Cheng Hao-Wen, Juan Chien-Yao, Mohapatra Anisha, Chen Chung-Hao, Lin Yu-Che, Chang Bin, Cheng Pei, Wang Hao-Cheng, Chu Chih Wei, Yang Yang, Wei Kung-Hwa
Department of Materials Science and Engineering, Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 3001, Taiwan.
Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu 3001, Taiwan.
Nano Lett. 2021 Mar 10;21(5):2207-2215. doi: 10.1021/acs.nanolett.0c05045. Epub 2021 Feb 18.
In this paper, a universal approach toward constructing a new bilayer device architecture, a few-nanometer-thick third-component layer on a bulk-heterojunction (BHJ) binary blend layer, has been demonstrated in two different state-of-the-art organic photovoltaic (OPV) systems. Through a careful selection of a third component, the power conversion efficiency (PCE) of the device based on PM6/Y6/layered PTQ10 layered third-component structure was 16.8%, being higher than those of corresponding devices incorporating the PM6/Y6/PTQ10 BHJ ternary blend (16.1%) and the PM6/Y6 BHJ binary blend (15.5%). Also, the device featuring PM7/Y1-4F/layered PTQ10 layered third-component structure gave a PCE of 15.2%, which is higher than the PCEs of the devices incorporating the PM7/Y1-4F/PTQ10 BHJ ternary blend and the PM7/Y1-4F BHJ binary blend (14.2 and 14.0%, respectively). These enhancements in PCE based on layered third-component structure can be attributed to improvements in the charge separation and charge collection abilities. This simple concept of the layered third-component structure appears to have great promise for achieving high-performance OPVs.
在本文中，在两种不同的先进有机光伏（OPV）系统中，展示了一种构建新型双层器件结构的通用方法，即在本体异质结（BHJ）二元共混层上制备几纳米厚的第三组分层。通过精心选择第三组分，基于PM6/Y6/层状PTQ10层状第三组分结构的器件的功率转换效率（PCE）为16.8%，高于包含PM6/Y6/PTQ10 BHJ三元共混物（16.1%）和PM6/Y6 BHJ二元共混物（15.5%）的相应器件。此外，具有PM7/Y1-4F/层状PTQ10层状第三组分结构的器件的PCE为15.2%，高于包含PM7/Y1-4F/PTQ10 BHJ三元共混物和PM7/Y1-4F BHJ二元共混物的器件的PCE（分别为14.2%和14.0%）。基于层状第三组分结构的PCE的这些提高可归因于电荷分离和电荷收集能力的改善。层状第三组分结构这一简单概念似乎对于实现高性能有机光伏器件具有很大的前景。
