Optimizing graphene content in a NiSe/graphene nanohybrid counter electrode to enhance the photovoltaic performance of dye-sensitized solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (38) ◽  
pp. 17579-17589 ◽  
Author(s):  
Vignesh Murugadoss ◽  
Jing Lin ◽  
Hu Liu ◽  
Xianmin Mai ◽  
Tao Ding ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Counter Electrode ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Mass Ratio ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Graphene Content ◽  
Sensitized Solar Cells

Optimizing the graphene mass ratio in NiSe/GN counter electrodes enabled the fabrication of high performance dye-sensitized solar cells with excellent electrocatalytic activity and chemical stability.

scholarly journals Composites of Vanadium (III) Oxide (V2O3) Incorporating with Amorphous C as Pt-Free Counter Electrodes for Low-Cost and High-Performance Dye-Sensitized Solar Cells

ACS Omega ◽  
2021 ◽  
Vol 6 (17) ◽  
pp. 11183-11191
Author(s):  
Kezhong Wu ◽  
Yingshan Wu ◽  
Pengyuan Fu ◽  
Dandan Yang ◽  
Bei Ruan ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals High-performance dye-sensitized solar cells using Ag-doped CoS counter electrodes

RSC Advances ◽  
2018 ◽  
Vol 8 (34) ◽  
pp. 18792-18799 ◽  
Author(s):  
Guoce Zhuang ◽  
Huiling Liu ◽  
Xiaobo Chen
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The PCE of 5% Ag-doped CoS based solar cells is 20.5% higher than that of solar cells based on un-doped CoS.

Improved Efficiency of Dye Sensitized Solar Cells Using Aligned Carbon Nanotubes

2009 ◽  
Author(s):  
Robert A. Sayer ◽  
Stephen L. Hodson ◽  
Timothy S. Fisher
Keyword(s):  
Carbon Nanotubes ◽  
Solar Cells ◽  
Counter Electrode ◽  
Microwave Plasma ◽  
Dye Sensitized Solar Cells ◽  
Planar Geometry ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Cnt Arrays ◽  
Sensitized Solar Cells

Dye sensitized solar cells (DSSCs) offer many advantages in comparison to their Si-based counterparts, including lower cost of raw materials, faster manufacturing time, and the ability to be integrated with flexible substrates. Although many advances have been made in DSSC fabrication over recent years, their efficiency remains lower than commercially available Si photovoltaic cells. Here we report improved efficiency of TiO2/anthocyanin dye solar cell using aligned arrays of carbon nanotubes (CNTs) as a counter electrode. Dense vertically oriented CNT arrays are grown directly on the counter electrode using microwave plasma chemical vapor deposition and a tri-layer (Ti/Al/Fe) catalyst. The resulting arrays are 30 micrometers in height and have a number density of approximately five hundred million per square millimeter. By directly growing the CNTs on the counter electrode substrate, electrical interface conductance is enhanced. The performance of both as-grown and N-doped (using a nitrogen plasma) CNT arrays is reported. The fabricated DSSCs are tested under AM1.5 light. Increased short circuit current is observed in comparison to graphite and Pt counter electrodes. We attribute this improvement to the large surface area created by the 3D structure of the arrays in comparison to the planar geometry of the graphite and Pt electrodes as well as the excellent electrical properties of the CNTs.

scholarly journals Photovoltaic Characteristics of Multiwalled Carbon Nanotube Counter-Electrode Materials for Dye-Sensitized Solar Cells Produced by Chemical Treatment and Addition of Dispersant

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 250 ◽  
Author(s):  
Sedong Kim ◽  
Otgonbayar Dovjuu ◽  
Soon-Ho Choi ◽  
Hyomin Jeong ◽  
Ji-Tae Park
Keyword(s):  
Electrical Conductivity ◽  
Light Absorption ◽  
Counter Electrode ◽  
Uv Light ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Counter Electrodes ◽  
Multiwalled Carbon ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Multiwalled carbon nanotubes (MWCNTs) have excellent electrical conductivity and good chemical stability, and are used as counter electrodes in dye-sensitized solar cells (DSSCs). The counter electrodes collect electrons from the external circuit and catalyze the redox reaction in the electrolyte. Electrocatalysis is an important step for generating energy from triiodide reduction in DSSCs. In this study, chemically treated MWCNTs were investigated for improving the photovoltaic performance of DSSCs. The MWCNTs were modified through chemical oxidation with sulfuric acid/nitric acid (H2SO4/HNO3) or potassium persulfate/sodium hydroxide (K2S2O8/NaOH). Nanocellulose (CNC) was used as a dispersant to improve the photovoltaic performance and dispersibility as an alternative material for counter electrodes in DSSCs. The counter electrodes were prepared on fluorine-doped tin oxide (FTO) glass substrates by spin coating nanofluids. Morphological and structural investigations were performed using scanning transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) spectroscopy, and Raman spectroscopy. The electrical conductivity and UV light absorption of the DSSCs were analyzed to evaluate their photovoltaic performance. The results of these analyses showed that chemical functionalization and addition of CNC were effective for increasing the electrical conductivity and UV light absorption. Finally, all result trends were the same. Increasing the dispersibility of the counter electrode was found to improve the reduction of I3− at the interface between the MWCNTs and the electrolyte, thereby, improving the energy conversion efficiency.

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