Spray-Coated Silver Nanowires as Top Electrode Layer in Semitransparent P3HT:PCBM-Based Organic Solar Cell Devices
Spray-Coated Silver Nanowires as Top Electrode Layer in Semitransparent P3HT:PCBM-Based Organic Solar Cell Devices
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DOI：
10.1002/adfm.201202523
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发表时间：
2013-04-05
影响因子：
19
通讯作者：
Brabec, Christoph J.
中科院分区：
文献类型：
--
作者：
Krantz, Johannes;Stubhan, Tobias;Brabec, Christoph J.
研究了银纳米线（agnw）薄膜作为半透明倒置有机太阳能电池的顶电极。具有Ag NW顶电极层的半透明聚（3-己基噻吩-2,5-二基）：[6,6]-苯基- c61 -丁酸甲酯（P3HT:PCBM）有机太阳能电池的性能与基于热蒸发、高反射金属银顶电极的参考器件的性能非常接近。对半透明电极的光学损耗进行了详细的研究，并从透射、散射和反射损耗方面进行了分析。对外部后反射器的影响可以提高光学薄器件的光收集效率。从氧化铟锡（ITO）背面和Ag NW前电极的照明下进一步分析透明器件，为深入了解与器件性能相关的垂直微观结构提供了可能。总的来说，Ag NW顶部电极被确立为TCO基电极的重要替代品。实现了效率超过2.0%的半透明器件。
Silver nanowire (Ag NW) thin films are investigated as top electrodes in semitransparent inverted organic solar cells. The performance of semitransparent poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) organic solar cells with Ag NW top electrode layers is found to match very closely the performance of reference devices based on thermally evaporated, highly reflective metal silver top electrodes. The optical losses of the semitransparent electrodes are investigated in detail and analyzed in terms of transmission, scattering, and reflection losses. The impact on an external back reflector is shown to increase the light harvesting efficiency of optically thin devices. Further analysis of transparent devices under illumination from the indium tin oxide (ITO) backside and through the Ag NW front electrode open the possibility to gain deep insight into the vertical microstructure related devices performance. Overall, Ag NW top electrodes are established as a serious alternative to TCO based electrodes. Semitransparent devices with efficiencies of over = 2.0% are realized.