scholarly journals Effect of Au Nanoparticles and Scattering Layer in Dye-Sensitized Solar Cells Based on Freestanding TiO2 Nanotube Arrays

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 328
Author(s):  
Kang-Hun Lee ◽  
Seung-Hee Han ◽  
Ana Chuquer ◽  
Hwa-Young Yang ◽  
Jaehi Kim ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
High Efficiency ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Nanotube Arrays ◽  
Scattering Layer ◽  
Au Nps ◽  
Dye Sensitized ◽  
Electron Generation ◽  
Sensitized Solar Cells

The development of high efficiency dye-sensitized solar cells (DSSCs) has received tremendous attention. Many researchers have introduced new materials for use in DSSCs to achieve high efficiency. In this study, the change in power conversion efficiency (PCE) of DSSCs was investigated by introducing two types of materials—Au nanoparticles (Au NPs) and a scattering layer. A DSSC fabricated without neither Au NPs nor a scattering layer achieved a PCE of 5.85%. The PCE of a DSSC based on freestanding TiO2 nanotube arrays (f-TNTAs) with Au NPs was 6.50% due to better electron generation because the plasmonic absorption band of Au NPs is 530 nm, which matches the dye absorbance. Thus, more electrons were generated at 530 nm, which affected the PCE of the DSSC. The PCE of DSSCs based on f-TNTAs with a scattering layer was 6.61% due to better light harvesting by scattering. The scattering layer reflects all wavelengths of light that improve the light harvesting in the active layer in DSSCs. Finally, the PCE of DSSCs based on the f-TNTAs with Au NPs and a scattering layer was 7.12% due to the synergy of better electron generation and light harvesting by plasmonics and scattering. The application of Au NPs and a scattering layer is a promising research area for DSSCs as they can increase the electron generation and light harvesting ability.

scholarly journals A down-shifting Eu 3+ -doped Y 2 WO 6 /TiO 2 photoelectrode for improved light harvesting in dye-sensitized solar cells

2018 ◽  
Vol 5 (2) ◽  
pp. 171054 ◽  
Author(s):  
J. Llanos ◽  
I. Brito ◽  
D. Espinoza ◽  
Ramkumar Sekar ◽  
P. Manidurai
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Light Harvesting ◽  
Electrochemical Impedance ◽  
Dye Sensitized Solar Cells ◽  
Photoelectric Conversion Efficiency ◽  
Visible Radiation ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Y 1.86 Eu 0.14 WO 6 phosphors were prepared using a solid-state reaction method. Their optical properties were analysed, and they was mixed with TiO 2 , sintered, and used as a photoelectrode (PE) in dye-sensitized solar cells (DSSCs). The as-prepared photoelectrode was characterized by photoluminescence spectroscopy, diffuse reflectance, electrochemical impedance spectroscopy (EIS) and X-ray diffraction. The photoelectric conversion efficiency of the DSSC with TiO 2 :Y 1.86 Eu 0.14 WO 6 (100:2.5) was 25.8% higher than that of a DSCC using pure TiO 2 as PE. This high efficiency is due to the ability of the luminescent material to convert ultraviolet radiation from the sun to visible radiation, thus improving the solar light harvesting of the DSSC.

Dye-Sensitized Solar Cells Consisting of 3D-Electrodes—A Review: Aiming at High Efficiency From the View Point of Light Harvesting and Charge Collection

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
Kenshiro Uzaki ◽  
Terumi Nishimura ◽  
Jun Usagawa ◽  
Shuzi Hayase ◽  
Mitsuru Kono ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Light Harvesting ◽  
Fiber Type ◽  
Dye Sensitized Solar Cells ◽  
Three Dimensional ◽  
Charge Collection ◽  
Dye Sensitized ◽  
3D Electrodes ◽  
Sensitized Solar Cells

Directions to high efficiency dye-sensitized solar cells (DSCs) are reviewed in terms of light harvesting and charge collection. Three dimensional DSCs characterized by a double dye layer electrode, a floating electrode, and a fiber type electrode are proposed. The potentiality of each structure was discussed by using each model cell. Transparent conductive layerless electrodes were the key structures in these cells. Fabrication processes and fundamental performances are reported. Finally, it is concluded that dyes having high photoconversion efficiency in the near IR and IR regions are essential for realizing these tandem and hybrid cells.

Realization of ultra-long columnar single crystals in TiO2 nanotube arrays as fast electron transport channels for high efficiency dye-sensitized solar cells

2019 ◽  
Vol 7 (18) ◽  
pp. 11520-11529 ◽  
Author(s):  
Nianqing Fu ◽  
Yandong Duan ◽  
Wei Lu ◽  
Mingshan Zhu ◽  
Guoge Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Hierarchical Architecture ◽  
Nanotube Arrays ◽  
Nanotube Array ◽  
Dye Sensitized ◽  
Transport Channels ◽  
Sensitized Solar Cells ◽  
Fast Electron Transport

An electrically heterogeneous hierarchical-architecture based on an ultra-long columnar single-crystal based TiO2 nanotube array is built for efficient dye-sensitized solar cells with an efficiency up to 10.1%.

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.

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