Investigation of a model molecular-electronic rectifier with an evaporated Ti-metal top contact

被引:87
作者
Chang, SC [1 ]
Li, ZY [1 ]
Lau, CN [1 ]
Larade, B [1 ]
Williams, RS [1 ]
机构
[1] Hewlett Packard Labs, Palo Alto, CA 94304 USA
关键词
D O I
10.1063/1.1616989
中图分类号
O59 [应用物理学];
学科分类号
摘要
Molecular-electronic devices are usually fabricated by sandwiching organic monolayers between electrodes. Questions arise about whether the molecules react with a deposited metal. We investigated a self-assembled monolayer (SAM) of alkoxynaphthalene thiol (I) on Pt before and after Ti film deposition. The SAM on Pt was highly ordered. Ti deposition resulted in some reaction with the alkyl chains and disordering, but the napthelenes remained intact. Pinhole free films of the monolayers were characterized by current-voltage measurements, revealing that a rectification ratio as high as 5x10(5) was achieved. (C) 2003 American Institute of Physics.
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页码:3198 / 3200
页数:3
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