Synthesis of TiO2 Nanopowders and their Applications in Dye-Sensitized Solar Cell

2010 ◽  
Vol 663-665 ◽  
pp. 848-851
Author(s):  
Jian Sun ◽  
Yan Xiang Wang ◽  
Min Xu ◽  
Ting Li Ma ◽  
Xue Yun Fan
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Efficiency ◽  
Low Cost ◽  
Short Circuit ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Tio2 Nanopowders

Dye-sensitized solar cells (DSSC) are currently attracting widespread interest for the conversion of sunlight into electricity because of their low cost and high efficiency. In these cells, photo-anode is one of the key components for high power conversion efficiencies. In this paper, TiO2 nanopowders were prepared by the non-hydrolytic sol-gel method using TiCl4 as precursor, absolute ethanol and isopropanol as oxygen donor. Several different TiO2 nanopowders were used to fabricate TiO2 solar cells, and properties of TiO2 solar cells were characterized. The solar cell prepared with grainsize 50~80nm TiO2 nanopowders generated a short-circuit photocurrent of 13.17 mA/cm2, an open-circuit photovoltage of 789 mV, a fill factor of 69.8% and the efficiency of 7.25% under the light intensity of 100 mW/cm2.

scholarly journals Performance Comparison between Dyes on Single Layered TiO2 Dye Sensitized Solar Cell

2014 ◽  
Vol 1008-1009 ◽  
pp. 78-81
Author(s):  
Nair Gomesh ◽  
Z. M. Arief ◽  
Syafinar Ramli ◽  
M Irwanto ◽  
Y. M. Irwan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Organic Dyes ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Electrical Performance ◽  
Blue Dye ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye Sensitized Solar Cells (DSSC) is another kind of solar cell from the third generation that forms a photovoltaic. DSSC is designed to reduce cost from usage of expensive material in conventional solar panels. The purpose of this project is to fabricate and compare dye sensitized solar cells (DSSC) by using organic dye from blueberry and blue dye from chemical substances. The DSSC is fabricated using ‘Doctor Blade’ method. Results are based on investigating the electrical performance and characteristic of the fabricated TiO2 solar cell based on these comparisons of dyes in order to investigate the potential of organic dyes as a light absorbing mechanism. The required data that is investigated are the open circuit voltage, Voc, short circuit current, Isc, fill factors, solar cells efficiency and UV absorption. Result shows good potential in the blueberry dyes as a sensitizer but further investigation is needed in order to fully understand the characteristic of these organic dyes.

Dye-Sensitized Solar Cells Based on Novel Mixed Dyes

2011 ◽  
Vol 383-390 ◽  
pp. 5510-5515
Author(s):  
Tien Tsan Hung
Keyword(s):  
Solar Cells ◽  
Electrochemical Impedance ◽  
Short Circuit ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Membrane Electrode ◽  
Dye Sensitized ◽  
Phthalocyanine Derivative ◽  
Sensitized Solar Cells

Novel phthalocyanine derivative and azo derivative have been synthesized as photosensitizers for the dye-sensitized solar cells (DSSCs). We used sol-gel method to prepare the titanium oxide (TiO2) membrane electrode of the DSSCs. The crystalline phase and surface morphology of TiO2 were characterized by using X-ray diffraction (XRD), and field emission scanning electron microscopy (FE-SEM) to investigate the effects of processing parameters on the films characteristic, microstructure and thickness. The performance of DSSCs was characterized by using electrochemical impedance spectroscopy (EIS) and current-voltage curve analysis. The sensitizing properties of phthalocyanine derivative, azo derivative and mixed dyes were studied, and it was found that the cell consisted of mixed dyes generated the highest power conversion efficiency () of 2.3 %, short circuit photocurrent density (Jsc) of 13.6 mA cm-2, open circuit photovoltage (Voc) of 0.46 V and fill factor (FF) of 0.37 under simulated AM 1.5 irradiation (100 mW cm-2) with a active area of 0.25 cm2.

