A composite catalyst of reduced black TiO2−x/CNT: a highly efficient counter electrode for ZnO-based dye-sensitized solar cells

2015 ◽  
Vol 51 (98) ◽  
pp. 17459-17462 ◽  
Author(s):  
Chunyang Zhang ◽  
Yahong Xie ◽  
Junhong Ma ◽  
Jing Hu ◽  
Cancan Zhang
Keyword(s):  
Solar Cells ◽  
Counter Electrode ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Composite Catalyst ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Black Tio2 ◽  
Sensitized Solar Cells

A composite catalyst (reduced black TiO2−x/CNT) was synthesized through a simple sol–gel method and applied as a counter electrode in ZnO-based dye-sensitized solar cells. The resultant DSSCs achieved a PCE of 5.71%.

scholarly journals A New Organic Dye Cordia sebestena Sensitized Solar Cell with Current-Voltage Characteristics

2019 ◽  
Vol 32 (2) ◽  
pp. 342-348
Author(s):  
M. Rekha ◽  
M. Kowsalya
Keyword(s):  
Solar Cells ◽  
Density Functional ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Natural Dye ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Morphological Studies ◽  
Sensitized Solar Cells

Titanium dioxide nanoparticles have been synthesized by a novel modified sol-gel for the fabrication of natural dye sensitized solar cells. The natural photo sensitizer extracted from Cordia sebestena flower was mixed with the precursor solution. The flower dye has put the effort of a surfactant which has resulted colourized TiO2 instead of white TiO2. Whencompared to the conventional sol-gel method, this modified process has enhanced the properties of TiO2 like, morphology, uniformity in dye absorption. It has reduced the agglomeration of TiO2 and dye aggregation significantly. The optimized molecular geometry of sebestenoid D, the major pigment of Cordia sebestena and HOMO-LUMO plot are found using density functional theory. The TiO2 nanoparticles were subjected to structural, optical, spectral and morphological studies which showed improved properties in modified sol-gel process. Ecofriendly and low-cost natural dye sensitized solar cells (DSSC) were fabricated using conventional and pre-dye treated TiO2 sensitized by Cordia sebestena flower extract. The I-V studies showed the solar light photon to electron conversion efficiencies of 0.87 and 1.28 % for sol-gel and modified sol-gel methods, respectively. There has been an enhancement in efficiency by 47 % in modified sol-gel method which is very much promising in terms of efficiency for natural dye sensitized solar cells.

A novel counter electrode material of La0.5Sr0.5CoO3 for dye-sensitized solar cells

2016 ◽  
Vol 09 (01) ◽  
pp. 1650007 ◽  
Author(s):  
Yongfeng Zhong ◽  
Tianze Qin ◽  
Bo Yang ◽  
Xueqin Zuo ◽  
Guang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Perovskite Oxide ◽  
Counter Electrodes ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this work, La0.5Sr0.5CoO3 (LSCO) perovskite oxide with perfect crystallinity was successfully synthesized via a sol–gel method and then used as counter electrodes (CEs) for dye-sensitized solar cells (DSSCs). The DSSCs with LSCO CEs exhibited excellent electrocatalytic activity for the triiodide reduction and yielded a power conversion efficiency of 7.17%, which is greater than that of the Pt electrode (7.06%). Compared with the hydrothermal method and solvothermal method, sol–gel method is more suitable for large scale preparation. This work should open up a new class of CE materials for low-cost and high-efficiency DSSCs.

Synthesis of self-light-scattering wrinkle structured ZnO photoanode by sol–gel method for dye-sensitized solar cells

2013 ◽  
Vol 116 (2) ◽  
pp. 811-816 ◽  
Author(s):  
C. Justin Raj ◽  
S. N. Karthick ◽  
K. V. Hemalatha ◽  
Soo-Kyoung Kim ◽  
Byung Chul Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Optimization of Dye-sensitized Solar Cells Prepared by Pechini Sol-Gel Method

2016 ◽  
Vol 31 (7) ◽  
pp. 739
Author(s):  
YIN Yue-Feng ◽  
LIANG Gui-Jie ◽  
ZHANG Qiang ◽  
PAN Zheng ◽  
LI Wang-Nan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

ZnO nanocrystalline powder prepared by sol-gel method for photoanode of dye sensitized solar cells application

2018 ◽  
Vol 1 (88) ◽  
pp. 12-17 ◽  
Author(s):  
M. Szindler ◽  
M.M. Szindler ◽  
P. Boryło
Keyword(s):  
Zinc Oxide ◽  
Solar Cells ◽  
Solar Cell ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized Solar Cell ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Purpose: The article presents the results of research on ZnO nanopowder prepared using sol-gel method that is the easy process enabling us to control shape and size of particles The purpose of this article is to synthesized ZnO nanostructures by sol-gel method and characterized them for use in dye sensitized solar cells. Design/methodology/approach: Zinc oxide nanopowder was synthesized by using zinc acetate dehydrate as a precursor. The prepared nanopowder has been subjected to structural analysis using a transmission electron microscope (TEM). Scanning Electron Microscopic (SEM) images were taken with a Zeiss Supra 35. Qualitative studies of chemical composition were also performed using the Energy Dispersive Spectrometer (EDS). The structure of zinc oxide was investigated by X-ray crystallography The absorbance of zinc oxide layers with and without dye were measured by Thermo Scientific Evolution 220 spectrophotometer equipped with a xenon lamp in the wavelength range from 190 nm to 1100 nm. Findings: Sol-gel method allows the formation of uniform nanoparticles of zinc oxide. The nanoparticles have been successfully used in photoelectrode of dye sensitized solar cell. The light harvesting efficiency of the electrode it remains in a wide spectral range above 85%, which gives better results than in the case of titanium dioxide. Research limitations/implications: The next step in the research will be to investigate the ZnO/NiO composite on the properties of the photoelectrode of dye sensitized solar cell. Practical implications: he unique properties of produced ZnO nanostructural materials have caused their interest in such fields as medicine, transparent electronics and photovoltaics. Originality/value: The ZnO nanoparticles were prepared using sol-gel method and then effectively used in the photoanode of dye sensitized solar cell.

New modified sol–gel method for preparation SrTiO3 nanostructures and their application in dye-sensitized solar cells

2015 ◽  
Vol 27 (1) ◽  
pp. 118-125 ◽  
Author(s):  
Sousan Gholamrezaei ◽  
Masoud Salavati Niasari ◽  
Mahnaz Dadkhah ◽  
Bijan Sarkhosh
Keyword(s):  
Solar Cells ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Gel Method ◽  
Sol Gel Method ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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