scholarly journals Ionic Liquids Roles and Perspectives in Electrolyte for Dye-Sensitized Solar Cells

2020 ◽  
Vol 12 (18) ◽  
pp. 7598
Author(s):  
Ruwaida Asyikin Abu Talip ◽  
Wan Zaireen Nisa Yahya ◽  
Mohamad Azmi Bustam
Keyword(s):  
Ionic Liquids ◽  
Solar Cells ◽  
Energy Demand ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Exploration of renewable energy, such as solar energy, is imminent not only to cater to the escalating energy demand but also to address the uprising environmental issues due to heavy usage of non-renewable fossil fuel. The dye-sensitized solar cells (DSSCs) which are considered as the third-generation solar cells, have a huge potential to be commercialized due to their low cost, simplicity in fabrication, and promising photon-to-electrical energy conversion efficiency. Nevertheless, a high cell efficiency can only be achieved when an organic solvent is incorporated into the formulation of the electrolyte, which is prone to evaporation and leakage. As a result, DSSCs become unsuitable for long-run usage due to thermal instability in the electrolyte. The early intention of incorporating ionic liquids (ILs) into the electrolyte was to curb the abovementioned problem and to enable the DSSCs to function as a sustainable energy device. As such, this article briefly reviews how ILs have been incorporated into the electrolyte formulation and the extent of how the ILs can affect the cell efficiency in various electrolyte states. The role of the ILs in a range of electrolytes is also highlighted. This sheds light on the true purpose of introducing ILs into DSSC electrolyte, which is to enhance the ionicity of the electrolyte.

scholarly journals Dye-sensitized solar cells using fluorone-based ionic liquids with improved cell efficiency

2019 ◽  
Vol 3 (12) ◽  
pp. 3510-3517 ◽  
Author(s):  
Ana L. Pinto ◽  
A. Jorge Parola ◽  
João P. Leal ◽  
Isabel B. Coutinho ◽  
Cláudia C. L. Pereira
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Hydrophobic Ionic Liquid ◽  
Highly Hydrophobic ◽  
Sensitized Solar Cells

TiO2 and [P6,6,6,14]2 fluorone highly hydrophobic ionic liquid dye.

Carbon Nanoparticles for Counter Electrode Catalyst in Dye-Sensitized Solar Cells

2008 ◽  
Vol 1102 ◽  
Author(s):  
Prakash Joshi ◽  
Yu Xie ◽  
Jeremiah Mwaura ◽  
Mike Ropp ◽  
David Galipeau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Conversion ◽  
Carbon Nanoparticles ◽  
Counter Electrode ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Energy Conversion Efficiency ◽  
Carbon Nanoparticle ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

AbstractWe report dye-sensitized solar cells using low cost carbon nanoparticles as an alternative to platinum as a counter-electrode catalyst for triiodide reduction. The counter carbon-electrode was deposited onto fluorine-doped tin oxide (FTO) by spin coating from an aqueous colloidal suspension of the blend of carbon nanoparticles and TiO2 nanocrystals. DSSC devices were fabricated using a stable Ru complex dye (Z-907) as the sensitizer. The cells based on carbon-nanoparticle counter electrode were made and then compared with those cells from platinum counter electrode at similar fabrication conditions. The results have shown that the device performance in terms of short circuit current density (Jsc), open circuit voltage (Voc) and energy conversion efficiency (η) from the cells based on carbon nanoparticle counter electrode were comparable to those from platinum counter-electrode devices. The carbon nanoparticle based cells have achieved an overall energy conversion efficiency of 5.55% under one sun AM 1.5 illumination (100 mW/cm2). The carbon nanoparticles showed significant potential as a low cost alternative to the current widely-used platinum.

scholarly journals Optimizing a Simple Natural Dye Production Method for Dye-Sensitized Solar Cells: Examples for Betalain (Bougainvillea and Beetroot Extracts) and Anthocyanin Dyes

2019 ◽  
Vol 9 (12) ◽  
pp. 2515 ◽  
Author(s):  
María José García-Salinas ◽  
María Jesús Ariza
Keyword(s):  
Solar Cells ◽  
Simple Procedure ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Production Method ◽  
Natural Dyes ◽  
Extraction Solvent ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

We present a study about the sensitizers extracted from natural resources. This paper focuses on how to select, extract and characterize natural dyes, giving some guides to establish a protocol for the whole process of fabricating and using these dyes. The influence of the extraction solvent and method, and of parameters such as pH are analyzed. Also, dye precursor and dye extract stability have been studied, as well as how the dye adsorbs onto substrates and the effect of mixing or concentrating the extracts. Results concerning betalain pigments present in bougainvillea and beetroot extracts, and anthocyanins in eggplant extracts, analyzed by using UV-Vis spectrometry, are included. As an example of application, we report procedures intended to test and enhance the dye potential as a main component of dye-sensitized solar cells (DSSCs). DSSCs mimic nature’s photosynthesis and have some advantages like an easy and low-cost fabrication procedure. Their efficiency depends on its design and fabrication process and also on the different components involved. Hence, optimizing each component is essential to achieve the best performance, and thus the dye used as a sensitizer is crucial. We fabricate cells by using a simple procedure: As the interest is focused on the sensitizer, the same consecutive steps are followed, varying only the dye extract. Among all the natural-dyes tested, beetroot extract reaches up to 0.47% cell efficiency, which is near the highest values found in literature for this pigment.

