钨青铜的可控制备及在染料敏化太阳能电池中的应用研究

项目名称： 钨青铜的可控制备及在染料敏化太阳能电池中的应用研究

项目编号： No.61306077

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 魏月琳

作者单位： 华侨大学

项目金额： 25万元

中文摘要： 近红外吸收材料－钨青铜应用于染料敏化太阳能电池是一项全新的探索，它将染料敏化电池的吸收波段（300-700nm）拓展到近红外波段（2500nm），从而提高其光电转化效率，具有重要科学意义和实用价值。课题以具有近红外吸收性能的钨青铜为主要研究对象，以揭示钨青铜功能基元微观结构与近红外吸收性能的关系为主线，通过材料的设计合成、性质测定、结构表征、效能评价，揭示钨青铜的组成、结构、性能和制备条件之间的关系，探明钨青铜与二氧化钛纳米晶、敏化染料、电解质和电极的相互作用规律，阐明光子吸收模式、载流子运行机制和电池光电转化效率之间的关系，实现近光子捕获强、吸收波段宽、光电转换效率高的钨青铜－二氧化钛晶态材料的可控制备。解决材料制备和器件组装的科学问题，提供光电转化效率超过10％的染料敏化太阳能电池样机，提升我国吸波材料和染料敏化太阳能电池的自主创新能力，推动相关学科的发展。

中文关键词： 染料敏化太阳能电池；钨青铜；近红外吸收材料；结构设计；可控制备

英文摘要： It is a new exploration that the Near-Infrared Absorption (NIR) materials - tungsten bronzes are applied in dye-sensitized solar cell (DSSC). The incident light harvesting of DSSC is expanded from visible light range (300 - 700nm) to near infrared range (780 - 2500 nm). Thus, more solar radiation may be utilized and the photoelectric conversion efficiency of DSSC will be effectively enhanced. In this study, the near-infrared (NIR) absorption properties of tungsten bronzes will be systematically investigated by the controlled synthesis, physical and chemical properties measurement, structural characterization and effectiveness evaluation etc. The relationship between preparation conditions and composition, structure, performance will be studied. We want to explore the interaction between NIR materials and TiO2, dye, electrode etc. The rules between photoelectric conversion efficiency of DSSC and photon absorption mechanism, photo-carrier transport mechanism will also be investigated. According to the basis of the above investigation, we except to synthesize a novel crystalline materials tungsten bronzes - titanium oxide which possesses high photon acquisition probability, broad-band absorption capacity and photoelectric conversion efficiency. Finally, with the optimal experimental conditions, it is expected that

英文关键词： dye-sensitized solar cell；tungsten bronze；near-infrared absorption (NIR) materials；structure design；controlled preparation