Wanwong Sompit, Sangkhun Weradesh, Wootthikanokkhan Jatuphorn
Division of Materials Technology, School of Energy, Environment and Materials, King Mongkut's University of Technology Thonburi Bangkok 10140 Thailand
Nanotec-KMUTT Center of Excellence on Hybrid Nanomaterials for Alternative Energy, King Mongkut's University of Technology Thonburi Bangkok 10140 Thailand.
RSC Adv. 2018 Mar 2;8(17):9202-9210. doi: 10.1039/c8ra00862k. eCollection 2018 Feb 28.
A boron dipyrromethene (BODIPY) featuring triphenylamine triad, BD, has been synthesized as a co-sensitizer in dye-sensitized solar cells (DSCs). The optical and electrochemical properties of BD have been characterized using UV-vis spectroscopy and cyclic voltammetry. DSCs containing co-sensitizers, N719 and BD, have been prepared in two procedures using co-deposition and stepwise deposition. The influences of the staining processes, co-deposition and stepwise deposition on dye loading, dye dispersion on a TiO photoanode and DSC performance have been investigated using FTIR, SEM-EDS, - test and IPCE measurement, respectively. We found that stepwise co-sensitization provided higher solar cell efficiency, compared to those stained with a co-deposition method. N719/5% BD showed the highest power conversion efficiency of 5.14%. Interestingly, the enhanced device efficiency was 66% higher than that of a device containing the single N719 dye.
一种具有三苯胺三联体的硼二吡咯亚甲基（BODIPY），即BD，已被合成用作染料敏化太阳能电池（DSC）中的共敏化剂。BD的光学和电化学性质已通过紫外可见光谱和循环伏安法进行了表征。含有共敏化剂N719和BD的DSC已通过共沉积和分步沉积两种方法制备。分别使用傅里叶变换红外光谱（FTIR）、扫描电子显微镜-能谱仪（SEM-EDS）、 -测试和入射光子转换效率（IPCE）测量研究了染色过程、共沉积和分步沉积对染料负载量、染料在TiO光阳极上的分散以及DSC性能的影响。我们发现，与采用共沉积方法染色的电池相比，分步共敏化提供了更高的太阳能电池效率。N719/5% BD表现出最高的功率转换效率，为5.14%。有趣的是，增强后的器件效率比含有单一N719染料的器件高66%。
