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학술지 High-Fidelity Formation of a Molecular-Junction DeviceUsing a Thickness-Controlled Bilayer Architecture
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저자
방경숙, 장호종, 구자룡, 이탁희, R. C. Advincular, 이효영
발행일
200809
출처
Small, v.4 no.9, pp.1399-1405
ISSN
1613-6810
출판사
Wiley-Blackwell
DOI
https://dx.doi.org/10.1002/smll.200701232
협약과제
08SB1100, 기능성 분자메모리 소재 개발 및 소자구현 연구, 이효영
초록
The device yield of molecular junctions has become a major issue for the practical application of molecular electronics based on a crossbar system of a metal-molecule-metal (MMM) junction. As the thickness of self-assembled monolayers (SAMs) is typically 1-2 nm, it is difficult to avoid electrical shorts due to the penetration of top metal particles into the SAMs. A simple and effective strategy for the creation of a reliable molecular junction using a thickness-controlled bilayer with a bifunctional heterostructure is presented. In the MMM device, the Au adlayer on the molecular layer is spontaneously formed with deposition of the top Au metals and the sandwiched molecular layer maintains the quality of the SAMs. This method greatly reduces electrical shorts by preventing the diffusion of the top metal electrode and offsetting the surface roughness of the bottom metal electrode, resulting in a device yield of more than 90%.. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
키워드
Bilayers, Molecular electronics, Molecular junctions, Monolayers, Self-assembly
KSP 제안 키워드
Co. KGaA, Device yield, High-fidelity, Metal particle, Molecular electronics, Surface roughness, metal electrode, metal-molecule-metal, molecular junctions, molecular layer, practical application