Controlling electron transport rate and recombination process of TiO2 dye-sensitized solar cells by design of double-layer films with different arrangement modes

2012 ◽  
Vol 78 ◽  
pp. 384-391 ◽  
Author(s):  
A.M. Bakhshayesh ◽  
M.R. Mohammadi ◽  
D.J. Fray
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Double Layer ◽  
Electron Transport Rate ◽  
Dye Sensitized Solar Cells ◽  
Recombination Process ◽  
Transport Rate ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Metal and F dual-doping to synchronously improve electron transport rate and lifetime for TiO2 photoanode to enhance dye-sensitized solar cells performances

2015 ◽  
Vol 3 (10) ◽  
pp. 5692-5700 ◽  
Author(s):  
Yandong Duan ◽  
Jiaxin Zheng ◽  
Ming Xu ◽  
Xiaohe Song ◽  
Nianqing Fu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
High Performance ◽  
Electron Transport Rate ◽  
Dye Sensitized Solar Cells ◽  
Transport Rate ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Tio2 Photoanode

The metal and F dual-doping can synchronously improve electron transport rate and lifetime for high performance TiO2-based dye-sensitized solar cells.

Efficient electron transport in tetrapod-like ZnO metal-free dye-sensitized solar cells

2009 ◽  
Vol 2 (6) ◽  
pp. 694 ◽  
Author(s):  
Wei-Hao Chiu ◽  
Chia-Hua Lee ◽  
Hsin-Ming Cheng ◽  
Hsiu-Fen Lin ◽  
Shih-Chieh Liao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Dye Sensitized Solar Cells ◽  
Metal Free ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Improved Performance of Dye-Sensitized Solar Cells with TiO2 Nanoparticles/Zn-Doped TiO2 Hollow Fiber Photoanodes

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2922 ◽  
Author(s):  
Zainal Arifin ◽  
Suyitno Suyitno ◽  
Syamsul Hadi ◽  
Bayu Sutanto
Keyword(s):  
Solar Cells ◽  
Tio2 Nanoparticles ◽  
Double Layer ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Light Transmittance ◽  
Doped Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this study, dye-sensitized solar cells (DSSCs) were fabricated using double-layer photoanodes consisting of TiO2 nanoparticles (NPs) and Zn-doped TiO2 hollow fibers (HFs). The TiO2 HFs were prepared by co-axial electrospinning and used as the light-scattering layer in the DSSC. The thickness variations of the TiO2 NP and Zn-doped TiO2 HF photoanode layers affect the performance of the DSSC, especially the short-circuit photocurrent density. The thickness of the TiO2 NP layer significantly affected the absorbance of photons and N719 dye molecules in the double-layer photoanode, while that of the Zn-doped TiO2 HF layer affected the scattering of light, as indicated by the low light transmittance in the photoanode. Conventional DSSCs consist of single-layer photoanodes, and exhibit relatively low efficiency, i.e., 1.293% and 0.89% for TiO2 NP and Zn-doped TiO2 HF, respectively. However, herein, the highest efficiency of the DSSC (3.122%) was achieved with a 15 μm NP-5 μm HF photoanode, for which the short-circuit photocurrent density, open-circuit photovoltage, and fill factor were 15.81 mA/cm2, 0.566 V, and 34.91%, respectively.

Effect of TiO2 surface treatment on electron transfer in dye-sensitized solar cells

2022 ◽  
Author(s):  
Suping Jia ◽  
Tong Cheng ◽  
Huinian Zhang ◽  
Hao Wang ◽  
Caihong Hao
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
High Efficiency ◽  
Surface Defects ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Defect States ◽  
Transport Pathway ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Defect states in the TiO2 nanoparticles can cause severe charge recombination and poor electron-transport efficiency when used as a photoanode in dye-sensitized solar cells (DSSCs). Herein, we report a simple and practical way to passivate the surface defects of TiO2 through hydrothermal treating with acetic acid and H2SO4, introducing a high percentage of 101 facets and sulfonic acid functional groups on the TiO2 surface. A high efficiency of 8.12% has been achieved, which is 14% higher than that of untreated TiO2 under the same condition. EIS results prove that the multiacid-treated TiO2 can promote electron transport and reduce charge recombination at the interface of the TiO2 and electrolyte. This work provides an efficient approach to engineer the electron-transport pathway in DSSCs.

Full SnO2 double-layer dye-sensitized solar cells: Slowly increasing phenomenon of power conversion efficiency

Solar Energy ◽  
2020 ◽  
Vol 196 ◽  
pp. 99-106 ◽  
Author(s):  
Junhong Duan ◽  
Shibing Zou ◽  
Chunmin Yang ◽  
Weiqing Liu ◽  
Huaming Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Double Layer ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Mesoporous TiO2 microbead electrodes for solid state dye-sensitized solar cells

RSC Advances ◽  
2014 ◽  
Vol 4 (91) ◽  
pp. 50295-50300 ◽  
Author(s):  
M. Pazoki ◽  
J. Oscarsson ◽  
L. Yang ◽  
B. W. Park ◽  
E. M. J. Johansson ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Electron Transport ◽  
High Voltage ◽  
Fast Electron ◽  
Dye Sensitized Solar Cells ◽  
Mesoporous Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Fast Electron Transport

Mesoporous TiO2 microbead films have been investigated as working electrode for solid state dye sensitized solar cells and 3.5% efficiency was achieved. Low trap density of microbead film leads to high voltage and fast electron transport.

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