Bartkowiak Aleksandra, Orwat Bartosz, Zalas Maciej, Ledwon Przemyslaw, Kownacki Ireneusz, Tejchman Waldemar
Faculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland.
Center for Advanced Technology, 10 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland.
Materials (Basel). 2020 Apr 30;13(9):2065. doi: 10.3390/ma13092065.
Very recently, we have reported the synthesis and evaluation of biological properties of new merocyanine dyes composed of triphenylamine moiety, π-aromatic spacer, and rhodanine/2-thiohydantoin-based moiety. Interestingly, 2-thiohydantoin has never been studied before as an electron-accepting/anchoring group for the dye-sensitized solar cells (DSSCs). In the presented study, we examined the applicability of 2-thiohydantoin, an analog of rhodanine, in DSSC technology. The research included theoretical calculations, electrochemical measurements, optical characterization, and tests of the solar cells. As a result, we proved that 2-thiohydantoin might be considered as an acceptor/anchoring group since all the compounds examined in this study were active. The most efficient device showed power conversion efficiency of 2.59%, which is a promising value for molecules of such a simple structure. It was found that the cells' performances were mainly attributed to the dye loading and the ICT molecular absorption coefficients, both affected by the differences in the chemical structure of the dyes. Moreover, the effect of the aromatic spacer size and the introduction of carboxymethyl co-anchoring group on photovoltaic properties was observed and discussed.
最近，我们报道了由三苯胺部分、π-芳香间隔基和罗丹宁/2-硫代乙内酰脲基部分组成的新型部花青染料的合成及其生物学性质评估。有趣的是，2-硫代乙内酰脲此前从未作为染料敏化太阳能电池（DSSC）的电子接受/锚定基团进行过研究。在本研究中，我们考察了罗丹宁类似物2-硫代乙内酰脲在DSSC技术中的适用性。该研究包括理论计算、电化学测量、光学表征以及太阳能电池测试。结果，我们证明2-硫代乙内酰脲可被视为一种受体/锚定基团，因为本研究中考察的所有化合物均具有活性。最有效的器件显示出2.59%的功率转换效率，对于如此简单结构的分子来说，这是一个很有前景的值。研究发现，电池的性能主要归因于染料负载量和ICT分子吸收系数，二者均受染料化学结构差异的影响。此外，还观察并讨论了芳香间隔基大小和引入羧甲基共锚定基团对光伏性能的影响。
