Phenoxazine Derivative Operates as an Efficient Surface-Grafted Molecular Relay to Enhance the Performance and Stability of CdS- and CdSe-Sensitized TiO<sub>2</sub>
Solar Cells
作者:Chao Shen、Xingzhu Wang、Shasha Tang、Marc Courté、Denis Fichou
DOI:10.1002/cphc.201700238
日期:2017.5.19
We report on a new phenoxazine derivative, 10‐butyl‐phenoxazine‐3‐carboxylic acid (BPCA), that we designed to operate as a molecular relay in semiconductor‐sensitized solar cells (SSCs). After BPCA surface modification and in the presence of a cobalt‐bipyridyl complex acting as a redox mediator, both TiO2/CdS/BPCA and TiO2/CdSe/BPCA SSCs exhibit enhanced photovoltaic performance and stability. In particular
我们报告了一种新的苯并恶嗪衍生物10-丁基-苯并恶嗪-3-羧酸(BPCA),我们将其设计为半导体敏化太阳能电池(SSC)中的分子继电器。BPCA表面改性后,在钴-联吡啶配合物作为氧化还原介质的情况下,TiO 2 / CdS / BPCA和TiO 2 / CdSe / BPCA SSC均显示出增强的光伏性能和稳定性。特别是,基于CdS和CdSe的太阳能电池的功率转换效率分别提高了90%和57%。此外,在300 s之后,TiO 2 / CdS / BPCA SSC的J SC稳定在其初始值的30%,而基于CdS的器件仅保留其初始J SC的1%。。改进的根源来自BPCA的出色的供电子特性,以及它在基于非聚硫的SSC中作为强大的分子继电器的作用。