scholarly journals Low-Cost and Efficient Nickel Nitroprusside/Graphene Nanohybrid Electrocatalysts as Counter Electrodes for Dye-Sensitized Solar Cells

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6563
Author(s):  
Md. Mahbubur Rahman
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Solution Process ◽  
Charge Transfer Resistance ◽  
Counter Electrodes ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Novel nickel nitroprusside (NNP) nanoparticles with incorporated graphene nanoplatelets (NNP/GnP) were used for the first time as a low-cost and effective counter electrode (CE) for dye-sensitized solar cells (DSSCs). NNP was synthesized at a low-temperature (25 °C) solution process with suitable purity and crystallinity with a size range from 5 to 10 nm, as confirmed by different spectroscopic and microscopic analyses. The incorporation of an optimized amount of GnP (0.2 wt%) into the NNP significantly improved the electrocatalytic behavior for the redox reaction of iodide (I-)/tri-iodide (I3-) by decreasing the charge-transfer resistance at the CE/electrolyte interface, lower than the NNP- and GnP-CEs, and comparable to the Pt-CE. The NNP/GnP nanohybrid CE when applied in DSSC exhibited a PCE of 6.13% (under one sun illumination conditions) with the Jsc, Voc, and FF of 14.22 mA/cm2, 0.628 V, and 68.68%, respectively, while the PCE of the reference Pt-CE-based DSSC was 6.37% (Jsc = 14.47 mA/cm2, Voc = 0.635 V, and FF = 69.20%). The low cost of the NNP/GnP hybrid CE with comparable photovoltaic performance to Pt-CE can be potentially exploited as a suitable replacement of Pt-CE in DSSCs.

Facile synthesis of Bi2S3–C composite microspheres as low-cost counter electrodes for dye-sensitized solar cells

RSC Advances ◽  
2014 ◽  
Vol 4 (101) ◽  
pp. 57412-57418 ◽  
Author(s):  
Xue-Qin Zuo ◽  
Xiao Yang ◽  
Lei Zhou ◽  
Bo Yang ◽  
Guang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Synergistic Effect ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Facile Synthesis ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Composite Microspheres ◽  
Sensitized Solar Cells

The synergistic effect of the combination of conductive carbon and Bi2S3 can significantly improve the photovoltaic performance of DSSCs.

scholarly journals Dye-Sensitized Solar Cells Using Mesocarbon Microbead-Based Counter Electrodes

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Chien-Te Hsieh ◽  
Bing-Hao Yang ◽  
Wei-Yu Chen
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Dye Sensitized Solar Cells ◽  
Charge Transfer Resistance ◽  
Counter Electrodes ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Catalytic Sites ◽  
Low Charge ◽  
Sensitized Solar Cells

The dye-sensitized solar cells (DSCs) equipped with mesocarbon microbead (MCMB)-based counter electrodes were explored to examine their cell performance. Three types of nanosized additives including platinum, carbon nanotubes (CNTs), and carbon black (CB) are well dispersed and coated over microscaled MCMB powders. In the design of the counter electrodes, the MCMB graphite offers an excellent medium that allows charge transfer from the ITO substrate to the dye molecule. The active materials such as Pt, CNT, and nanosize CB act as an active site provider for the redox reaction. Among these counter electrodes, the DSCs fabricated with CB electrode exhibit the highest power conversion efficiency. This improved efficiency can be attributed to the fact that the CB nanoparticles not only offer a large number of catalytic sites but also low charge transfer resistance, facilitating a rapid reaction kinetics. Such design of carbon counter electrode has been confirmed to be a promising candidate for replacing Pt electrodes.

scholarly journals Electrochemically Deposited Polypyrrole for Dye-Sensitized Solar Cell Counter Electrodes

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Khamsone Keothongkham ◽  
Samuk Pimanpang ◽  
Wasan Maiaugree ◽  
Saman Saekow ◽  
Wirat Jarernboon ◽  
...  
Keyword(s):  
Solar Cells ◽  
Direct Current ◽  
Dye Sensitized Solar Cells ◽  
Charge Transfer Resistance ◽  
Counter Electrodes ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Conductive Glass ◽  
Alternative Current ◽  
Sensitized Solar Cells

