scholarly journals Facile Synthesis of Nanoporous NiS Film with Inverse Opal Structure as Efficient Counter Electrode for DSSCs

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4647
Author(s):  
Xu Chen ◽  
Yang Zhang ◽  
Yashuai Pang ◽  
Qiwei Jiang
Keyword(s):  
Catalytic Activity ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Catalytic Performance ◽  
Inverse Opal ◽  
Electrodeposition Method ◽  
Photovoltaic Efficiency ◽  
Inverse Opal Structure ◽  
Catalytic Sites ◽  
The Cost

To satisfy the high requirement of catalytic activity for efficient dye-sensitized solar cells (DSSCs), a novel nanoporous NiS film with inverse opal structure and outstanding electrocatalytic properties was prepared by a facile template-assisted electrodeposition method. The inverse opal structure makes the film have a larger specific surface area and more catalytic sites, thereby result to a higher electrocatalytic activity. Compared with the flat NiS/FTO electrode, this kind of nanoporous NiS film with inverse opal structure has higher catalytic activity and can be used as a cheap and efficient Pt-free electrode to replace the traditional Pt/FTO electrode. It is of great significance to reduce the cost and promote the wide application of DSSCs. This study opens up a new experimental exploration for further improving the catalytic activity of NiS electrode and the according photovoltaic efficiency of DSSCs. The template-assisted electrodeposition method proposed in this work provides a facile method for morphology control and an easy to be realized way to optimize the catalytic performance of the metal sulfides counter electrode.

Highly crystalline, small sized, monodisperse α-NiS nanocrystal ink as an efficient counter electrode for dye-sensitized solar cells

2015 ◽  
Vol 3 (31) ◽  
pp. 15905-15912 ◽  
Author(s):  
Xiuwen Wang ◽  
Buhe Batter ◽  
Ying Xie ◽  
Kai Pan ◽  
Yongping Liao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solar Cells ◽  
Strong Interaction ◽  
Active Sites ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

α-NiS nanocrystals exhibit excellent catalytic activity for I3− reduction due to the strong interaction between I1 and α-NiS active sites.

Development of Lower Cost Monolithic Dye-Sensitized Solar Cell with Carbon Counter-Electrode

2019 ◽  
Vol 2 (1) ◽  
pp. 31-35
Author(s):  
Daniel Agaphela ◽  
Matthias Günther ◽  
Samuel Kusumocahyo ◽  
Natalita M. Nursam
Keyword(s):  
Solar Cells ◽  
Sandwich Structure ◽  
Counter Electrode ◽  
Low Cost ◽  
Transparent Conducting Oxide ◽  
Dye Sensitized Solar Cells ◽  
Internal Resistance ◽  
Lower Efficiency ◽  
Dye Sensitized ◽  
The Cost

Dye-sensitized solar cells (DSSCs) were developed as low-cost and environmentally friendly alternatives to other types of solar cells. However, due to efficiency and stability shortcomings, and also because of the cost reductions in crystalline Si cells, DSSCs are not yet commercially successful. Several parameters have to be improved, one of which is the cost that should be reduced further. There are two ideas to achieve this: the platinum electrode can be substituted by a cheaper carbon electrode, and the sandwich structure of the cells, with two glass substrates with a transparent conducting oxide (TCO) layer on them, can be changed to a monolithic structure, in which only one TCO-coated glass substrate is used. In the present project the performance of such monolithic cells with carbon counter-electrode is compared to the performance of cells with sandwich structure that are otherwise identically constructed. The performance assessment was done by means of an I-V curve measurement. The main result is that monolithic cells have a lower efficiency. The data indicate that the internal serial resistance of the monolithic cells was higher than in the sandwich cells. In a further step, three monolithic cells were interconnected in series in a submodule, and the performance of this submodule was assessed. The result indicates that the serial resistance of the three cells that were interconnected in the submodule, including the contacts, was lower than three times the serial resistance of the individual cells including the contacts. This shows that there is a potential for a more efficient usage of monolithic cells by means of a module design that allows for lower resistances in the interconnection of the cells within the module as well as in the module contacts. This should be pursued in further research, as well as the reduction of the internal resistance of the monolithic cells.

Application of Three-Dimensional ZnO Inverse Photonic Crystal in Dye-Sensitized Solar Cells

2012 ◽  
Vol 512-515 ◽  
pp. 1609-1613
Author(s):  
Jing Jing Gao ◽  
Bo Li ◽  
Zhen Dong Liu ◽  
Xing Jian Jiao ◽  
Ji Zhou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photonic Crystals ◽  
Conversion Efficiency ◽  
Photonic Bandgap ◽  
Dye Sensitized Solar Cells ◽  
Three Dimensional ◽  
Inverse Opal ◽  
Dye Sensitized ◽  
Inverse Opal Structure ◽  
Sensitized Solar Cells

Because of the features of photonic localization in photonic bandgap(PBG), the photonic crystals can be coupled to DSSC to increase the conversion efficiency. In this paper, through exploring the preparation of large inverse opal structure of ZnO, we attempt to apply the photonic crystals to the Dye-Sensitized Solar Cells (DSSC) to improve its efficiency. The colloidal crystal template is prepared by self-assembled on FTO substrates, and three-dimensional ZnO inverse opal is synthesized via an electrochemical deposition method in zinc nitrate solution. Then we study the inflations of its surface morphology and photonic bandgap on the solar cell’s photoelectric conversion efficiency.

A graphene quantum dot decorated SrRuO3mesoporous film as an efficient counter electrode for high-performance dye-sensitized solar cells

2017 ◽  
Vol 5 (34) ◽  
pp. 17848-17855 ◽  
Author(s):  
Tao Liu ◽  
Kun Yu ◽  
Lina Gao ◽  
Hui Chen ◽  
Ning Wang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Catalytic Activity ◽  
Quantum Dot ◽  
High Performance ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Synergic Effect ◽  
Graphene Quantum Dot ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The predominant synergic effect of GQDs and SrRuO3CEs drives faster ion diffusions and electron transfer, thereby contributing to excellent catalytic activity of the SRO–GQD CE towards I3−reduction.

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