Highly efficient ITO-free organic solar cells with a column-patterned microcavity,Energy & Environmental Science

当前位置： X-MOL 学术 › Energy Environ. Sci. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Highly efficient ITO-free organic solar cells with a column-patterned microcavity
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2021-1-27 , DOI: 10.1039/d0ee03387a
Jiang Huang _{1,

2,

3,

4,

5} , Dan Zhao _{1,

2,

3,

4,

5} , Zifan Dou _{1,

2,

3,

4,

5} , Qingshan Fan _{1,

2,

3,

4,

5} , Na Li _{1,

2,

3,

4,

5} , Shuihai Peng _{1,

2,

3,

4,

5} , Haoran Liu _{5,

6,

7} , Yadong Jiang _{1,

2,

3,

4,

5} , Junsheng Yu _{1,

2,

3,

4,

5} , Chang-Zhi Li _{5,

6,

7}

Affiliation

Achieving high-efficiency organic solar cells (OSCs) requires well balancing the trade-off between the voltage loss and photocurrent generation of bulk heterojunction (BHJ) blends. In this work, we develop high-performance ITO-free OSCs through incorporating a newly designed column-patterned microcavity (CPM) for effective optical confinement of thin near-infrared BHJs. With the assistance of optical interference, light scattering and local surface plasmons of patterned electrodes, the photocurrent density (J_sc) values of OSCs are largely improved for thin BHJs with near 100 nm thickness. In addition, the high open circuit voltage (V_oc) and fill factor (FF) are secured in self-assembled monolayer (SAM) treated ITO-free OSCs. As a result, the power conversion efficiencies (PCEs) of ITO-free OSCs in the inverted architecture have reached 15.5% and 17.5% for ternary PBDB-T-SF:ITIC-Th:IT-4F and binary PM6:Y6 blends, respectively, yet exhibiting the desirable features of less incident angle dependence. Overall, these OSCs with CPM not only reach significant performance-enhancement over the corresponding ITO devices, but also represent the best performing ITO-free OSCs so far.

中文翻译：

具有柱状微腔的高效无ITO有机太阳能电池

要获得高效的有机太阳能电池（OSC），需要在电压损失与本体异质结（BHJ）混合物的光电流生成之间取得平衡。在这项工作中，我们通过合并新设计的柱状微腔（CPM）来开发高性能的无ITO OSC，以有效地对薄近红外BHJ进行光学限制。借助于光干扰，图案化电极的光散射和局部表面等离子体激元，对于厚度接近100 nm的薄BHJ，OSC的光电流密度（J _sc）值得到了很大的提高。此外，高开路电压（V _oc）和填充因子（FF）确保在自组装单层（SAM）处理的无ITO OSC中。结果，对于三元PBDB-T-SF：ITIC-Th：IT-4F和二元PM6：Y6混合物，倒置架构中无ITO的OSC的功率转换效率（PCE）分别达到了15.5％和17.5％。，却表现出较小的入射角依赖性。总体而言，这些具有CPM的OSC不仅比相应的ITO设备具有显着的性能增强，而且代表了迄今为止性能最佳的无ITO OSC。

更新日期：2021-02-08

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11