An Interfacial and Bulk Charge Transport Model for Dye-Sensitized Solar Cells Based on Photoanodes Consisting of Core–Shell Nanowire Arrays

2011 ◽  
Vol 133 (46) ◽  
pp. 18663-18672 ◽  
Author(s):  
Justin J. Hill ◽  
Nick Banks ◽  
Kelly Haller ◽  
Mark E. Orazem ◽  
Kirk J. Ziegler
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Transport Model ◽  
Dye Sensitized Solar Cells ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Dye Sensitized ◽  
Bulk Charge ◽  
Sensitized Solar Cells

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

Characterization of a TiO2/Multi-Wall Carbon Nanotube Core–Shell Nanocomposite Synthesized by a Hydrothermal Method

2020 ◽  
Vol 20 (6) ◽  
pp. 3582-3587 ◽  
Author(s):  
Moo-Hyun Seo ◽  
Kyeong-Han Na ◽  
Wan-Hee Yang ◽  
Tae-Hyeob Song ◽  
Won-Youl Choi
Keyword(s):  
Solar Cells ◽  
Electron Microscope ◽  
Carbon Nanotube ◽  
Charge Transport ◽  
Shell Structure ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Dye Sensitized ◽  
Core Shell Structure ◽  
Sensitized Solar Cells

TiO2 is a significant n-type semiconducting material because of its superior electric and photocatalytic properties. Although this material has been extensively studied as a semiconductor electrode for dye-sensitized solar cells for its inherent bandgap and its excellent electrical and chemical properties, the photoelectric efficiency is nevertheless lower than that of the Si-based solar cells, which is generally reported as 13–27%. On the other hand, various carbon structures have been studied to increase the overall charge transport efficiency by reducing the charge transport resistance in the cell while having high electric conductivity. These results are expected to improve the photoelectric conversion efficiency when applied to dye-sensitized solar cells. We fabricated a TiO2/multi-wall carbon nanotube (MWCNT) core–shell structure by a hydrothermal method. The TiO2 anatase phase in the TiO2/MWCNT core–shell structure was confirmed by X-ray diffraction (XRD). The core–shell nanostructure with a diameter of 127 nm to 211 nm was observed by field emission scanning electron microscope (FE-SEM). The morphology of the TiO2/MWCNT core–shell nanocomposite was also analyzed by transmission electron microscope (TEM). The Fourier-Transform Infrared Spectrometer (FT-IR) and Brunauer Emmett and Teller (BET) method were used to observe the chemical bonding and specific surface area of the TiO2/MWCNT core–shell nanocomposite, respectively. The TiO2/MWCNT core–shell composites had a larger specific surface area of 92.00 m2/g, a larger pore volume of 0.33 cm3/g, and a larger pore size of 65.21 nm than commercial TiO2 nanoparticles (P25). The TiO2/MWCNT core–shell structure may provide a high-speed path for photoelectrons to pass quickly and will be useful for various applications, such as solar cells and photocatalysts.

The effect of annealing on the photoconductivity of carbon nanofiber/TiO2 core-shell nanowires for use in dye-sensitized solar cells

2010 ◽  
Vol 97 (4) ◽  
pp. 043102 ◽  
Author(s):  
Caitlin Rochford ◽  
Zhuang-Zhi Li ◽  
Javier Baca ◽  
Jianwei Liu ◽  
Jun Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Carbon Nanofiber ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Shell Nanowires

Electron transfer kinetics in water splitting dye-sensitized solar cells based on core–shell oxide electrodes

2012 ◽  
Vol 155 ◽  
pp. 165-176 ◽  
Author(s):  
Seung-Hyun Anna Lee ◽  
Yixin Zhao ◽  
Emil A. Hernandez-Pagan ◽  
Landy Blasdel ◽  
W. Justin Youngblood ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solar Cells ◽  
Water Splitting ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Electron Transfer Kinetics ◽  
Dye Sensitized ◽  
Oxide Electrodes ◽  
Sensitized Solar Cells
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