The Preparation of ZnO Nanopowders and Dye Sensitized Solar Cells By Sol-Gel Method

2012 ◽  
Vol 512-515 ◽  
pp. 1533-1536
Author(s):  
Yan Xiang Wang ◽  
Sun Jian ◽  
Bing Xin Zhao
Keyword(s):  
Solar Cells ◽  
Zno Nanoparticles ◽  
Raw Materials ◽  
Short Circuit ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Molar Concentration ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this paper, ZnO nanopowders and dye sensitized solar cells were prepared by sol-gel and screen printing method, respectively. First, ZnO nanopowders were synthesized by using zinc acetate, ethanol and diethanolamined as raw materials. The effects of Zn2+ molar concentration on the microstructure and photocatalytic efficiency of ZnO nanopowders were investigated. When Zn2+molar concentration were 0.4M, 0.6M, 0.8M and 1.2M, ZnO nanoparticles with diameter of about 80~100nm were obtained. When Zn2+ molar concentration reached 2.4M, ZnO nanobowls consisted of nanoparticles with diameter about 80~100nm were synthesized. When Zn2+molar concentration reached 3.6M, ZnO nanoparticles were obtained, and particle size distribution of obtained ZnO nanoparticles became broader. Methyl orange degradation rate of ZnO nanopowders prepared with 0.4M, after treated by ultraviolet radiation for 8 hours, were up to 88.5%. ZnO nanopowders prepared with 1.2M and 3.6M were assembled into solar cells. The properties of the solar cell prepared with 1.2M were optimal. The short-circuit photocurrent, open-circuit photovoltage, fill factor and efficiency were 14.72 mA/cm2, 0.649V, 0.332 and 0.914%, respectively.

Fabrication of Dye Sensitized Solar Cell Based on TiO2 Nanoparticles and Chlorophyll from Pandan Leaf as Active Layer

2012 ◽  
Vol 545 ◽  
pp. 405-409 ◽  
Author(s):  
Nurul Huda Yusoff ◽  
Mohamad Firdaus Rosle ◽  
Surani Buniran
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Active Layer ◽  
Low Cost ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Electrical Current ◽  
Dip Coating ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized

Dye sensitized solar cell (DSSC) is a new class of low-cost solar cell, that belongs to third generation solar cells in thin film based. It is based on a semiconductor formed between a photo-sensitized anode and an electrolyte, known as photoelectrochemical system. A lot of research has been conducted due to their interesting potential for low-cost, lightweight, disposable and having cell efficiency up to 10%. This paper reports the fabrication of dye sensitized solar cells using TiO2 nanoparticles and chlorophyll as active layer. TiO2 nanoparticles were prepared by sol-gel method while the chlorophyll was extracted from Pandanus amaryllifolius (Pandan leaf). TiO2 film was prepared on ITO coated glass using dip coating technique and then immersed overnight in the chlorophyll solution. An electrolyte solution composed of PC-LiClO4 was injected into the cell before sealed using glass that was coated with Pt as top electrode. An active area of 4.48 cm2 was fabricated by black masking the front side. The performance of the device was studied by observing the current-voltage characteristics of the device in dark at ambient temperature and under illumination of 100 mW/cm2 light. It was found that the device showed rectifier property in the dark and able to generate electrical current under light.

Electrical and photoelectrical measurements on ZnO-Nanowires coated with PEDOT:PSS for Dye-Sensitized Solar Cells

2011 ◽  
Vol 1303 ◽  
Author(s):  
Julia Waltermann ◽  
Kay-Michael Günther ◽  
Stefan Kontermann ◽  
Siegfried R. Waldvogel ◽  
Wolfgang Schade
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Transparent Conducting Oxide ◽  
Sol Gel ◽  
Nanowire Array ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Zno Nanowires ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

ABSTRACTDye-sensitized solar cells composed of an n-doped ZnO nanowire array and a p-doped polymer layer appears to be a promising candidate for low-cost production of environment-friendly solar cells. In this work, we investigate hybrid devices consisting of a transparent conducting oxide (TCO) substrate, ZnO-nanowires (ZnO-NW) or a sol-gel prepared ZnO layer, a ruthenium dye (N719) and a PEDOT:PSS or P3HT layer. The dense polycrystalline ZnO layer is able to prevent short circuits, which have a strong effect on the performance of the solar cells. This is demonstrated by the use of only the ZnO layer which improves the open circuit voltage by a factor of 2 and the efficiency by a factor of 1.7 compared to cells with nanowires. That indicates that the system combined with a thin but dense ZnO layer and NW grown on it will show further improvement. Furthermore three different TCO substrates were investigated. Impedance spectroscopy (IS) reveals at least one additional Schottky barrier formed with ZnO:Al substrates. Spectral photovoltage measurements clearly show distinct absorption features correlated with the ZnO and N719 dye.

scholarly journals Henna (Lawsonia inermisL.) Dye-Sensitized Nanocrystalline Titania Solar Cell

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Khalil Ebrahim Jasim ◽  
Shawqi Al-Dallal ◽  
Awatif M. Hassan
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Green Energy ◽  
Dye Sensitized ◽  
Research Activities ◽  
Sensitized Solar Cells

Low-cost solar cells have been the subject of intensive research activities for over half century ago. More recently, dye-sensitized solar cells (DSSCs) emerged as a new class of low-cost solar cells that can be easily prepared. Natural-dye-sensitized solar cells (NDSSCs) are shown to be excellent examples of mimicking photosynthesis. The NDSSC acts as a green energy generator in which dyes molecules adsorbed to nanocrystalline layer of wide bandgap semiconductor material harvest photons. In this paper we investigate the structural, optical, electrical, and photovoltaic characterization of two types of natural dyes, namely, the Bahraini Henna and the Yemeni Henna, extracted using the Soxhlet extractor. Solar cells from both materials were prepared and characterized. It was found that the levels of open-circuit voltage and short-circuit current are concentration dependent. Further suggestions to improve the efficiency of NDSSC are discussed.

scholarly journals Characterization and Performance Evaluation of Dye Sensitized Solar Cell Using Nanostructured TiO2Electrode

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sule Erten-Ela
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
And Performance ◽  
Sensitized Solar Cells

Metal-free organic sensitizer consisting of donor, electron conducting, and anchoring anhydride groups was engineered at molecular level and synthesized. Dye sensitized solar cells based on conjugated naphthalene dye were fabricated using nanoporous electrode. Photoelectrodes with a 7 μm thick nanoporous layer and a 5 μm thick light-scattering layer were used to fabricate dye sensitized solar cells. DSSCs were fabricated in a FTO/nc-TiO2/organic dye/I-/I3-/Pt/FTO device geometry. Dye sensitized solar cell was characterized by current density-voltage (J-V) measurement. All current-voltage (I-V) measurements were done under 100 mW/cm2light intensity and AM 1.5 conditions. The photovoltaic data revealed a short circuit photocurrent density of 1.86 mA/cm2, an open circuit voltage of 430 mV, and a fill factor of 0.63, corresponding to an overall conversion efficiency of 0.53%.

Dye-Sensitized Solar Cells Based on Nanocrystalline Titania Electrodes Made at Various Sintering Temperatures

2007 ◽  
Vol 7 (2) ◽  
pp. 555-559 ◽  
Author(s):  
Elias Stathatos ◽  
Panagiotis Lianos
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Reaction Medium ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Nanocrystalline Titania ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye-sensitized solar cells were made by using nanocrystalline titania deposited on Fluorine-doped SnO2 (FTO) electrodes. Nanocrystalline titania deposition was made by the sol–gel method using reverse micelles of bis(2-ethylhexyl) sulfosuccinate sodium salt (AOT) in cyclohexane as reaction medium. This surfactant could be easily removed from the deposited nanocomposite organic-inorganic film by simple rinsing with distilled water, without affecting titania adherence on FTO electrode. These nanocrystalline titania electrodes were used to make solar cells either without sintering or after sintering at various temperatures. Sintering extensively affected short circuit current but had small effect on device open-circuit voltage. Thus satisfactory photovoltaic response could be obtained even with devices made of non-sintered (room-temperature) titania.

scholarly journals Hibiscus Leachate Dye-Based Low-Cost and Flexible Dye-Sensitized Solar Cell Prepared by Screen Printing

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2748
Author(s):  
Congjun Cao ◽  
Tianning Yang ◽  
Guangxue Chen
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Screen Printing ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized Solar Cell ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Although the price of dye-sensitized solar cells is lower than other solar cells, they still contain some high-cost materials, such as transparent conductive substrates, dyes (ruthenium dyes, organic dyes, etc.), and platinum counter electrodes. To solve this problem, a dye-sensitized solar cell based on hibiscus leaching solution and carbon black–silver electrodes was prepared by screen printing. The prepared low-cost dye-sensitized solar cells were flexible. The open-circuit voltage (Voc) of the obtained dye-sensitized solar cell is 0.65 V, the current density (Jsc) is 90 μA/cm², and the fill factor (FF) is 0.241.

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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