Long-range polymer ordering by directional coating to remarkably enhance the charge carrier mobility in PCDTPT-based organic field-effect transistors

Royal Society Open Science, Год журнала: 2024, Номер 11(5)

Опубликована: Май 1, 2024

With the wide potential of organic field-effect transistors in all modern electronic circuitries, researchers are grappling with challenge poor charge transport and hence lower mobility polymers. Low-charge carrier is mainly due to disorder molecular packing semiconductors along other factors, such as impurities, defects interactions between molecules. The current research work has been conducted align chains poly[4-(4,4-dihexadecyl-4H-cyclopenta[1,2-‌‌‌b:5,4-‌b′]‌dithiophen-2-yl)-alt-[1,2,5]thiadiazolo-[3,4-c]pyridine] (PCDTPT) using directional coating techniques dip brush on nano-grooved substrates. Long-range order polymer was clearly observed direction nanogrooves optical atomic force microscope (AFM) images while transmission spectra confirmed decreased pi–pi stacking for films deposited by this technique. By comparing performance brush-coated devices techniques, we found a remarkable enhancement 90 times that conventional spin-coated device 24 compared dip-coated case when alignment parallel channel. All fabrication characterizations were performed ambient environment. This study demonstrates approach polymers long short ranges providing route high-performing conditions.

Язык: Английский

Data-Quality-Navigated Machine Learning Strategy with Chemical Intuition to Improve Generalization

Journal of Chemical Theory and Computation, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 26, 2024

Generalizing real-world data has been one of the most difficult challenges for application machine learning (ML) in practice. Most ML works focused on improvements algorithms and feature representations. However, quality, as foundation ML, largely overlooked, also leading to absence evaluation processing methods fields. Motivated by challenge need, we selected an important but reorganization energy (RE) prediction task a test platform, which is parameter charge mobility organic semiconductors (OSCs), propose data-quality-navigated strategy with chemical intuition. We developed diversity based structure characteristics OSC molecules, reliability method accuracy, filtering uncertainty

Язык: Английский

Design, Synthesis, and Optoelectronic Properties of Benzothiadiazole-fused Sulfur and Nitrogen-containing Polycyclic Heteroaromatics

Journal of Materials Chemistry C, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

New benzothiadiazole-fused donor–acceptor structured heteroaromatics were designed and synthesized. The BzPTT-C4C8-based OFETs exhibit the highest hole mobility (up to 0.24 cm 2 V −1 s ) best photo-detection characteristics.

Язык: Английский