Nanomolecular electronic devices based on AuNP molecule nanoelectrodes using molecular place-exchange process
| Autor: | Omer Sher, Andreas Orthaber, Andreas Wallner, Aqib Hayat, Henrik Ottosson, Klaus Leifer, S. Hassan M. Jafri |
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| Rok vydání: | 2020 |
| Předmět: |
Fabrication
Materials science Orders of magnitude (temperature) Bioengineering Nanotechnology 02 engineering and technology Conjugated system 010402 general chemistry 01 natural sciences symbols.namesake Molecule General Materials Science Electronics Electrical and Electronic Engineering Alkyl chemistry.chemical_classification Mechanical Engineering Molecular electronics General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Mechanics of Materials symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Nanotechnology. 31:225207 |
| ISSN: | 1361-6528 0957-4484 |
| Popis: | The implementation of electronics applications based on molecular electronics devices is hampered by the difficulty of placing a single or a few molecules with application-specific electronic properties in between metallic nanocontacts. Here, we present a novel method to fabricate 20 nm sized nanomolecular electronic devices (nanoMoED) using a molecular place-exchange process of nonconductive short alkyl thiolates with various short chain conductive oligomers. After the successful place-exchange with short-chain conjugated oligomers in the nanoMoED devices, a change in device resistance of up to four orders of magnitude for 4,4'-biphenyldithiol (BPDT), and up to three orders of magnitude for oligo phenylene-ethynylene (OPE), were observed. The place-exchange process in nanoMoEDs are verified by measuring changes in device resistance during repetitive place-exchange processes between conductive and nonconductive molecules and surface-enhanced Raman spectroscopy. This opens vast possibilities for the fabrication and application of nanoMoED devices with a large variety of molecules. |
| Databáze: | OpenAIRE |
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