Polypyrrole films were coated on conductive glass by electrochemical deposition (alternative current or direct current process). They were then used as the dye-sensitized solar cell counter electrodes. Scanning electron microscopy revealed that polypyrrole forms a nanoparticle-like structure on the conductive glass. The amount of deposited polypyrrole (or film thickness) increased with the deposition duration, and the performance of polypyrrole based-dye-sensitized solar cells is dependant upon polymer thickness. The highest efficiency of alternative current and direct current polypyrrole based-dye-sensitized solar cells (DSSCs) is 4.72% and 4.02%, respectively. Electrochemical impedance spectroscopy suggests that the superior performance of alternative current polypyrrole solar cells is due to their lower charge-transfer resistance between counter electrode and electrolyte. The large charge-transfer resistance of direct current solar cells is attributed to the formation of unbounded polypyrrole chains minimizing theI3 −reduction rate.

scholarly journals Controlled Assembly of Nanorod TiO2 Crystals via a Sintering Process: Photoanode Properties in Dye-Sensitized Solar Cells

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Saeid Vafaei ◽  
Kazuhiro Manseki ◽  
Soki Horita ◽  
Masaki Matsui ◽  
Takashi Sugiura
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Semiconductor Nanocrystals ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Sintering Process ◽  
Dye Sensitized ◽  
First Time ◽  
Sensitized Solar Cells ◽  
Control Crystallization

We present for the first time a synthetic method of obtaining 1D TiO2 nanorods with sintering methods using bundle-shaped 3D rutile TiO2 particles (3D BR-TiO2) with the dimensions of around 100 nm. The purpose of this research is (i) to control crystallization of the mixture of two kinds of TiO2 semiconductor nanocrystals, that is, 3D BR-TiO2 and spherical anatase TiO2 (SA-TiO2) on FTO substrate via sintering process and (ii) to establish a new method to create photoanodes in dye-sensitized solar cells (DSSCs). In addition, we focus on the preparation of low-cost and environmentally friendly titania electrode by adopting the “water-based” nanofluids. Our results provide useful guidance on how to improve the photovoltaic performance by reshaping the numerous 3D TiO2 particles to 1D TiO2-based electrodes with sintering technique.

Heterocyclic-Functionalized Organic Dyes for Dye-Sensitized Solar Cells: Tuning Solar Cell Performance by Structural Modification

2012 ◽  
Vol 65 (9) ◽  
pp. 1203 ◽  
Author(s):  
Qianqian Li ◽  
Zhongxing Jiang ◽  
Jingui Qin ◽  
Zhen Li
Keyword(s):  
Solar Cells ◽  
Molecular Design ◽  
Organic Dyes ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Solar Cell Performance ◽  
Dye Sensitized ◽  
The Relationship ◽  
Sensitized Solar Cells

Due to their high conversion efficiency and low cost of production, dye-sensitized solar cells based on organic dyes have attracted considerable attention. By utilizing various heterocycles as construction blocks for organic dyes, the performance of solar cells was optimized to exhibit good light-harvesting features and suppress interfacial recombinations. The aim of this review is to highlight recent progress in the molecular design of heterocyclic-functionalized organic dyes for efficient dye-sensitized solar cells, and special attention has been paid to the relationship between chemical structure and the photovoltaic performance of dye-sensitized solar cells based on these dyes.

scholarly journals Dye Sensitized Solar Cells with Low Cost Carbon Nanotubes Electrodes

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
F. M. Al-Marzouki ◽  
S. Abdalla ◽  
S. Al-Ameer
Keyword(s):  
Carbon Nanotubes ◽  
Solar Cells ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Counter Electrodes ◽  
Partial Shading ◽  
Dye Sensitized ◽  
Solid Film ◽  
Solar Conversion ◽  
Sensitized Solar Cells

Dye sensitized solar cells (DSSCs) are very sensitive to electrodes, due to either high cost or easy corrosion problems. To minimize these factors, we present DSSCs with cheap carbon nanotubes as counter electrodes. In addition, we suggest replacing the electrolyte (in typical DSSCs) with a solid film of powdered CsSnI3. The electrical behavior (I-Vcharacteristics) of the proposed device has been measured for different shading conditions. In the light of a theoretical model based on the presence of two diodes, the experimental data have been explained, taking into account a new equivalent circuit for the DSSC. These DSSCs may receive different levels of sun radiation, which stimulates the study of partial shading; so, we have studied the effect of different shadow rates on the solar conversion efficiency of a unit of 4-W-connected DSSCs. The validity of the present model has been examined by fitting it intoI-Vcharacteristics at different shading rates.

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