performance of all-organic dielectrics at high-temperature by tuning the density and location of traps

An improved composite dielectric with an excellent high-temperature energy storage performance has been obtained by modulating the trap parameters.

Graphical abstract: Ultrahigh energy storage performance of all-organic dielectrics at high-temperature by tuning the density and location of traps
Communication

A comprehensive picture of roughness evolution in organic crystalline growth: the role of molecular aspect ratio

The molecular aspect ratio of organic small molecules is shown to impact the roughness evolution during crystal growth through complementary experimental and computational studies.

Graphical abstract: A comprehensive picture of roughness evolution in organic crystalline growth: the role of molecular aspect ratio
Communication

Achieving circularly polarized luminescence and large piezoelectric response in hybrid rare-earth double perovskite by a chirality induction strategy

A pair of 3D hybrid rare-earth double perovskites with large piezoelectric responses and CPL was constructed by introducing chirality. This study provides a strategy to prepare high-performance molecule-based piezoelectric and CPL materials.

Graphical abstract: Achieving circularly polarized luminescence and large piezoelectric response in hybrid rare-earth double perovskite by a chirality induction strategy
Open Access Communication

Double-type-I charge-injection heterostructure for quantum-dot light-emitting diodes

Enforcing balanced electron–hole injection into the emitter layer of quantum-dot light-emitting diodes through a double-type-I heterostructure using polymer semiconductors maximizes the quantum efficiency over a wide current density range.

Graphical abstract: Double-type-I charge-injection heterostructure for quantum-dot light-emitting diodes
Communication

Heterojunction bilayers serving as a charge transporting interlayer reduce the dark current and enhance photomultiplication in organic shortwave infrared photodetectors

This work modifies the charge-transporting layer in organic photodiodes to a heterojunction bilayer. The bilayer design facilitates photomultiplication and suppresses the dark current to enhance detectivity and contrast in upconversion imagers.

Graphical abstract: Heterojunction bilayers serving as a charge transporting interlayer reduce the dark current and enhance photomultiplication in organic shortwave infrared photodetectors
Communication

Universal electrode for ambipolar charge injection in organic electronic devices

Ambipolar transistors, i.e. transistors with symmetrical n- and p-type performances, open new avenues for the design and integration of high-density, efficient and versatile circuits for advanced technologies.

Graphical abstract: Universal electrode for ambipolar charge injection in organic electronic devices
Open Access Communication

Structural insights into Lewis acid- and F4TCNQ-doped conjugated polymers by solid-state magnetic resonance spectroscopy

Polymer–dopant intermolecular interactions characterized by solid-state NMR and EPR spectroscopy techniques offer clues about the different doping mechanisms and efficiencies.

Graphical abstract: Structural insights into Lewis acid- and F4TCNQ-doped conjugated polymers by solid-state magnetic resonance spectroscopy
Open Access Communication

Backbone-driven host–dopant miscibility modulates molecular doping in NDI conjugated polymers

Molecular doping is the key to enabling organic electronic devices, however, the design strategies to maximize doping efficiency demands further clarity and comprehension.

Graphical abstract: Backbone-driven host–dopant miscibility modulates molecular doping in NDI conjugated polymers
Open Access Communication

Bipolarons rule the short-range terahertz conductivity in electrochemically doped P3HT

In situ terahertz spectroscopy on electrochemically doped P3HT reveals the impact of polarons and bipolarons on the short-range conductivity.

Graphical abstract: Bipolarons rule the short-range terahertz conductivity in electrochemically doped P3HT
Communication

Short and long-range electron transfer compete to determine free-charge yield in organic semiconductors

Marcus theory explains photoinduced electron transfer from donor molecules to a fullerene host when all microstates are included, and formation of free charge competes with charge-transfer states.

Graphical abstract: Short and long-range electron transfer compete to determine free-charge yield in organic semiconductors
Communication

Enantiopure 2-(2-ethylhexyl)dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophenes: synthesis, single-crystal structure and a surprising lack of influence of stereoisomerism on thin-film structure and electronic properties

Starting from a chiral resolution of 2-ethylhexanoic acid followed by conversions of functional groups without interfering with the enantiopurity, we have successfully introduced an enantiopure 2-ethylhexyl group on to dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) via a Negishi-coupling reaction to synthesize 2-(R)-(2-ethylhexyl)- and 2-(S)-(2-ethylhexyl)-DNTT (R- and S-EH-DNTT, respectively).

Graphical abstract: Enantiopure 2-(2-ethylhexyl)dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophenes: synthesis, single-crystal structure and a surprising lack of influence of stereoisomerism on thin-film structure and electronic properties
Communication

Design and synthesis of chromophores with enhanced electro-optic activities in both bulk and plasmonic–organic hybrid devices

By tuning donor strength, we produce an organic electro-optic chromophore with high hyperpolarizability, low absorption, and excellent electro-optic activity, which is demonstrated in a plasmonic–organic hybrid modulator with near record low VπL.

