Improving the electrocatalytic activity and stability of spinel sulfide counter electrodes by trimetallic synergy effects for quantum dot sensitized solar cells

2021 ◽  
Vol 45 (10) ◽  
pp. 4766-4772
Author(s):  
Zihao Liu ◽  
Zizun Tian ◽  
Qianqiao Chen ◽  
Qin Zhong
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Electrocatalytic Activity ◽  
Counter Electrodes ◽  
One Pot ◽  
Synergy Effects ◽  
First Time ◽  
Sensitized Solar Cells

Spinel trimetallic sulfide M0.5Ni0.5Co2S4 (M = Cu and Mn) nanostructures are designed and synthesized for the first time via a facile one-pot solvothermal strategy and used as efficient counter electrodes (CEs) for quantum dot sensitized solar cells (QDSSCs).

Anchoring CuS nanoparticles on accordion-like Ti3C2 as high electrocatalytic activity counter electrodes for QDSSCs

2020 ◽  
Vol 7 (19) ◽  
pp. 3727-3734
Author(s):  
Zizun Tian ◽  
Zhonglu Qi ◽  
Yuhao Yang ◽  
Hailong Yan ◽  
Qianqiao Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Ion Exchange ◽  
Quantum Dot ◽  
Electrocatalytic Activity ◽  
Room Temperature ◽  
Counter Electrode ◽  
Counter Electrodes ◽  
Exchange Method ◽  
Ion Exchange Method ◽  
Sensitized Solar Cells

A Ti3C2/CuS composite has been fabricated as a counter electrode for quantum dot-sensitized solar cells by anchoring CuS nanoparticles on Ti3C2via a facile ion-exchange method at room temperature.

Octahedron shaped lead sulfide nanocrystals as counter electrodes for quantum dot sensitized solar cells

2018 ◽  
Vol 11 (02) ◽  
pp. 1850025 ◽  
Author(s):  
Tingting Xu ◽  
Jinglu Hu ◽  
Pengli Wei ◽  
Xiulan Qin ◽  
Tao Huang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Solar Cells ◽  
Low Temperature ◽  
Quantum Dot ◽  
Counter Electrodes ◽  
Pbs Nanocrystals ◽  
Aqueous Solvent ◽  
Cds Quantum Dot ◽  
First Time ◽  
Sensitized Solar Cells

PbS nanocrystals with octahedron shape are synthesized by a low temperature approach with presence of cation/anion surfactants in aqueous solution. CdS quantum dot sensitized solar cells (QDSSCs) based on these novel octahedron shaped PbS counter electrodes (CEs) are fabricated for the first time, achieving PCE of 1.54%. It is observed that the octahedron shaped PbS CE shows higher electrocatalytic activity compared with the Pt CE, indicating that the PbS nanocrystals with a uniformly distributed size is a superior candidate as CEs for QDSSCs application. This work may provide new route for preparing PbS from aqueous solvent medium through a simple synthesis route.

scholarly journals CoS/Nanocarbon Composite as a Catalytic Counter Electrode for Improved Performance of Quantum Dot-Sensitized Solar Cells

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Wen Yang ◽  
Yang Sun ◽  
Peizhi Yang ◽  
Xiaobo Chen
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Hydrothermal Method ◽  
Active Sites ◽  
Counter Electrode ◽  
Continuous Illumination ◽  
Counter Electrodes ◽  
One Pot ◽  
Transfer Resistance ◽  
Sensitized Solar Cells

CoS/nanocarbon (NC) composites were prepared via a one-pot hydrothermal method and were used as counter electrodes (CEs) in quantum dot-sensitized solar cells (QDSCs). The CoS/nanocarbon (NC) composite thin film CE has been prepared via a one-pot hydrothermal method. Addition of NC to the solution before hydrothermal treatment led to a CoS/NC composite with a good dispersion of conducting NC. The nanoscaled CoS in the composite CE provides abundant catalytic sites, and the carbon particle framework also acts as highly conductive paths for fast charge transport from the counter electrode (highly catalytic CoS active sites) to the photoanode. The optimized CoS/NC composite CE showed a two-order decrease in the charge-transfer resistance, compared to the pure CoS CE. The TiO2/CdS/CdSe/ZnS-based QDSC using the optimized CoS/NC composite CE shows enhanced photovoltaic performance with a power conversion efficiency of 4.46% and good stability (94.8% retention after 100 h continuous illumination).

scholarly journals Quantum Dot Sensitized Solar Cell: Photoanodes, Counter Electrodes, and Electrolytes

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2638
Author(s):  
Nguyen Thi Kim Chung ◽  
Phat Tan Nguyen ◽  
Ha Thanh Tung ◽  
Dang Huu Phuc
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Quantum Dot ◽  
Photon Absorption ◽  
Dye Molecules ◽  
Charge Generation ◽  
Counter Electrodes ◽  
Advantages And Disadvantages ◽  
Efficiency Performance ◽  
Sensitized Solar Cells

In this study, we provide the reader with an overview of quantum dot application in solar cells to replace dye molecules, where the quantum dots play a key role in photon absorption and excited charge generation in the device. The brief shows the types of quantum dot sensitized solar cells and presents the obtained results of them for each type of cell, and provides the advantages and disadvantages. Lastly, methods are proposed to improve the efficiency performance in the next researching.

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