Themed collection In memory of Professor Gilles Horowitz

Guest Editors Natalie Stingelin, Thomas Anthopoulos, Hyeok Kim, Denis Tondelier, Luisa Torsi and Christine Vidot-Ackermann introduce this Journal of Materials Chemistry C collection in memory of Professor Gilles Horowitz.

This review article provides a critical overview of the diverse technological streams of interface engineering formed in the field of OTFTs.

Schematics of OECT with oxygen sensitive polymer (left) and air-stable polymer (right), showing electrochemical reaction with oxygen and cells cytotoxicity.

The first electrolyte-gated organic transistor biosensor for the detection of a transcription factor (NF-Y) in buffer and cell lysate.

Optically programmable organic field-effect transistors, developed using vacuum-deposited metal nanoparticles, enhance photocarrier generation and act as charge trapping centers, modulating charge retention.

A group of industrial vat orange dyes i.e. vat orange 1, vat orange 3 and vat orange 9 are investigated for their suitability as semiconductors in organic field effect transistors.

Spatial confinement at the nanoscale is exploited to achieve specific polymorphs in the organic semiconductor p-DTS(FBTTh₂)₂. A new polymorph exhibiting higher charge-carrier mobility compared to previously reported crystal form is found.

Ion-gated transistors using films of Li₄Ti₅O₁₂ and TiO₂ battery electrode materials interfaced with the ionic liquid [EMIM][TFSI] and the salt LiTFSI to study the doping mechanism during lithiation/delithiation considering possible structural changes.

Kelvin probe force microscopy allows to detect single binding events on biofunctionalized surfaces and works as an OFF/ON detector. Few binding events cause surface potential shifts over areas hosting >10⁷ capturing sites.

Our quantum chemical calculations of C₆₀–2S₈ and C₇₀–2S₈ indicate that charge transport, optical, and vibrational properties are dominated by fullerenes and these co-crystals are potential candidates for thermal long-wave IR imaging applications.

The effect of excited-state intramolecular proton-transfer (ESIPT) laser material rigidity on photophysical properties and amplified spontaneous emission (ASE) thresholds (E^ASE_th) is studied.

A multifunctional vertical organic phototransistor for smart optoelectronic applications has been demonstrated by precisely engineering the current path.

Incorporation of a benzothiadiazole moiety into a thiophene and naphthalene diimide-based copolymer improves electron mobility, conductivity and stability in the doped state.

The position of the alkyl chains was carefully adjusted to improve the photovoltaic characteristics of D–A-type quinoxaline-based polymers.

We present a drain current model for coplanar OFETs considering temperature dependent power-law mobility and contact resistance. This model enables analyzing the electrical characteristics of an OFET based on the spatially random Gaussian disorder model.

Chlorinated solvents are commonly used to process organic semiconductor devices but have several negative environmental impacts.

Ambipolar FETs were designed and fabricated based on the Ph-BTBT-10/PMMA/ZnO structure by a solution process.

An electrolyte-gated organic field-effect transistor that uses a magnetic carbon gate electrode to collect magnetic nanoparticles properly modified with a bio-receptor is reported as a novel platform to develop sensitive bio-sensors.

Self-assembled monolayer-treated source–drain electrodes enabled the development of high-performance ambipolar organic thin-film transistors using a donor–acceptor-type polymer, PNDI-TVT, and a complementary-like inverter on a single substrate.

Complementary inverters using IGZO n-channel and DNTT p-channel source-gated transistors are demonstrated for the first time. They exhibit gain of 368 V V⁻¹, 94% noise margin and matching on-current for relatively similar widths.

PDIF-CN₂ is zone-cast from different solvents to create different polymorphs. The structure of the new thin film polymorph is identified.

For wavelength-selective photodetection or color discrimination, organic photodetectors (OPDs) can provide significant advantages as solution processability, chemical versatility and functionality.

Broad-band impedance spectroscopy and equivalent-circuit modeling reveal the emergence of frequency-triggered internal circuit transitions in high-performance organic light-emitting diodes.

The fabrication of high-purity semiconducting single-walled carbon nanotubes (sc-SWNTs) often utilizes conjugated polymers to isolate the semiconducting from the metallic species.

TIPS-PPP, a novel TIPS-PEN derivative, features a vertically extended pentacene core for increased π–π overlap, enabling exploration of structure–morphology–property connections and exhibiting enhanced stability/electronic performance.