INVESTIGATION OF DYE-REGENERATION KINETICS AT DYE-SENSITIZED p-TYPE CuCrO2 FILM/ELECTROLYTES INTERFACE WITH SCANNING ELECTROCHEMICAL MICROSCOPY

NANO ◽  
2014 ◽  
Vol 09 (05) ◽  
pp. 1440008 ◽  
Author(s):  
GETACHEW ALEMU ◽  
BINGYAN ZHANG ◽  
JUNPENG LI ◽  
XIAOBAO XU ◽  
JIN CUI ◽  
...  
Keyword(s):  
Dye Sensitized Solar Cells ◽  
Scanning Electrochemical Microscopy ◽  
Hole Injection ◽  
Kinetic Rate Constant ◽  
Dye Sensitized ◽  
Mesoporous Film ◽  
Dye Regeneration ◽  
P Type ◽  
Kinetics Of ◽  
Electrochemical Microscopy

The power conversion efficiency of p-type dye-sensitized solar cells (DSSC) is determined by the kinetics of hole injection and dye-regeneration reaction at the dye/electrolyte interface. In this work, the photochemical regeneration kinetics of dye adsorbed on CuCrO 2 mesoporous film was investigated by using scanning electrochemical microscopy with feedback mode. Organic P1 and C343 sensitizers in combination with iodide-based and thiolate-based electrolytes were selected to understand the effect of sensitizers and redox shuttles on dye-regeneration process. A fast regeneration kinetic rate constant was confirmed in thiolate-based sample compared with iodide-based electrolyte, indicating that the organic redox shuttle was an efficient mediator to optimize the performance of p-type DSSC.

scholarly journals Effect of TiO2 Photoanodes Morphology and Dye Structure on Dye-Regeneration Kinetics Investigated by Scanning Electrochemical Microscopy

Electrochem ◽  
2020 ◽  
Vol 1 (3) ◽  
pp. 329-343
Author(s):  
Sabina Scarabino ◽  
Kazuteru Nonomura ◽  
Nick Vlachopoulos ◽  
Anders Hagfeldt ◽  
Gunther Wittstock
Keyword(s):  
Porous Electrode ◽  
Dye Sensitized Solar Cells ◽  
Scanning Electrochemical Microscopy ◽  
Transfer Reactions ◽  
Dye Sensitized ◽  
Ticl4 Treatment ◽  
Back Electron Transfer ◽  
Dye Regeneration ◽  
Sensitized Solar Cells ◽  
Electrochemical Microscopy

The dye regeneration in dye-sensitized solar cells (DSSCs) is improved by optimizing the charge separation at the level of the sensitized semiconductor treatment of the mesoporous electrode by TiCl4 that passivates the surface for back electron transfer reactions. The dye-regeneration kinetics is analyzed for DN216- and D358-sensitized porous TiO2 electrodes with and without a TiCl4 treatment by means of scanning electrochemical microscopy (SECM). Different mass transport limitation of the [Co(bpy)3]3+ mediator through the porous electrode is found for the comparison of the structurally similar dyes but cannot be detected for the thin layer introduced by the TiCl4 treatment. Phototransient measurements are conducted directly in the SECM cell without any intermediated sample manipulation. The results from those measurements corroborate the findings from steady state SECM measurements.

Kinetics of dye regeneration in liquid electrolyte unveils efficiency of 10.5% in dye-sensitized solar cells

2018 ◽  
Vol 6 (42) ◽  
pp. 11444-11456 ◽  
Author(s):  
Jonnadula Venkata Suman Krishna ◽  
Narra Vamsi Krishna ◽  
Towhid H. Chowdhury ◽  
Suryaprakash Singh ◽  
Idriss Bedja ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Liquid Electrolyte ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Dye Regeneration ◽  
Sensitized Solar Cells ◽  
Kinetics Of

We have designed and synthesised four novel porphyrin sensitizers for dye-sensitized solar cell applications and shown power conversion efficiency of 10.5%.

Using Scanning Electrochemical Microscopy to Examine Copper(I) Sensitizers for Dye-Sensitized Solar Cells

2014 ◽  
Vol 118 (30) ◽  
pp. 16912-16918 ◽  
Author(s):  
Colin J. Martin ◽  
Biljana Bozic-Weber ◽  
Edwin C. Constable ◽  
Thilo Glatzel ◽  
Catherine E. Housecroft ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Scanning Electrochemical Microscopy ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Electrochemical Microscopy

Ultrafast and slow charge recombination dynamics of diketopyrrolopyrrole–NiO dye sensitized solar cells

2016 ◽  
Vol 18 (27) ◽  
pp. 18515-18527 ◽  
Author(s):  
Lei Zhang ◽  
Ludovic Favereau ◽  
Yoann Farré ◽  
Edgar Mijangos ◽  
Yann Pellegrin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Hole Injection ◽  
Dye Sensitized ◽  
Dye Regeneration ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells ◽  
Nio Films ◽  
Recombination Dynamics

Ultrafast hole injection from photoexcited diketopyrrolopyrrole-based dyes into mesoporous NiO films was followed by charge recombination that spanned time scales from pico- to microseconds, which was reflected in large variations in dye regeneration and device solar energy conversion efficiencies.

Role of the Triiodide/Iodide Redox Couple in Dye Regeneration in p-Type Dye-Sensitized Solar Cells

Langmuir ◽  
2012 ◽  
Vol 28 (15) ◽  
pp. 6485-6493 ◽  
Author(s):  
Elizabeth A. Gibson ◽  
Loïc Le Pleux ◽  
Jérôme Fortage ◽  
Yann Pellegrin ◽  
Errol Blart ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Redox Couple ◽  
Dye Sensitized ◽  
Dye Regeneration ◽  
P Type ◽  
Sensitized Solar Cells

scholarly journals Development of scanning electrochemical microscopy (SECM) techniques for the optimization of dye sensitized solar cells

2014 ◽  
Vol 119 ◽  
pp. 86-91 ◽  
Author(s):  
Colin J. Martin ◽  
Biljana Bozic-Weber ◽  
Edwin C. Constable ◽  
Thilo Glatzel ◽  
Catherine E. Housecroft ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Scanning Electrochemical Microscopy ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Electrochemical Microscopy
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