Surface morphology and current-voltage characteristics of monolayer Langmuir-Blodgett films of conjugated organic molecules

被引：7

作者：

Semaltianos, NG ^{[1
]}

机构：

[1] Univ London Queen Mary & Westfield Coll, Dept Phys, London E1 4NS, England

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 329卷 / 1-2期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/S0009-2614(00)00984-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The surface morphology of W-light polymerized monolayer Langmuir-Blodgett films of 10-12 pentacosadyinoic acid (12-8 diacetylene) deposited on flat gold substrates was imaged by atomic force microscopy. Current-voltage characteristics of the monolayer film was measured by using the tip of a scanning tunneling microscope at individual points on the film surface and compared to the ones measured on the bare gold substrate. The measured current-voltage characteristics are correlated and discussed with the expectation of the Au Fermi level of the substrate, Pt/Ir Fermi level of the tip and the higher occupied molecular orbital/lower unoccupied molecular orbital energy levels of the polydiacetylene molecule. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：76 / 83

页数：8

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