Mesoporous SiO2@TiO2 Core Shell Spheres for Light Scattering Layer in the Photoande of a Dye-Sensitized Solar Cell

2021 ◽  
Vol 896 ◽  
pp. 73-78
Author(s):  
Toshiki Iwai ◽  
Dang Trang Nguyen ◽  
Kozo Taguchi
Keyword(s):  
Conversion Efficiency ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Core Shell ◽  
Scattering Layer ◽  
Dye Sensitized ◽  
Photoelectric Properties ◽  
Shell Particles ◽  
Sensitized Solar Cells

Mesoporous SiO2@TiO2 (MP-SiO2@TiO2) core-shell particles were fabricated using mesoporous SiO2 particles as a template in order to improve scattering performance and dye adsorption performance of the photoanode of dye-sensitized solar cells (DSSCs). They were used to make the scattering layer of the photoanode. Commercially available submicron TiO2 particles G1 that have the same particle size as the fabricated SiO2@TiO2 particles were also used to make the scattering layer to compare the photoelectric properties of the DSSC. The DSSC with the photoanode without a scattering layer generated a conversion efficiency of 1.54 %. By introducing a scattering layer composed of MP-SiO2@TiO2 to the photoanode, the conversion efficiency was improved to 2.82 %. In addition, the DSSC with the scattering layer composed of MP-SiO2@TiO2 generated higher conversion efficiency than that of the DSSC with the scattering layer composed of G1 (2.35 %). From these results, MP-SiO2@TiO2 particles produced a high performance as scatterers in the photoanode of DSSCs.

Template-free TiO2 hollow submicrospheres embedded with SnO2 nanobeans as a versatile scattering layer for dye-sensitized solar cells

2015 ◽  
Vol 51 (14) ◽  
pp. 2848-2850 ◽  
Author(s):  
Chih-Liang Wang ◽  
Jin-Yun Liao ◽  
Yubao Zhao ◽  
Arumugam Manthiram
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Conversion Efficiency ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Scattering Layer ◽  
Dye Sensitized ◽  
Template Free ◽  
Sensitized Solar Cells

Nanobean SnO2-embedded TiO2 hollow submicrospheres as a scattering layer of dye-sensitized solar cells allow to simultaneously promote dye adsorption, light harvesting, and electron transport, leading to 28% improvement in the conversion efficiency compared to film-based SnO2.

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.

TiO2 cement for high-performance dye-sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 83802-83807 ◽  
Author(s):  
Yu Hou ◽  
Shuang Yang ◽  
Chunzhong Li ◽  
Huijun Zhao ◽  
Hua Gui Yang
Keyword(s):  
Solar Cells ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Energy Conversion Efficiency ◽  
Dye Sensitized ◽  
Degussa P25 ◽  
Sensitized Solar Cells

An energy conversion efficiency of 8.31% is reached by using a cemented photoanode for dye-sensitized solar cells, attaining a 31.1% improvement over the standard Degussa P25 sample.

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.

Effect of surfactants on the morphologies of TiO2 particles with high-performance scattering layer in dye-sensitized solar cells

Solar Energy ◽  
2017 ◽  
Vol 142 ◽  
pp. 1-12 ◽  
Author(s):  
Woranan Lekphet ◽  
Tsai-Chyuan Ke ◽  
Chaochin Su ◽  
Pedaballi Sireesha ◽  
Sasipriya Kathirvel ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Scattering Layer ◽  
Dye Sensitized ◽  
Tio2 Particles ◽  
Sensitized Solar Cells

Design of efficient dye-sensitized solar cells with patterned ZnO–ZnS core–shell nanowire array photoanodes

Nanoscale ◽  
2014 ◽  
Vol 6 (9) ◽  
pp. 4691-4697 ◽  
Author(s):  
Xiang Chen ◽  
Zhiming Bai ◽  
Xiaoqin Yan ◽  
Haoge Yuan ◽  
Guangjie Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Light Harvesting ◽  
Nanowire Array ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The light-harvesting ability and conversion efficiency of DSSCs can be significantly improved with the use of patterned ZnO–ZnS core–shell nanowire array photoanodes.

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