Investigation of interlayers for organic tandem solar cells 1)Investigation of the properties of doped solution processed interlayers for polymer tandem solar cells. 2)Development of polymer tandme solar cells with high efficiency.

有机串联太阳能电池中间层的研究1）聚合物串联太阳能电池掺杂溶液处理中间层的性能研究。

• 批准号: 200476906
• 负责人: Dr. David Wynands
• 金额: --
• 依托单位: Leibniz-Institut für Polymerforschung Dresden (IPF)
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/200476906?language=en
• 关键词: Investigation; interlayers; organic; tandem; solar

The planed research has four main parts1) Hybrid tandem solar cells with a polymer based bottom cell and a small molecule based cell on top will be prepared.The interlayer will consist of doped small molecule transport layers with standard dopants.These tandem solar cells act as reference system.2) Investigation of doped solution processed interlayers.Doping of solution processed layers has already been reported by some other groups. These concepts and dopants shall be adopted and applied to interlayers in tandem cells. Here, the used materials do not need to fullfill the requisite of transparancy but will be chosen from a variety of well known standard polymers. The focus is laid on understanding the key properties the interlayer material must have for being dopable, providing ohmic contact to the subcell, and for enabling a recombination without energy loss. 3) Search for and investigation of new transparent and dopable solution processed interlayers. After first progress with the reference materials has been made, the approach shall be enhanced by finding new transport materials for the interlayers, especially transparent ones. For this purpose, the results of the investigation of the reference materials may provide ideas for the synthesis of modified polymers. Also solution processing of small molecules that are already established as transport materials is considered as option. 4) It is the aim to finally realize a polymer tandem cell with high efficency, by using the developed doped interlayers. The state of the art best absorber materials, which provide complementary absorption of the two subcells, will be utilized. The interlayer materials have to be chosen on account of the previous investigations, in order to ensure ohmic contacts to the respective subcells. The design of the interlayers will be optimized in consideration of the optimal thickness and energy level matching to the absorber materials.

计划的研究包括四个主要部分：1）混合叠层太阳能电池，其底部是聚合物基电池，顶部是小分子基电池。中间层将由掺杂的小分子传输层和标准掺杂剂组成。这些叠层太阳能电池作为参考系统。2）掺杂溶液处理中间层的研究。溶液处理层的掺杂已经由其他一些小组报道。这些概念和掺杂剂将被采用并应用于串联电池中的夹层。这里，所使用的材料不需要满足透明性的要求，而是从各种公知的标准聚合物中选择。重点放在理解的关键属性的夹层材料必须具有可掺杂，提供欧姆接触的子电池，并使重组没有能量损失。3)寻找和研究新的透明和可掺杂的溶液处理中间层。在参考材料取得初步进展后，应通过寻找用于夹层的新传输材料，特别是透明材料来加强该方法。为此目的，参考材料的研究结果可以为改性聚合物的合成提供思路。此外，已被确定为运输材料的小分子的溶液加工也被认为是一种选择。4)目的是通过使用所开发的掺杂中间层最终实现具有高效率的聚合物串联电池。将利用提供两个子电池的互补吸收的现有技术最佳吸收体材料。考虑到先前的研究，必须选择夹层材料，以确保与相应子电池的欧姆接触。考虑到与吸收体材料匹配的最佳厚度和能级，将优化夹层的设计。