scholarly journals ZnO@TiO2 Core/Shell Nanowire Arrays with Different Thickness of TiO2 Shell for Dye-Sensitized Solar Cells

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 325
Author(s):  
Liqing Liu ◽  
Hui Wang ◽  
Dehao Wang ◽  
Yongtao Li ◽  
Xuemin He ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Zno Nanowires ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Tio2 Shell

The ZnO@TiO2 core/shell nanowire arrays with different thicknesses of the TiO2 shell were synthesized, through depositing TiO2 on the ZnO nanowire arrays using the pulsed laser deposition process. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images show that these core/shell nanowires were homogeneously coated with TiO2 nanoparticles with high crystallinity, appearing to be a rather rough surface compared to pure ZnO nanowires. The efficiency of ZnO@TiO2 core/shell structure-based dye-sensitized solar cells (DSSCs) was improved compared with pure ZnO nanowires. This is mainly attributed to the enlarged internal surface area of the core/shell structures, which increases dye adsorption on the anode to improve the light harvest. In addition, the energy barrier which formed at the interface between ZnO and TiO2 promoted the charge separation and suppressed the carrier recombination. Furthermore, the efficiency of DSSCs was further improved by increasing the thickness of the TiO2 shell. This work shows an efficient method to achieve high power conversion efficiency in core/shell nanowire-based DSSCs.

Hierarchical TiO2–B/anatase core/shell nanowire arrays for efficient dye-sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1288-1295 ◽  
Author(s):  
Hong-Yan Chen ◽  
Jie Fan ◽  
Hua-Shang Rao ◽  
Hao-Lin Feng ◽  
Wen-Guang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Titanium Plate ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Hierarchical TiO2–B/anatase core/shell heterojunction nanowire arrays on a titanium plate substrate are synthesized and used as novel photoanode materials for DSSCs.

Synthesis of ZnO@TiO2 core–shell long nanowire arrays and their application on dye-sensitized solar cells

2012 ◽  
Vol 190 ◽  
pp. 303-308 ◽  
Author(s):  
Yamin Feng ◽  
Xiaoxu Ji ◽  
Jinxia Duan ◽  
Jianhui Zhu ◽  
Jian Jiang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Effect of the TiO2 shell thickness on the dye-sensitized solar cells with ZnO–TiO2 core–shell nanorod electrodes

2011 ◽  
Vol 58 ◽  
pp. 19-24 ◽  
Author(s):  
A. Irannejad ◽  
K. Janghorban ◽  
O.K. Tan ◽  
H. Huang ◽  
C.K. Lim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Shell Thickness ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Tio2 Shell

A novel tri-layered photoanode of hierarchical ZnO microspheres on 1D ZnO nanowire arrays for dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (22) ◽  
pp. 16678-16683 ◽  
Author(s):  
Xiaohui Kang ◽  
Chunyang Jia ◽  
Zhongquan Wan ◽  
Jia Zhuang ◽  
Juan Feng
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Zno Nanowires ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Zno Nanostructure ◽  
Dye Sensitized ◽  
Zno Nanowire Arrays ◽  
Hierarchical Microspheres ◽  
Sensitized Solar Cells

A novel tri-layered ZnO nanostructure, consisting of ZnO nanowires as the underlayer, small ZnO hierarchical microspheres as the interlayer and large ZnO hierarchical microspheres as the overlayer, was designed and studied as a photoanode for dye-sensitized solar cells.

TiO2 SUB-MICROSPHERES AS A BI-FUNCTIONAL SCATTERING LAYER FOR HIGH-PERFORMANCE DYE-SENSITIZED SOLAR CELLS

NANO ◽  
2014 ◽  
Vol 09 (05) ◽  
pp. 1440007 ◽  
Author(s):  
YONG DING ◽  
LI'E MO ◽  
LI TAO ◽  
YANMEI MA ◽  
LINHUA HU ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Light Scattering ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
High Yield ◽  
Scattering Layer ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The sub-microspheres play multiple roles in enhancing dye adsorption and light-scattering to improve the performance of dye-sensitized solar cells (DSSCs). In this work, the well-defined TiO 2 sub-microspheres with anatase granular-like nanocrystals are prepared in high yield by combining hydrolytic process with solvothermal treatment. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results indicated that plenty of rhombic nanoparticles with ~ 18 nm diameter having mutual contacts to neighboring nanoparticles were densely self-assembled into sub-microspheres, and abundant mesopores existed in the whole sub-microspheres with superior light scattering ability. The appropriate pore diameter and relatively high specific surface area of the as-obtained sub-microsphere result in a higher dye adsorption. As expected, by using the sub-microspheres as a scattering layer, a higher photovoltaic conversion efficiency of 10.15% is obtained for DSSCs.

scholarly journals Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2150
Author(s):  
Ji-Hye Kim ◽  
Sung-Yoon Park ◽  
Dong-Hyuk Lim ◽  
So-Young Lim ◽  
Jonghoon Choi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Plasma Treatment ◽  
Ruthenium Complex ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Synthesis Process ◽  
Dye Sensitized ◽  
Water Based ◽  
Sensitized Solar Cells

Organic solvents used for electrolytes of dye-sensitized solar cells (DSSCs) are generally not only toxic and explosive but also prone to leakage due to volatility and low surface tension. The representative dyes of DSSCs are ruthenium-complex molecules, which are expensive and require a complicated synthesis process. In this paper, the eco-friendly DSSCs were presented based on water-based electrolytes and a commercially available organic dye. The effect of aging time after the device fabrication and the electrolyte composition on the photovoltaic performance of the eco-friendly DSSCs were investigated. Plasma treatment of TiO2 was adopted to improve the dye adsorption as well as the wettability of the water-based electrolytes on TiO2. It turned out that the plasma treatment was an effective way of improving the photovoltaic performance of the eco-friendly DSSCs by increasing the efficiency by 3.4 times. For more eco-friendly DSSCs, the organic-synthetic dye was replaced by chlorophyll extracted from spinach. With the plasma treatment, the efficiency of the eco-friendly DSSCs based on water-electrolytes and chlorophyll was comparable to those of the previously reported chlorophyll-based DSSCs with non-aqueous electrolytes.

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