Roll-to-roll fabrication of monolithic large-area polymer solar cells free from indium-tin-oxide
Roll-to-roll fabrication of monolithic large-area polymer solar cells free from indium-tin-oxide
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DOI：
10.1016/j.solmat.2009.04.020
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发表时间：
2009-09-01
影响因子：
6.9
通讯作者：
Krebs, Frederik C.
中科院分区：
文献类型：
--
作者：
Krebs, Frederik C.
提出了一种不涉及氧化铟锡（ITO）的聚合物太阳能电池的卷对卷工艺。使用具有铜覆盖层的市售聚酰亚胺箔作为基材。在 R2R 真空工艺中将钛金属溅射到 kapton/铜上，得到了器件的整体基板和背电极。将活性层通过狭缝模头涂覆到 kapton/Cu/Ti 箔上，然后通过狭缝模头涂覆一层 PEDOT:PSS。前四层不需要图案化，只有最终的前电极需要图案。通过丝网印刷在前电极接触区域中施加保护层，最后通过丝网印刷施加银网格。该器件的拓扑结构和最终栅极几何形状的选择允许将各个电池串联连接成模块。单个电池的尺寸为 150 x 150 毫米。几何填充因子高达 74%，因此远高于在同一基板上使用串联电池轻松实现的几何填充因子。 (C) 2009 Elsevier B.V. 保留所有权利。
A roll-to-roll process for polymer solar cells that does not involve indium-tin-oxide (ITO) is presented. A commercially available kapton foil with an overlayer of copper was used as the substrate. Sputtering of titanium metal onto the kapton/copper in an R2R vacuum process gave the monolithic substrate and back electrode for the devices. The active layer was slot-die coated onto the kapton/Cu/Ti foil followed by slot-die coating of a layer of PEDOT:PSS. No patterning of the first four layers was necessary and only the final front electrode required a pattern. The front electrode was applied by screen printing a protective layer in the areas for front electrode contacts and finally a silver grid was applied by screen printing. The topology of the device and the choice of final grid electrode geometry allowed for serial connection of the individual cells into modules. The individual cells were as large as 150 x 150 mm. The geometric fill factors were as high as 74% and thus much higher than is readily achieved using serially connected cells on the same Substrate. (C) 2009 Elsevier B.V. All rights reserved.