Effect of Surface Protonation of TiO2 on Charge Recombination and Conduction Band Edge Movement in Dye-Sensitized Solar Cells

2009 ◽  
Vol 113 (34) ◽  
pp. 15417-15421 ◽  
Author(s):  
Zhong-Sheng Wang ◽  
Gang Zhou
Keyword(s):  
Solar Cells ◽  
Conduction Band ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Band Edge ◽  
Conduction Band Edge ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Effect Of Surface

scholarly journals Enhanced Power Conversion Efficiency of Dye-Sensitized Solar Cells by Band Edge Shift of TiO2 Photoanode

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1502 ◽  
Author(s):  
Hye Kyeong Sung ◽  
Yeonju Lee ◽  
Wook Hyun Kim ◽  
Sang-Ju Lee ◽  
Shi-Joon Sung ◽  
...  
Keyword(s):  
Solar Cells ◽  
Control Cell ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Band Edge ◽  
Conduction Band Edge ◽  
Shunt Resistance ◽  
Dye Sensitized ◽  
Surface Modified ◽  
Sensitized Solar Cells

By simple soaking titanium dioxide (TiO2) films in an aqueous Na2S solution, we could prepare surface-modified photoanodes for application to dye-sensitized solar cells (DSSCs). An improvement in both the open-circuit voltage (Voc) and the fill factor (FF) was observed in the DSSC with the 5 min-soaked photoanode, compared with those of the control cell without any modification. The UV–visible absorbance spectra, UPS valence band spectra, and dark current measurements revealed that the Na2S modification led to the formation of anions on the TiO2 surface, and thereby shifted the conduction band edge of TiO2 in the negative (upward) direction, inducing an increase of 29 mV in the Voc. It was also found that the increased FF value in the surface-treated device was attributed to an elevation in the shunt resistance.

Using Orbital Symmetry to Minimize Charge Recombination in Dye-Sensitized Solar Cells

2012 ◽  
Vol 125 (3) ◽  
pp. 1007-1009 ◽  
Author(s):  
Emanuele Maggio ◽  
Natalia Martsinovich ◽  
Alessandro Troisi
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Orbital Symmetry ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Bis-tridentate Ru(ii) sensitizers with a spatially encumbered 2,6-dipyrazolylpyridine ancillary ligand for dye-sensitized solar cells

RSC Advances ◽  
2017 ◽  
Vol 7 (67) ◽  
pp. 42013-42023 ◽  
Author(s):  
Ting-Kuang Chang ◽  
Yun Chi
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Ancillary Ligand ◽  
Dye Sensitized ◽  
Dye Loading ◽  
Sensitized Solar Cells

The sensitizer TF-tBu_C3F7 has shown the highest overall efficiencies of JSC = 18.47 mA cm−2, VOC = 767 mV, FF = 0.71 and PCE = 10.05% under simulated one sun irradiation, due to the fine balance between dye loading and reduced charge recombination.

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.

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