Graphical abstract: Design and synthesis of chromophores with enhanced electro-optic activities in both bulk and plasmonic–organic hybrid devices
Communication

Substituent-dependent absorption and fluorescence properties of perylene bisimide radical anions and dianions

Custom-built flow cells for absorption and fluorescence spectroelectrochemistry provide details on optical transitions, transition dipole moments and fluorescence quantum yields of five perylene bisimides as well as their radical anions and dianions.

Graphical abstract: Substituent-dependent absorption and fluorescence properties of perylene bisimide radical anions and dianions
Communication

Detecting triplet states in opto-electronic and photovoltaic materials and devices by transient optically detected magnetic resonance

We present a transient ODMR technique to detect and distinguish triplet states in opto-electronic and photovoltaic materials and devices.

Graphical abstract: Detecting triplet states in opto-electronic and photovoltaic materials and devices by transient optically detected magnetic resonance
Communication

Visible-blind ultraviolet narrowband photomultiplication-type organic photodetector with an ultrahigh external quantum efficiency of over 1 000 000%

The new concept of fabricating high-performance visible-blind narrowband UV photomultiplication-type organic photodetectors provides a necessary prerequisite for flexible wearable UV monitoring and other promising applications.

Graphical abstract: Visible-blind ultraviolet narrowband photomultiplication-type organic photodetector with an ultrahigh external quantum efficiency of over 1 000 000%
Communication

Tetrazine molecules as an efficient electronic diversion channel in 2D organic–inorganic perovskites

Taking advantage of an innovative design concept, we present the synthesis of two novel two-dimensional (2D) hybrid organic–inorganic halide perovskites incorporating for the first time 100% of a photoactive tetrazine derivative as the organic component.

Graphical abstract: Tetrazine molecules as an efficient electronic diversion channel in 2D organic–inorganic perovskites
Communication

Infrared spectroscopy depth profiling of organic thin films

FDD-IR spectra combined with soft plasma etching is introduced to study organic film property along film-depth. It provides insights into different kinds of organic films, all equipment and methodology are easily accessible in laboratories worldwide.

Graphical abstract: Infrared spectroscopy depth profiling of organic thin films
Communication

Novel butterfly-shaped organic semiconductor and single-walled carbon nanotube composites for high performance thermoelectric generators

Curved organic small molecule and single-walled carbon nanotube composites with enhanced interactions for thermoelectric materials.

Graphical abstract: Novel butterfly-shaped organic semiconductor and single-walled carbon nanotube composites for high performance thermoelectric generators
Communication

Anisotropic 2D excitons unveiled in organic–inorganic quantum wells

Hybrid layered metal chalcogenide crystalline polymer hosts strongly anisotropic two-dimensional excitons with large binding energies.

Graphical abstract: Anisotropic 2D excitons unveiled in organic–inorganic quantum wells
Communication

Acid dyeing for green solvent processing of solvent resistant semiconducting organic thin films

The alcohol and water-based processing of a perylene diimide (PDI) organic semiconductor into large area and solvent resistant films is reported.

Graphical abstract: Acid dyeing for green solvent processing of solvent resistant semiconducting organic thin films
Communication

Real-time monitoring of trap dynamics reveals the electronic states that limit charge transport in crystalline organic semiconductors

Access to the dynamics of trap annihilation/generation resulting from isomer rearrangement identifies the performance-limiting processes in organic thin-film transistors.

Graphical abstract: Real-time monitoring of trap dynamics reveals the electronic states that limit charge transport in crystalline organic semiconductors
Open Access Communication

Monitoring supported lipid bilayers with n-type organic electrochemical transistors

An n-type, accumulation mode, microscale organic electrochemical transistor monitors the activity of a pore-forming protein integrated into a lipid bilayer.

Graphical abstract: Monitoring supported lipid bilayers with n-type organic electrochemical transistors
Open Access Communication

Temperature dependence of the spectral line-width of charge-transfer state emission in organic solar cells; static vs. dynamic disorder

The origin of line-widths of electro-luminescent charge-transfer states in photovoltaic blends is evaluated and discussed in terms of vibrational theory.

Graphical abstract: Temperature dependence of the spectral line-width of charge-transfer state emission in organic solar cells; static vs. dynamic disorder
Communication

Soluble poly(4-fluorostyrene): a high-performance dielectric electret for organic transistors and memories

Poly(4-fluorostyrene) with strong charge storage capability is introduced as an electret in a field-effect transistor to improve device performance and memory stability.

Graphical abstract: Soluble poly(4-fluorostyrene): a high-performance dielectric electret for organic transistors and memories
29 items

About this collection

Materials Horizons Scientific Editor, Professor Jean-Luc Brédas (The University of Arizona, USA), has selected some outstanding recent manuscripts related to the topic of organic electronics for this Editor’s Choice collection. To celebrate the 50th anniversary since the first reports of TTF-TCNQ, this collection gathers some of the most recent and impactful articles published in Materials Horizons on the topic of organic electronics over the past couple of years. We hope that this collection highlights the remarkable diversity and impact of organic electronics research.

Congratulations to all featured authors!


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