Stretching Organic Solar Cells using a Gel Composed of Conjugated Liquids and a Polymer Matrix

我们制作了太阳能电池，其活性层由共轭液体分子和聚合物基质组成的凝胶材料构成。凝胶材料的弹性模量和应变分别是常规固体共轭聚合物的0.01倍和100倍。含有凝胶层作为活性层的太阳能电池在未拉伸时的电力转换效率为0.01%。使用常规共轭聚合物作为活性层的太阳能电池的功率转换效率在器件被拉伸至20%时降低。另一方面，在使用凝胶作为活性层的器件中没有观察到功率效率的降低。

We fabricated solar cells whose active layer is constructed from a gel material composed of conjugated liquid molecules and a polymer matrix. Elastic modulus and strain of the gel materials were 0.01 times less than and 100 times larger than those of conventional solid conjugated polymers, respectively. Power conversion efficiency of the solar cells containing the gel layer as an active layer was 0.01% when they were not stretched. The power conversion efficiency of a solar cell using conventional conjugated polymer as an active layer decreases when the device was stretched to 20%. On the other hand, the decrease of power efficiency was not observed in the devices using the gels as an active layer.