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[IEEE 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Paris, France (2018.7.8-2018.7.13)] 2018 Conference on Precision Electromagnetic Measurements (CPEM 2018) - Nanodot-Molecule Junctions: Assessing Intermolecular Interactions and Electron Transport at Microwave Frequencies
摘要： Here, we present the properties of molecular junctions fabricated on a large array of sub-10 nm single crystal Au nanodot electrodes, each junction being made of less than one hundred molecules. Thanks to this approach, we discuss some pending issues in molecular electronic : (i) the determination of inter-molecular interactions from the conductance histograms of molecular junctions, (ii) the demonstration of molecular electronic devices for high-frequency operation with a molecular diode working in the microwave regime up to 18 GHz.
关键词： Molecular electronics,interaction energy,scanning microwave microscope,microwave,electron transport,conducting-AFM
更新于2025-09-10 09:29:36
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Improving the rectifying performance of the pyrene-benzene system by optimizing its hydrocarbon bridge: A first-principles investigation
摘要： We report a computational study on enhancing the rectification ratio (RR) of the pyrene-benzene junction by modifying the structure of its acyclic aliphatic hydrocarbon bridge. The RR values for a series of pyrene-benzene systems with different types of bridges are determined. Notably, the maximum RR of the pyrene-(CH)3-(CH2)3-(CH)3-benzene system is 93.8, and the same hydrocarbon bridge increases the RR of the organic photovoltaic materials pyrene-DMA (N,N-dimethylaniline) and pyrene-DCNB (p-dicyanobenzene) by 10 times and limits reverse current during photo-induced electron transfer. These findings are particularly important for the design of molecular devices where both a high RR and conductivity are desirable. Moreover, they provide new insight into phenomena that indirectly affects the photo-electric conversion efficiency viz. enhancing the RR of the materials.
关键词： molecular electronics,hydrocarbon bridge,photovoltaic materials,pyrene-benzene system,rectification ratio
更新于2025-09-04 15:30:14