Continuous electron transport pathways constructed in TiO2 sub-microsphere films for high-performance dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (23) ◽  
pp. 17493-17500 ◽  
Author(s):  
Yong Ding ◽  
Yanmei Ma ◽  
Li Tao ◽  
Linhua Hu ◽  
Guang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Transport Pathway ◽  
Transport Pathways ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Electron Transport Pathway

Different concentrations of TiO2 nanocrystallines are introduced into the sub-microspheres of photoanodes to construct a continuous electron transport pathway for high-performance DSSCs.

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.

High-Performance Dye-Sensitized Solar Cells through Graded Electron Transport in Band-Engineered W-TiO2 Cascade Layer

2018 ◽  
Vol 6 (10) ◽  
pp. 13025-13034 ◽  
Author(s):  
Suresh Thogiti ◽  
Ji Young Park ◽  
Chau Thi Thanh Thuy ◽  
Do Kyung Lee ◽  
Bong-Ki Min ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Ultralong TiO2 (B) Nanowires/TiO2 Nanoparticles Composites for Rapid Electron Transport in Dye-Sensitized Solar Cells

2018 ◽  
Vol 18 (12) ◽  
pp. 8337-8344 ◽  
Author(s):  
Min Guo ◽  
Lu Yang ◽  
Jia Chen ◽  
Jun Zhang ◽  
Haijun Su ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Composite Structure ◽  
Dye Sensitized Solar Cells ◽  
Charge Collection ◽  
Transport Pathway ◽  
Electron Diffusion ◽  
Charge Collection Efficiency ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The relatively small electron diffusion coefficient and high charge recombination rate of TiO2 nanoparticle (NP) film limit charge collection in TiO2 NP based dye-sensitized solar cells (DSSCs). Herein, ultralong bending TiO2 (B) nanowires (NWs) were introduced to TiO2 NP photoanode and expected to modify electron transport of DSSCs. The TiO2 (B) NWs/TiO2 NP composite structure was prepared by a facial process combining the stirring hydrothermal method with mechanical mixing method. When the composite structure was applied to DSSCs, the rapid electron transport pathway was formed in photoanode, which was clarified by the small electron transport resistance and long electron diffusion length, improving the charge collection efficiency. Moreover, the scattering effect of TiO2 (B) NWs could enhance the light harvesting, and thus improve the power conversion efficiency (PCE) of DSSCs. The excellent electronic and optical characteristics of TiO2 (B) NWs yield the maximum enhancement of PCE (36.4%) when 50% (wt.%) TiO2 (B) NWs was integrated into TiO2 NP based DSSC. The work provides new insights into the design and tailoring nanowires to enhance the PCE of DSSCs for practical applications.

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.

Benzimidazolyl functionalized ionic liquids as an additive for high performance dye-sensitized solar cells

2011 ◽  
Vol 47 (41) ◽  
pp. 11516 ◽  
Author(s):  
Jie Zhao ◽  
Feng Yan ◽  
Lihua Qiu ◽  
Yueguang Zhang ◽  
Xiaojian Chen ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solar Cells ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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