Judicious design of L(D-π-A)2 type di-anchoring organic sensitizers for highly efficient dye-sensitized solar cells: Effect of the donor-linking bridges on functional properties
作者:Zhihui Wang、Qiang Chen、Yujie Zou、Jin Chen、Yimeng Luo、Yanfang Liu、Shijie Ding、Peng Cai、Jun Yuan、Mao Liang
DOI:10.1016/j.dyepig.2021.109134
日期:2021.3
of di-anchoring organic sensitizers has been recently recognized as an effective strategy to develop high-efficiency dye-sensitized solar cells (DSSCs). However, the relatively low open-circuit photovoltage (Voc) for di-anchoring dyes have become to be the bottle-neck for further advancing the photovoltaic performance. In this work, two novel L(D-π-A)2 type di-anchoring sensitizers, W11–W12, featuring
最近,人们已经认识到构造双锚定有机敏化剂是开发高效染料敏化太阳能电池(DSSC)的有效策略。然而,用于双锚定染料的相对较低的开路光电压(V oc)已成为进一步提高光伏性能的瓶颈。在这项工作中,两种新颖的L(D-π-A)2型双锚定敏化剂W11–W12具有9H-thieno [2',3':4,5] thieno [3,2-b] thieno [ 2',3':4,5]噻吩[2,3-d]吡咯(TTTP)作为π共轭间隔基已被开发出来,并进行了很好的研究,以系统地研究这些染料的结构-性质关系。通过合理调整供体连接桥,咔唑装饰了W12与使用三苯胺键的W11相比,它们具有显着增强的光收集效率以及自抗聚集能力。更重要的是,已经为W12形成了一种紧密排列的有机层,该有机层得益于优异的染料加载量,这有利于将氧化的电解质与TiO 2表面隔离开,从而更有效地抑制了界面电荷的重组,从而提高了V oc值。在标准AM 1