Fabrication electrospun GO/CS/PVA nanofibers and their application in dye-sensitized solar cells

2021 ◽  
Vol 10 (4) ◽  
pp. 103-109
Author(s):  
Mai Ngo Truong Ngoc ◽  
Don Ta Ngoc ◽  
Hoa Nguyen Thi Quynh ◽  
Ngoc Nguyen Hong ◽  
Phat Vien Vinh ◽  
...  
Keyword(s):  
Solar Cells ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Electrical Energy ◽  
Average Diameter ◽  
Energy Conversion Efficiency ◽  
Bandgap Energy ◽  
Characteristic Functional ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this study, graphene oxide (GO) was prepared by the Hummers method. GO/CS/PVA fibers were prepared by an electrospinning method. The structure, morphology and size of the electrospun materials were characterized by X – ray diffraction (XRD) and a scanning electron microscope (SEM). Fourier transformation infrared (FTIR) was used to confirm the formation of PVA/CS/GO. Raman spectroscopy was used to analyze the characteristic functional groups of carbon materials in GO. GO/CS/PVA nanofibers were successfully synthesized with an average diameter of about 108 nm and the bandgap energy was 3.2 eV. The nanofibers were used as a counter electrode for dye-sensitized solar cells. With the natural dye extracted from magenta leaves and the counter electrode based on GO/CS/PVA, the solar energy-to-electrical energy conversion efficiency was 0.65%.

POTENTIAL EVALUATION OF YELLOW COTTON (COCHLOSPERMUM REGIUM) PIGMENTS FOR DYE SENSITIZED SOLAR CELLS APPLICATION

2020 ◽  
pp. 16-21
Author(s):  
PHITCHAPHORN KHAMMEE ◽  
YUWALEE UNPAPROM ◽  
UBONWAN SUBHASAEN ◽  
RAMESHPRABU RAMARAJ
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Plant Materials ◽  
Natural Pigments ◽  
Dye Sensitized ◽  
Study Results ◽  
Sensitized Solar Cells

Recently, dye-sensitized solar cells (DSSC) have concerned significant attention attributable to their material preparation process, architectural and environmental compatibility, also low cost and effective photoelectric conversion efficiency. Therefore, this study aimed to use potential plant materials for DSSC. This research presents the extraction of natural pigments from yellow cotton flowers (Cochlospermum regium). In addition, the natural pigments were revealed that outstanding advantages, including a wide absorption range (visible light), easy extraction method, safe, innocuous pigments, inexpensive, complete biodegradation and ecofriendly. Methanol was used as a solvent extraction for the yellow cotton flower. The chlorophylls and carotenoid pigments extractions were estimated by a UV-visible spectrometer. The chlorophyll-a, chlorophyll-b, and carotenoid yield were 0.719±0.061 µg/ml, 1.484±0.107 µg/ml and 7.743±0.141 µg/ml, respectively. Thus, this study results suggested that yellow cotton flowers containing reasonable amounts appealable in the DSSC production.

Mesoporous Bi2S3 nanorods with graphene-assistance as low-cost counter-electrode materials in dye-sensitized solar cells

Nanoscale ◽  
2014 ◽  
Vol 6 (23) ◽  
pp. 14433-14440 ◽  
Author(s):  
Sheng-qi Guo ◽  
Tian-zeng Jing ◽  
Xiao Zhang ◽  
Xiao-bing Yang ◽  
Zhi-hao Yuan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Counter Electrode ◽  
Electrode Materials ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Hydrothermal Conditions ◽  
Catalytic Activities ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this work, we report the synthesis of mesoporous Bi2S3 nanorods under hydrothermal conditions without additives, and investigated their catalytic activities as the CE in DSCs by I–V curves and tested conversion efficiency.

scholarly journals Ruthenium Sensitizers and Their Applications in Dye-Sensitized Solar Cells

2012 ◽  
Vol 2012 ◽  
pp. 1-21 ◽  
Author(s):  
Yuancheng Qin ◽  
Qiang Peng
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Ruthenium Complexes ◽  
Practical Applications ◽  
Photovoltaic Energy ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Excellent Stability

Dye-sensitized solar cells (DSSCs) have attracted considerable attention in recent years due to the possibility of low-cost conversion of photovoltaic energy. The DSSCs-based ruthenium complexes as sensitizers show high efficiency and excellent stability, implying potential practical applications. This review focuses on recent advances in design and preparation of efficient ruthenium sensitizers and their applications in DSSCs, including thiocyanate ruthenium sensitizers and thiocyanate-free ruthenium sensitizers.

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