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Complex film on the electrical storage device and the single film on gold nanostructures

Author: HuoZhongZuo
Tutor: XuWei
School: Fudan University
Course: Physical Electronics
Keywords: Complex film Write Once Read Many Threshold voltage Nanoporous gold film Interface diffusion Surface Enhanced Raman
CLC: TB383.2
Type: Master's thesis
Year: 2009
Downloads: 20
Quote: 0
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Abstract


This thesis consists of the following two parts. Films based on complex electrical storage device With the continuous development of storage technology advances, many new electrical storage materials and related preparation process is finding out . In this paper , we use the solid - liquid interface prepared by reaction of electrical storage device dielectric layer film . Use DMMM-Na / H 2 O solution or KSCN / CH 3 CH 2 OH solution and Cu reaction to obtain DMMM-Cu or CuSCN media -layer film , the film produced on both sides of the vertical cross wiring of Cu, Al metal electrode , and the resulting device has a write once read-many electrical storage characteristics. Through screening of process parameters , can be prepared by the Al / DMMM-Cu / Cu device has a yield of over 90% , which is high, a low-impedance state than of 10 7 . The Cu / CuSCN / Al devices In addition to these advantages, it also has a more consistent threshold voltage , when in the solid - liquid interface reaction copper film thickness of 25nm , the 90% of the device threshold voltage distribution at 3.75 ± 0.25V range inside . Single nanostructured gold film with nano-materials for preparing the deepening development of science , nano-structured gold film with its excellent chemical stability as well as molecular probes , energy storage , catalysis good application prospects , by people increasingly the more and more attention. In this paper, we propose a diffusion process using the interface prepared gold film nanostructure method , vacuum thermal evaporation method using gold and copper were deposited bilayers , after thermal annealing , and then removed by chemical etching copper group minutes to prepare a single nanopore gold film . With a scanning electron microscope surface morphology , and compares the annealing temperature and annealing time on the nano- structure. The study also found that when such a nanostructured gold films adsorbed monolayer of methyl thiophenol or 4,4 ' - bipyridine molecules , we could observe significant SERS effect . Such film-forming method is simple , low cost, large area can be prepared nanostructured gold film , this nano- structure in the molecular detection of gold film has application.

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CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
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