3D TiO2/ZnO composite nanospheres as an excellent electron transport anode for efficient dye-sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51320-51326 ◽  
Author(s):  
Pengfei Cheng ◽  
Yinglin Wang ◽  
Luping Xu ◽  
Peng Sun ◽  
Zisheng Su ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Transit Time ◽  
Dye Sensitized Solar Cells ◽  
High Electron ◽  
Electron Lifetime ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The present study aimed to develop a high electron lifetime (τr) and low transit time (τd) photoanode material for dye sensitized solar cells (DSSCs).

TiO2 Film Morphology, Electron Transport and Electron Lifetime in Ultra-fast Sintered Dye-sensitized Solar Cells

2013 ◽  
Vol 1493 ◽  
pp. 121-126
Author(s):  
Matthew J. Carnie ◽  
Cecile Charbonneau ◽  
Matthew Davies ◽  
Ian Mabbett ◽  
Trystan Watson ◽  
...  
Keyword(s):  
Phase Transition ◽  
Solar Cells ◽  
Electron Transport ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Rutile Phase ◽  
Morphological Properties ◽  
Electron Lifetime ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

ABSTRACTWith the application of near-infrared radiation (NIR), TiO2 films for dye-sensitized solar cells (DSCs) on metallic substrates can be sintered in just 12.5 s. The photovoltaic performance of devices made with NIR sintered films match those devices made with conventionally sintered films prepared by heating for 1800 s. Here we characterise the electron transport, electron lifetime and phase-morphological properties of ultrafast NIR sintered films, using impedance spectroscopy, transient photovoltage decay and x-ray diffraction measurements. An important factor in NIR processing of TiO2 films is the peak metal temperature (PMT) and we show that during the 12.5 second heat treatment that a PMT of around 635 °C gives near identical electron transport, electron lifetime and morphological properties, as well comparable photovoltaic performance to a conventionally sintered (500 °C, 30 mins) film. What is perhaps most interesting is that the rapid heating of the TiO2 (to temperatures of up to 785°C) does not lead to a large scale rutile phase transition. As such photovoltaic performance of resultant DSC devices is maintained even though the TiO2 has been at temperatures which traditionally would have reduced cell photocurrents via anatase-to-rutile phase transition.

Low temperature chemically synthesized rutile TiO2 photoanodes with high electron lifetime for organic dye-sensitized solar cells

2013 ◽  
Vol 49 (28) ◽  
pp. 2921 ◽  
Author(s):  
Swapnil B. Ambade ◽  
Rohan B. Ambade ◽  
Rajaram S. Mane ◽  
Go-Woon Lee ◽  
ShoyebMohamad F. Shaikh ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Dye Sensitized Solar Cells ◽  
Organic Dye ◽  
High Electron ◽  
Electron Lifetime ◽  
Rutile Tio2 ◽  
Dye Sensitized ◽  
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

New insights into electrolyte-component biased and transfer- and transport-limited charge recombination in dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (103) ◽  
pp. 84959-84966 ◽  
Author(s):  
Dong-Li Gao ◽  
Yi Wang ◽  
Ping Zhang ◽  
Li-Min Fu ◽  
Xi-Cheng Ai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Density ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
High Electron ◽  
High Electron Density ◽  
Dye Sensitized ◽  
Electrolyte Component ◽  
Sensitized Solar Cells

Charge recombination takes place, respectively, within the frameworks of transfer- and transport-limited recombination mechanisms, at low and high electron density.

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.

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