三维连通网络结构氧化锌基染料敏化太阳能电池及其机理研究

项目名称： 三维连通网络结构氧化锌基染料敏化太阳能电池及其机理研究

项目编号： No.11204070

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 物理学I

项目作者： 段金霞

作者单位： 湖北大学

项目金额： 28万元

中文摘要： 提高电池内部电荷传输与收集速率，减少传输过程中载流子复合引起的能量损耗是进一步提高染料敏化太阳能电池(DSSC)光伏特性的必要措施之一。本项研究拟采用一种蒸发诱导自组装法于较低温度（低于250℃）在透明导电(TCO)衬底上直接制备三维连通网络结构氧化锌膜，形成相应的光阳极。通过在DSSC电池中引入三维连通网络结构，利用其高比表面积和良好的连通性，解决DSSC电池中高效率光捕获和减少电子空穴对复合的关键问题，达到增大光电流、提升电池光电转换效率的目的。本项目提出并建立三维连通网络结构及其DSSC电池工作电极的模型和实验方案，获得基于结构参数可调的三维连通网络结构的DSSC电池；探索三维连通网络结构微观结构对光捕获、载流子输运与电池特性的影响，分析其DSSC电池内部的电荷传输机理，得到新型DSSC电池材料和原型器件。这为高效、低成本DSSC电池的研发与应用探索了一条新路。

中文关键词： 太阳能电池；钙钛矿；复合结构；光伏特性；单色光转换效率

英文摘要： It is one of the important approaches for high efficient dye-sensitized solar cells (DSSC)to enhance charge transfer and collect speed and shorten energy loss induced by carrier recombination in transport process. In this work, three-dimensional (3D) interconnected ZnO networks are prepared by a simple evaporation-induced-assembly method and form 3D photoanode. 3D interconnected networks with large specific surface area and excellent connectivity for the photoanode in DSSC are used to solve high-effective light harvesting and reducing electron-hole recombination, which are the key issues for increasing photocurrent and achieving a high solar energy conversion efficiency. Herein, we construct new design models and experiment methods for 3D interconnected networks and its photoanode, gain structure-controllable 3D network solar cells and explore the influence of microstructure to light-harvesting, carrier transport and photovoltaic properties, elucidate interior charge transport mechanism and develop corresponding new-type cell materials and prototype devices, which will find a new way to research and develop high efficient, low-cost solar cells.

英文关键词： Solar cells；perovskite；composite structure；photovoltaic properties；monochromatic incident photon-to-electron conversi