Scanning probe microscopies for molecular photodiodes

被引：23

作者：

Fujihira, M ^{[1
]}

Sakomura, M ^{[1
]}

Aoki, D ^{[1
]}

Koike, A ^{[1
]}

机构：

[1] YOKOHAMA NATL UNIV,DEPT PHYS CHEM,HOKOGAYA KU,YOKOHAMA,KANAGAWA 240,JAPAN

来源：

THIN SOLID FILMS | 1996年 / 273卷 / 1-2期

关键词：

atomic force microscopy; nanostructures; Langmuir-Blodgett films; photovoltage;

D O I：

10.1016/0040-6090(95)08025-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photo-electric conversion molecular devices, i.e. molecular photodiodes based upon the charge separation mechanism of the primary process of natural photosynthesis, have been studied in our laboratory. Amphiphilic AS-D triad molecules can be oriented unidirectionally in monolayers at the air-water interface, The resulting oriented monolayer assemblies are fabricated into thin films on electrode surfaces by the Langmuir-Blodgett (LB) technique. The A-S-D triads for charge separation together with light harvesting antenna molecules can be assembled into sub-micron island domains by making use of phase separation of mixed monolayers of hydrocarbon (HC) and fluorocarbon (FC) amphiphiles. The structure and properties of the domains of HC-FC mixed monolayers were studied by various scanning probe microscopies (SPMs) such as atomic force microscopy, friction force microscopy, scanning surface potential microscopy (SSPM), and scanning near-field optical/atomic force microscopy. Some SPMs can be used not only to characterize the LB films, but also to drive the molecular devices. The photo-induced charge separation in unidirectionally oriented triad molecules embedded in alternate LB films was observed by SSPM.

引用

页码：168 / 176

页数：9

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