基于碳纳米管薄膜和钙钛矿型材料的高效、红外可透太阳电池的研究

项目名称： 基于碳纳米管薄膜和钙钛矿型材料的高效、红外可透太阳电池的研究

项目编号： No.51472019

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 贾怡

作者单位： 中国空间技术研究院

项目金额： 83万元

中文摘要： 在钙钛矿型太阳电池中，聚合物基空穴传导层和贵金属电极材料的使用，大幅度提高了电池的材料成本。本项目拟以具有高透光性、导电性的碳纳米管薄膜作为空穴传导层和电极材料，直接与钙钛矿型有机铅卤化合物构成异质结，从而获得对紫外和可见光吸收、对红外光透过的太阳电池。根据高效钙钛矿型太阳电池对材料的要求，通过工艺参数优化，分别对碳纳米管薄膜的透光性、导电性、功函数和有机铅卤化合物的禁带宽度、载流子浓度、电导率等重要性质进行调控，并改善两者间的界面状态，提高电池的光电转换效率并揭示其工作机理。在此基础上，将红外可透的钙钛矿型太阳电池与铜铟镓硒太阳电池进行叠层组装，通过调控钙钛矿型太阳电池吸收层的厚度，实现两电池在性能上的匹配并有效组装，扩展电池整体的光谱响应范围，为高效、低成本的钙钛矿型太阳电池的实际应用奠定基础。

中文关键词： 碳纳米管；钙钛矿；异质结；太阳电池；转换效率

英文摘要： The use of polymer-based hole-conduction layer and precious metal electrodes in perovskite solar cells has greatly increased their cost. This proposal is to employ carbon nanotube (CNT) film, which is highly light-transparent, conductive and cost-competitive, as both hole-conduction layer and electrode in perovskite solar cells. By configuring CNT film with organolead halide perovskites, heterojunction solar cells which are absorptive to ultraviolet and visible light but transparent to infrared will be fabricated. To satisfy the requirements on materials, process parameters are to be hereby optimized to regulate the basic properties of CNT films (transmittance, conductivity, work function, etc.) and perovskite materials (band gap, carrier concentration, conductivity, etc.) accordingly. Meanwhile, the interface status between CNT films and perovskite materials will be further explored to reveal the work mechanism and enhance the conversion efficiency of the solar cells. Beyond this, these infrared-transparent perovskite solar cells and Cu(In,Ga)Se2 solar cells are to be assembled in tandem structure. The thickness of absorption layer in perovskite solar cells will be regulated, in order to realize performance matching and effective assembly of these two solar cells. Therefore perovskite solar cells with extended range of spectral response, enhanced efficiency and reduced cost are expected.

英文关键词： carbon nanotube;perovskite;heterojunction;solar cell;conversion efficiency