2-Thiohydantoin Moiety as a Novel Acceptor/Anchoring Group of Photosensitizers for Dye-Sensitized Solar Cells

Materials

Aleksandra Bartkowiak¹  Bartosz Orwat¹  Maciej Zalas¹  Ireneusz Kownacki¹  Przemyslaw Ledwon²  Waldemar Tejchman³ 

[1] Faculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego St., 61-614 Poznań, Poland;Faculty of Chemistry, Silesian University of Technology, 9 Marcina Strzody St., 44-100 Gliwice, Poland;Institute of Biology, Pedagogical University of Cracow, 2 Podchorążych St., 30-084 Kraków, Poland;

关键词: thiohydantoin;    DSSC;    anchor;    acceptor;    photovoltaics;    dye;   

DOI  :  10.3390/ma13092065

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown