scholarly journals Investigation of sol-gel processed CuO/SiO2 nanocomposite as a potential photoanode material

2015 ◽  
Vol 33 (4) ◽  
pp. 826-834 ◽  
Author(s):  
Tenzin Tenkyong ◽  
Neena Bachan ◽  
J. Raja ◽  
P. Naveen Kumar ◽  
J. Merline Shyla
Keyword(s):  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Cost Effective ◽  
Xrd Analysis ◽  
Potential Candidate ◽  
X Ray Diffraction ◽  
Structural Formation ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

AbstractSynthesis and characterization of a highly efficient photoconductive nanocomposite comprising of two common metal oxides: copper oxide (CuO) and silicon dioxide (SiO2) are being reported in this paper. The CuO/SiO2 nanocomposite has been synthesized using a cost-effective and facile sol gel route. The structural, chemical and optical properties of the prepared samples have been studied using various characterization techniques. The UV-Vis analysis revealed better absorption in the case of the nanocomposite as compared to its parent materials. X-ray diffraction (XRD) analysis has been employed to determine the structural formation of the nanocomposite and the crystallite size with the use of Scherrer’s formula. The photo conductivity study of the sample showed enhanced photocurrent in the case of nanocomposite as compared to its single components, thus, presenting it as a potential candidate for solar cell applications, especially as photoanode material in the dye-sensitized solar cells (DSSC).

scholarly journals Synthesis and Characterizations of LaMnO3 Perovskite Powders Using Sol-Gel Method 

2021 ◽  
Author(s):  
Deniz ÇOBAN ÖZKAN ◽  
Ahmet Türk ◽  
Erdal Celik
Keyword(s):  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Ammonium Hydroxide ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dye Sensitized ◽  
Gel Technique ◽  
Sensitized Solar Cells

Abstract The present research demonstrates the synthesis and characterization of LaMnO3 perovskite powders using the sol-gel technique for dye-sensitive solar cell applications. With this respect, transparent solutions were prepared from La and Mn based precursors, distilled water and citric acid monohydrate. Ammonium hydroxide was incorporated into the La-Mn solution in order to neutralize/precipitate at 24oC for 1 hour in the air. The solution was allowed to evaporate on a hot plate device at 90 °C in the air. The obtained solutions were dried at 90 oC for 24 hours to form a xerogel structure, dried at 200 oC for 2 hours and consequently annealed at 500 and 850 oC for 2 hours in the air. Thermal, structural, microstructural, optical and magnetic properties of the powders were characterized through differential thermal analysis-thermogravimetry (DTA-TG), Fourier transform infrared (FTIR), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), scanning electron microscopy (SEM), Malvern zeta sizer (PSD), UV-vis spectrometer and vibrating sample magnetometer (VSM). The obtained results indicate promise, especially the low band range, that LaMnO3 powders can be used in dye-sensitized solar cells and can positively affect performance and efficiency.

Fabrication and Characterization of TiO2 Nanotubes for Dye-Sensitized Solar Cells

2015 ◽  
Vol 1131 ◽  
pp. 215-220
Author(s):  
Emmanuel Nyambod Timah ◽  
Buagun Samran ◽  
Udom Tipparach
Keyword(s):  
Solar Cells ◽  
Anatase Phase ◽  
Dye Sensitized Solar Cells ◽  
Ammonium Fluoride ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dye Sensitized ◽  
Dc Power ◽  
Sensitized Solar Cells

TiO2nanotubes were successfully synthesized by anodization method of Ti foils. The electrolyte was composed of ethylene glycol (EG), ammonium fluoride (0.3%wt NH4F) and de-ionized water (2% vol H2O). A constant DC power supply of 50 V was used during anodization with anodizing times of 1 hour, 2 hours, 4 hours and 6 hours. The samples were annealed at 450 °C for 2 hours. The TiO2nanotubes were studied by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Structural analysis revealed the presence of pure Ti, and the crystalline anatase phase due to transformation of amorphous TiO2after annealing. The morphology of TiO2nanotube sizes showed an increase in tube diameter with anodizing time from approximately 50 nm to 200 nm. However, the efficiency of dye-sensitized solar cells increased with anodizing times up to a maximum of 5.74 % for anodizing time of 4 hours.

Production and characterization of TiO2 nanoparticle thin films for its application in DSSCs

2020 ◽  
Vol 117 (6) ◽  
pp. 622
Author(s):  
Saranyoo Chaiwichian ◽  
Sumneang Lunput
Keyword(s):  
Thin Films ◽  
Dye Sensitized Solar Cells ◽  
X Ray Diffraction ◽  
X Ray ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Photovoltaic Efficiency ◽  
Transmission Electron ◽  
Sensitized Solar Cells

In this research, TiO2 nanoparticle thin films were successfully prepared on FTO glass substrates through a doctor blade technique, and its application was tested in dye-sensitized solar cells (DSSCs) with different sensitizing dyes such as methylene blue (MB) and methyl orange (MO). The physicochemical properties of intended thin films were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and UV-vis diffuse reflectance spectra (UV-vis DRS) techniques. The experimental results revealed that dipped TiO2 nanoparticle thin films into MB dye solution showed a higher photovoltaic efficiency (1.45%) when compared with the MO dye solution. A reasonable mechanism of DSSCs was also proposed.

Synthesis and characterization of simple cost-effective trans-A2BC porphyrins with various donor groups for dye-sensitized solar cells

2016 ◽  
Vol 40 (7) ◽  
pp. 5704-5713 ◽  
Author(s):  
Ravi Kumar ◽  
Muniappan Sankar ◽  
Vediappan Sudhakar ◽  
Kothandam Krishnamoorthy
Keyword(s):  
Solar Cells ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Cost Effective ◽  
Synthesis And Characterization ◽  
Dye Sensitized ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells

Zn(ii) porphyrin dyes have been synthesized in three steps and exhibited power conversion efficiencies of 2.1 to 4.2% which depend on the electron donating ability of the R group.

scholarly journals An Efficient Metal-Free Hydrophilic Carbon as a Counter Electrode for Dye-Sensitized Solar Cells

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Mojgan Kouhnavard ◽  
Norasikin Ahmad Ludin ◽  
Babak Vazifehkhah Ghaffari ◽  
Kamaruzzaman Sopian ◽  
Norshazlinah Abdul Karim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Counter Electrode ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Cost Effective ◽  
X Ray Diffraction ◽  
Experimental Conditions ◽  
Metal Free ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

This study presents a new cost-effective metal-free counter electrode (CE) for dye-sensitized solar cells (DSSCs). CE was prepared by doctor blading a hydrophilic carbon (HC) particle on a fluorine-doped tin oxide substrate. Thereafter, HC CE was characterized using X-ray diffraction, profilometry, four-point probe testing, and cyclic voltammetry. A 2 µm thick HC CE revealed a comparable catalytic activity to that of the Pt electrode under the same experimental conditions. DSSC based on HC CE was analyzed and showedJscof 6.87 mA/cm2close to that of DSSC with Pt CE (7.0 mA/cm2). More importantly, DSSC based on HC CE yielded a power conversion efficiency (η) of 2.93% under AM 1.5 irradiation (100 mW/cm2), which was comparable to that of DSSC based on standard Pt CE. These findings suggest that HC CE could be a promising CE for low-cost DSSCs.

scholarly journals Synthesis of Cu\(^+\)/bipyridyl Based Complex Towards Dye Sensitized Solar Cell Application

2016 ◽  
Vol 26 (2) ◽  
pp. 165 ◽  
Author(s):  
Vuong Son ◽  
Nguyen Ngoc Ha ◽  
Luong Thi Thu Thuy ◽  
Tran Quang Thinh ◽  
Mai Anh Tuan
Keyword(s):  
Theoretical Calculations ◽  
Dye Sensitized Solar Cells ◽  
Resonance Spectroscopy ◽  
Potential Candidate ◽  
X Ray Diffraction ◽  
Solar Cell Application ◽  
X Ray ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Good Agreement

This study aims to synthesize the Cu+/bipyridyl-based complex using Sonogashira cross coupling. The structure of the ligand and the complex were investigated by nuclear magnetic resonance spectroscopy; by single crystal X-ray diffraction and by UV-VIS absorption spectroscopy. The obtained experimental results were in good agreement with the theoretical calculations. The complex is a potential candidate to be the photo sensitizer in dye-sensitized solar cells. 

Effect of Mn2+ Substitution into the Hst Lattice of ZnO via sol–gel Route for Boosting the Dye-Sensitized Solar Cells Performance

2021 ◽  
Author(s):  
Deepak Kumbhar ◽  
Sagar Delekar ◽  
Sarita Kumbhar ◽  
Ananta Dhodamani ◽  
Namdev Harale ◽  
...  
Keyword(s):  
Solar Cells ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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