Development of fundamental technology for fabricating fiber-type organic thin film solar cells

为了发展制备光纤型有机薄膜太阳能电池的基础技术，我们研究了在空穴收集侧带有带状Au电极的双面有机太阳能电池，即研究了Au电极之间的距离和PEDOT:PSS作为空穴收集器的电导率对太阳能电池性能的影响。这些结果表明，由于PEDOT:PSS具有较小的阻力，适度地辅助了孔的横向运动，因此可以有效地将光产生的孔收集到条纹金电极上。此外，通过调节电极间距，使条纹金电极侧的开孔比达到80%左右时，获得了最大的电功率。我们相信这些结果为设计光纤型器件的光照射侧电极结构提供了基础知识。

In order to develop the fundamental technology for fabricating fiber-type organic thin film solar cells, we investigated on bifacial organic solar cells with striped Au electrodes on the hole collection side, that is, we examined the influence which both the distance between the Au electrodes and the conductivity of PEDOT:PSS as a hole collector had on the solar cell performance. These results suggested that the photo-produced holes can be effectively collected to the striped Au electrodes because the PEDOT:PSS which had small resistance moderately assisted the lateral motion of the holes. Further, the maximum electric power was obtained when the open aperture ratio of about 80 % for the striped Au electrode side was made by adjusting the interelectrode distance. We believe that these results give fundamental knowledge when designing the electrode structure on the light irradiation side in a fiber-type device.