Eco‐Friendly Sugar‐Based Natural Deep Eutectic Solvents as Effective Electrolyte Solutions for Dye‐Sensitized Solar Cells

2020 ◽  
Vol 7 (7) ◽  
pp. 1707-1712 ◽  
Author(s):  
Chiara Liliana Boldrini ◽  
Norberto Manfredi ◽  
Filippo Maria Perna ◽  
Vito Capriati ◽  
Alessandro Abbotto
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Deep Eutectic Solvents ◽  
Electrolyte Solutions ◽  
Dye Sensitized ◽  
Natural Deep Eutectic Solvents ◽  
Sensitized Solar Cells

scholarly journals Alkali Iodide Deep Eutectic Solvents as Alternative Electrolytes for Dye Sensitized Solar Cells

2021 ◽  
Vol 2 (2) ◽  
pp. 222-236
Author(s):  
Hugo Cruz ◽  
Ana Lucia Pinto ◽  
Noémi Jordão ◽  
Luísa A. Neves ◽  
Luís C. Branco
Keyword(s):  
Solar Cells ◽  
Current Density ◽  
Electrochemical Impedance ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Deep Eutectic Solvents ◽  
Transport Processes ◽  
Experimental Conditions ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Different alkali deep eutectic solvents (DES), such as LiI:nEG, NaI:nEG, and KI:nEG, have been tested as electrolytes for dye sensitized solar cells (DSSCs). These DSSCs were prepared using pure DES or, alternatively, DES combined with different amounts of iodine (I2). The most important parameters, such as open circuit voltage (VOC), short circuit current density (JSC), fill factor (FF), and the overall conversion efficiency (η), were evaluated. Some DES seem to be promising candidates for DSSC applications, since they present higher VOC (up to 140 mV), similar FF values but less current density values, when compared with a reference electrolyte in the same experimental conditions. Additionally, electrochemical impedance spectroscopy (EIS) has been performed to elucidate the charge transfer and transport processes that occur in DSSCs. The values of different resistance (Ω·cm2) phenomena and recombination/relaxation time (s) for each process have been calculated. The best-performance was obtained for DES-based electrolyte, KI:EG (containing 0.5 mol% I2) showing an efficiency of 2.3%. The efficiency of this DES-based electrolyte is comparable to other literature systems, but the device stability is higher (only after seven months the performance of the device drop to 60%).

scholarly journals Dye-sensitized solar cells using deep eutectic solvents mixed with ethanol as an effective electrolyte medium

2018 ◽  
Vol 21 (1) ◽  
pp. 15-23
Author(s):  
Thuy-Duy Thi Nguyen ◽  
Phuong Tuyet Nguyen ◽  
Phuong Hoang Tran
Keyword(s):  
Solar Cells ◽  
Large Scale ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Cost Effective ◽  
Deep Eutectic Solvents ◽  
Dye Sensitized ◽  
Ethanol Medium ◽  
New Type ◽  
Sensitized Solar Cells

This research aims to develop a new type of electrolyte for dye-sensitized solar cells (DSCs) which can be produced in cost-effective and large scale. DSCs using deep eutectic solvents (DESs) mixed with ethanol (50% w/w DES content), as an electrolyte medium, was studied herein for the first time. Ten types of DESs were synthesized and three among them were potential candidates for DSC electrolytes. Compared to toxic and volatile organic solvents, this mixed solvent is more eco-friendly and inexpensive. According to J-V curve measurements, DSCs that used DES-ethanol medium showed promising photovoltaic performance.

scholarly journals Choline chloride-based deep eutectic solvents as effective electrolytes for dye-sensitized solar cells

RSC Advances ◽  
2021 ◽  
Vol 11 (35) ◽  
pp. 21560-21566
Author(s):  
De Nguyen ◽  
Tuan Van Huynh ◽  
Vinh Son Nguyen ◽  
Phuong-Lien Doan Cao ◽  
Hai Truong Nguyen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Large Scale ◽  
Choline Chloride ◽  
Dye Sensitized Solar Cells ◽  
Deep Eutectic Solvents ◽  
Scale Production ◽  
Dye Sensitized ◽  
Large Scale Production ◽  
Sensitized Solar Cells

Electrolytes for dye-sensitized solar cells remain a challenge for large-scale production and commercialization, hindering the wide application of solar cells.

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