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A modular materials design using integrated nanotube and nanowire assemblies

使用集成纳米管和纳米线组件的模块化材料设计

基本信息

批准号：
75138947
负责人：
Professor Dr. Michael Wark
金额：
--
依托单位：
Professur für Biogene Polymere
依托单位国家：
德国
项目类别：
Priority Programmes
财政年份：
2008
资助国家：
德国
起止时间：
2007-12-31 至 2010-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/75138947?language=en
关键词：
modular materials design using integrated

项目摘要

Based on our experiences on the formation of oxide nanotubes by coating cellulose or metal salt nanofibre templates, the scientific aims of this new project are the development of a versatile modular approach for the design of hierarchical organised materials based on an ordered template of polysaccharide whiskers. Inorganic nanotube formation on the polysaccharide whiskers will include metallisation, sol-gel or electrochemical deposition. A novel design concept of solar cells with an entirely accessible 3D- porous nanotube based architecture embedded in a semiconductor material creating charge carriers by the photoeffect is proposed to demonstrate the versatility of our modular structures. In the newly designed dye-sensitized solar cells the incorporated metal nanowires formed by metallisation of the templating cellulose whiskers will lead to a fast and efficient electron transport to the back electrode. The proposed research programme involves three major scientific parts: Formation of high density networks of ordered arrays of surface bound cellulose whiskers as a central issue; formation of inorganic nanotubes or bulk inorganic materials in the voids between the whiskers using sol-gel processing, electrochemical deposition and photoelectrochemical characterization of the obtained components.

基于我们在通过涂覆纤维素或金属盐纳米纤维模板形成氧化物纳米管方面的经验，这个新项目的科学目标是开发一种通用的模块化方法，用于基于多糖晶须的有序模板设计分层组织材料。在多糖晶须上的无机纳米管形成将包括金属化、溶胶-凝胶或电化学沉积。提出了一种新颖的太阳能电池设计概念，该太阳能电池具有完全可访问的基于3D多孔纳米管的架构，该架构嵌入在半导体材料中，通过光电效应产生电荷载流子，以展示我们的模块化结构的多功能性。在新设计的染料敏化太阳能电池中，通过模板纤维素晶须的金属化形成的并入的金属纳米线将导致快速和有效的电子传输到背电极。拟议的研究计划包括三个主要的科学部分：形成高密度网络的有序阵列的表面结合纤维素晶须作为一个中心问题;形成无机纳米管或散装无机材料之间的空隙晶须使用溶胶-凝胶处理，电化学沉积和光电化学表征所获得的组件。