Synthesis and Characterization of Zno Nanoparticles Using Hydrothermal and Sol-Gel Techniques for Dye-Sensitized Solar Cells

2018 ◽  
Vol 26 (9) ◽  
pp. 256-267 ◽  
Author(s):  
H. Musleh ◽  
N. AlDahoudi ◽  
H. Zayed ◽  
S. Shaat ◽  
H. M. Tamous ◽  
...  
Keyword(s):  
Solar Cells ◽  
Zno Nanoparticles ◽  
Low Cost ◽  
Zinc Acetate Dihydrate ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Eosin Y ◽  
Zno Nps ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

ZnO nanoparticles (ZnO NPs) were synthesized using hydrothermal and sol-gel techniques using zinc acetate dihydrate (Zn (CH3COO)2.2H2O) as a row material and methanol as a solvent. The structural properties of ZnO NPs were studied using EDX, XRD, TEM, and the optical properties were characterized using UV-VIS and PL spectroscopies. The synthesized ZnO NPs showed high purity and revealed a wurtzite (hexagonal) crystal structure with particle size (D) ranged from 25 nm to 28 nm. The UV-VIS absorption spectra of ZnO NPs samples and sensitizing dyes were performed. The obtained ZnO NPs exhibited the direct optical bandgap 3.15 eV. Dye-sensitized solar cells (DSSCs) were fabricated using synthesized ZnO NPs as a semiconducting layer, which was dyed with different low cost dyes such as Eosin B (EB), Eosin Y (EY) and Rhodamine B (RB) that was used to sensitize the photoanode (ZnO NPs). The experimental results showed a significant efficiency for the fabricated DSSCs of synthesized ZnO NPs via sol gel technique comparing to hydrothermal technique. The EY dye exhibited the best performance among others, where a conversion efficiency showed a noteworthy improvement from 0.12 to 1.08 %.

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.

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.

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.

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

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.

Sign in / Sign up

Export Citation Format

Share Document