Hou Yiwen, Wang Qiuning, Huang Ciyuan, Yang Tao, Shi Shasha, Yao Shangfei, Ren Donglou, Liu Tao, Zhang Guangye, Zou Bingsuo
Julong College, Shenzhen Technology University, Shenzhen 518118, China.
College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China.
Molecules. 2022 Sep 5;27(17):5713. doi: 10.3390/molecules27175713.
In this work, we performed a systematic comparison of different duration of solvent vapor annealing (SVA) treatment upon state-of-the-art PM6:SY1 blend film, which is to say for the first time, the insufficient, appropriate, and over-treatment's effect on the active layer is investigated. The power conversion efficiency (PCE) of corresponding organic solar cell (OSC) devices is up to 17.57% for the optimized system, surpassing the two counterparts. The properly tuned phase separation and formed interpenetrating network plays an important role in achieving high efficiency, which is also well-discussed by the morphological characterizations and understanding of device physics. Specifically, these improvements result in enhanced charge generation, transport, and collection. This work is of importance due to correlating post-treatment delicacy, thin-film morphology, and device performance in a decent way.
在这项工作中，我们对最先进的PM6:SY1共混膜进行了不同时长的溶剂蒸汽退火（SVA）处理的系统比较，也就是说首次研究了不足、适度和过度处理对活性层的影响。对于优化后的体系，相应有机太阳能电池（OSC）器件的功率转换效率（PCE）高达17.57%，超过了另外两个对照体系。适当调整的相分离和形成的互穿网络在实现高效率方面起着重要作用，这一点也通过形态表征和器件物理理解得到了很好的讨论。具体而言，这些改进导致了电荷产生、传输和收集的增强。这项工作很重要，因为它以一种恰当的方式关联了后处理的精细程度、薄膜形态和器件性能。
