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Synthesis, characterization and application of Ru(II) complexes containing pyridil ligands for dye-sensitized solar cells

Dayan Osman, Özdemir Namik, Yakuphanoğlu Fahrettin, Şerbetci Zafer, Bilici Ali

Materials Science Poland

2020

Vol. 38, No. 3

450--458

In this research, a series of Ru(II) complexes, ([Ru(1-7)(ina)(NCS)2] (1-7=5-[6-(5-mercapto-1,3,4-oxadiazol-2-yl)pyridin- 2-yl]-1,3,4-oxadiazole-2-thiol’s, ina=isonicotinic acid) were synthesized and characterized using different spectroscopic and analytic techniques, such as NMR, UV, IR, CV and CHN. Also, the new complexes were used in dye-sensitized solar cells (DSSC) as sensitizers. Current-voltage characteristics showed that the modifications of ligands clearly affected DSSC yield. Additionally, DFT calculations were performed and showed locations of frontier molecular orbitals of the complexes. While the locations of HOMO and HOMO – 1 orbitals are on Ru(II) metal center and SCN− ligands, the location of LUMO and LUMO + 1 orbitals are on the 1-7 ligands.

Influence of carbon nanotubes on properties of dye-sensitised solar cells

Dobrzański L. A., Wierzbicka A., Drygała A., Lukaszkowicz K.

Archives of Materials Science and Engineering

2015

Vol. 74, nr 1

32--44

Purpose: The purpose of the work is to examine the influence of carbon nanotubes on the properties of dye-sensitised solar cells. Design/methodology/approach: The research material consisted of samples of glass plates with a conductive layer of FTO onto which layers were subsequently deposited of TiO2 titanium dioxide and titanium dioxide with an absorbed dye, a high conductivity PEDOT:PSS polymer with multi-walled carbon nanotubes, carbon black and graphite. Findings: The application of carbon nanotubes as one of electrodes in a dye-sensitised solar cell is significantly improving the effectiveness of the dye-sensitised solar cell being manufactured. Research limitations/implications: Carbon nanotubes are a good potential material for optoelectronics and photovoltaics. Practical implications: Carbon nanotube electrodes feature high conductivity and high visible light transmission. Originality/value: It is possible to change a structure of a dye-sensitised solar cell by replacing the commonly used platinum in a counter electrode with another electrode permeable for visible light made of a high conductivity PEDOT:PSS polymer with multi-walled carbon nanotubes.