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Influence of the Chemical Structure of Perylene Derivatives on the Performance of Honey-Gated Organic Field-Effect Transistors (HGOFETs) and Their Application in UV Light Detection.
ACS Appl Electron Mater
December 2024
James Watt School of Engineering, University of Glasgow, G12 8QQ Glasgow, Scotland, U.K.
Electronics based on natural or degradable materials are a key requirement for next-generation devices, where sustainability, biodegradability, and resource efficiency are essential. In this context, optimizing the molecular chemical structure of organic semiconductor compounds (OSCs) used as active layers is crucial for enhancing the efficiency of these devices, making them competitive with conventional electronics. In this work, honey-gated organic field-effect transistors (HGOFETs) were fabricated using four different perylene derivative films as OSCs, and the impact of the chemical structure of these perylene derivatives on the performance of HGOFETs was investigated.
View Article and Find Full Text PDFA Review of Bandgap Engineering and Prediction in 2D Material Heterostructures: A DFT Perspective.
Int J Mol Sci
December 2024
Department of Physics, Gachon University, Seongnum-si 13120, Gyeonggi-do, Republic of Korea.
The advent of two-dimensional (2D) materials and their capacity to form van der Waals (vdW) heterostructures has revolutionized numerous scientific fields, including electronics, optoelectronics, and energy storage. This paper presents a comprehensive investigation of bandgap engineering and band structure prediction in 2D vdW heterostructures utilizing density functional theory (DFT). By combining various 2D materials, such as graphene, hexagonal boron nitride (h-BN), transition metal dichalcogenides, and blue phosphorus, these heterostructures exhibit tailored properties that surpass those of individual components.
View Article and Find Full Text PDFElectrically induced insulator-to-metal transition in InP-based ion-gated transistor.
Sci Rep
December 2024
International Center for Synchrotron Radiation Innovation Smart (SRIS), Tohoku University, Miyagi, 980-8572, Japan.
With the growing awareness of energy savings and consumption for a sustainable ecosystem, the concept of iontronics, that is, controlling electronic devices with ions, has become critically important. Composite devices made of ions and solid materials have been investigated for diverse applications, ranging from energy storage to power generation, memory, biomimetics, and neuromorphic devices. In these studies, three terminal transistor configurations with liquid electrolytes have often been utilized because of their simple device structures and relatively easy fabrication processes.
View Article and Find Full Text PDFRevealing the Effect of Crystalline Self-Assembled Monolayer in Biomimetic Photosynapse with Ultraviolet Light Protection Capability.
ACS Appl Mater Interfaces
December 2024
Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
The research on photonic synapses holds immense promise for various applications, such as robotics and artificial intelligence. Pursuing lightweight, miniaturized, and low-energy consumption designs is crucial for enhancing efficiency and adaptability in evolving technological environments. To achieve this goal, this work designs a series of conjugated self-assembled molecules with photoactive pyrene, benzo-naphthol-thiophene (BNT), perylene, and benzothieno-benzothiophene cores to develop ultrathin (<3 nm) charge-trapping self-assembled monolayers (SAMs).
View Article and Find Full Text PDFPhotoelectric tunable-step terahertz detectors: a study on optimal antenna parameters, speed, and temperature performance.
Nanophotonics
April 2024
Cavendish Laboratory, University of Cambridge, CB3 0HE Cambridge, UK.
Field effect transistors have shown promising performance as terahertz (THz) detectors over the past few decades. Recently, a quantum phenomenon, the in-plane photoelectric effect, was discovered as a novel detection mechanism in gated two-dimensional electron gases (2DEGs), and devices based on this effect, photoelectric tunable-step (PETS) THz detectors, have been proposed as sensitive THz detectors. Here, we demonstrate a PETS THz detector based on GaAs/AlGaAs heterojunction using a dipole antenna.
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