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Fabrication of Multilayr Heterostructure Devices of Conducting Polymers using Molecular Self-Assembly Prtocess and Their Functionality

利用分子自组装工艺制备导电聚合物多层异质结构器件及其功能

基本信息

批准号：
08650389
负责人：
ONODA Mitsuyoshi
金额：
$ 1.6万
依托单位：
Himeji Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

Conducting polymers are generally becoming more important as semiconducting materials in new applications. Recent progress has been made in the fabrication of electronic devices based on metal-semiconductor Schottky junctions, where conducting polymers are used as active semiconducting materials. We had investigated on the fabrication of molecular self-assembled multilayr heterostructure devices of conducting polymers and their fanctionality. A novel thin film processing technique has been developed for the fabrication of ultrathin films of conducting polymers with molecular-level control over thickness and multilayr architecture. This new self-assembly process opens up vast possibilities in applications which require large area, ultrathin films of conducting polymers and more importantly in applications that can take advantage of the unique interactions achievable in the complex, supermolecular architectures of miltilayr films. Optical properties and phtoconduction of multilayred heterostructure devices using various conducting polymers have been studied Remarkable quenching of photoluminescence and enhanced photoconduction are found in the multilayred heterostructure. These phenomena are explained in terms of efficient photoinduced charge separation at the heterointerfaces between the negatively and the positively charged conducting polymers which are thought to act as a photo-donor and a photo-acceptor, respectively. Polypyrrole (PPy) films on the surface of sulfonated polyethylene (SPE) were grew using molecular self-assembly process and the properties of PPy/SPE composite films have been investigated.

导电聚合物作为半导体材料在新的应用中越来越重要。最近，基于金属半导体肖特基结的电子器件的制造取得了进展，其中导电聚合物被用作活性半导体材料。研究了导电聚合物分子自组装多层异质结构器件的制备及其功能。本文提出了一种新的薄膜加工技术，用于制备具有分子水平厚度控制和多层结构的导电聚合物超薄膜。这种新的自组装工艺为需要大面积超薄导电聚合物薄膜的应用开辟了广阔的可能性，更重要的是，它可以利用在复杂的超分子结构的军事层薄膜中实现的独特相互作用。研究了采用不同导电聚合物制备的多层异质结构器件的光学性质和光传导特性。在多层异质结构中发现了明显的光致猝灭和光传导增强现象。这些现象被解释为在带负电荷和带正电荷的导电聚合物之间的异质界面上有效的光诱导电荷分离，它们分别被认为是光供体和光受体。采用分子自组装方法在磺化聚乙烯（SPE）表面生长聚吡咯（PPy）薄膜，并研究了PPy/SPE复合薄膜的性能。