A comparative study of Ru(ii) cyclometallated complexes versus thiocyanated heteroleptic complexes: thermodynamic force for efficient dye regeneration in dye-sensitized solar cells and how low could it be?

2014 ◽  
Vol 16 (28) ◽  
pp. 14874-14881 ◽  
Author(s):  
Maqbool Hussain ◽  
Ashraful Islam ◽  
Idriss Bedja ◽  
Ravindra Kumar Gupta ◽  
Liyuan Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Comparative Study ◽  
Driving Force ◽  
Dye Sensitized Solar Cells ◽  
Thermodynamic Force ◽  
Dye Sensitized ◽  
Heteroleptic Complexes ◽  
Dye Regeneration ◽  
Cyclometallated Complexes ◽  
Sensitized Solar Cells

Although cyclometallation may produce significantly better light harvesting, a driving force <0.25 eV is not sufficient for effective dye regeneration in DSSCs.

Efficient dye regeneration at low driving force achieved in triphenylamine dye LEG4 and TEMPO redox mediator based dye-sensitized solar cells

2015 ◽  
Vol 17 (24) ◽  
pp. 15868-15875 ◽  
Author(s):  
Wenxing Yang ◽  
Nick Vlachopoulos ◽  
Yan Hao ◽  
Anders Hagfeldt ◽  
Gerrit Boschloo
Keyword(s):  
Solar Cells ◽  
Driving Force ◽  
Open Circuit Voltage ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Redox Mediator ◽  
Redox Mediators ◽  
Dye Sensitized ◽  
Dye Regeneration ◽  
Sensitized Solar Cells

Minimizing the driving force required for the regeneration of oxidized dyes using redox mediators in an electrolyte is essential to further improve the open-circuit voltage and efficiency of dye-sensitized solar cells (DSSCs).

scholarly journals Insight into quinoxaline containing D–π–A dyes for dye-sensitized solar cells with cobalt and iodine based electrolytes: the effect of π-bridge on the HOMO energy level and photovoltaic performance

2015 ◽  
Vol 3 (43) ◽  
pp. 21733-21743 ◽  
Author(s):  
Xing Li ◽  
Yue Hu ◽  
Irene Sanchez-Molina ◽  
Ying Zhou ◽  
Fengtao Yu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Driving Force ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Spectral Absorption ◽  
Dye Sensitized ◽  
Dye Regeneration ◽  
Sensitized Solar Cells ◽  
Insight Into ◽  
Homo Energy Level

Maintaining a balance between the spectral absorption range and driving force for dye regeneration is the key to increase the photovoltaic performance of dye-sensitized solar cells.

Investigation of the minimum driving force for dye regeneration utilizing model squaraine dyes for dye-sensitized solar cells

2017 ◽  
Vol 5 (43) ◽  
pp. 22672-22682 ◽  
Author(s):  
Anusha Pradhan ◽  
Takuya Morimoto ◽  
Maryala Saikiran ◽  
Gaurav Kapil ◽  
Shuzi Hayase ◽  
...  
Keyword(s):  
Solar Cells ◽  
Driving Force ◽  
Dye Sensitized Solar Cells ◽  
Squaraine Dyes ◽  
Dye Sensitized ◽  
Experimental Approaches ◽  
Dye Regeneration ◽  
Sensitized Solar Cells

Combined theoretical and experimental approaches using model squaraine dyes as a representative of NIR sensitizers have demonstrated the possibility for facile dye regeneration, with a very small driving force of 0.12 eV, from the most commonly used iodine based redox electrolytes.

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%.

A polymer and graphene layer to increase dye regeneration and suppress back electron transfer in dye sensitized solar cells

2017 ◽  
Vol 53 (49) ◽  
pp. 6629-6632 ◽  
Author(s):  
Vediappan Sudhakar ◽  
Arulraj Arulkashmir ◽  
Kothandam Krishnamoorthy
Keyword(s):  
Electron Transfer ◽  
Solar Cells ◽  
Graphene Layer ◽  
Dye Sensitized Solar Cells ◽  
Blocking Layer ◽  
Dye Sensitized ◽  
Back Electron Transfer ◽  
Dye Regeneration ◽  
Sensitized Solar Cells

A polymer–graphene blocking layer decreases back electron transfer and increases dye regeneration that improved the DSSC efficiency to 10.4%.

scholarly journals Fused Thiazine Tethered Metal-Free Dyes for Dye Sensitized Solar Cells: A Computational Investigation

2021 ◽  
Vol 33 (10) ◽  
pp. 2373-2378
Author(s):  
K. Gokula Krishnan ◽  
V. Saravanan ◽  
C. Udhaya Kumar ◽  
C. Ramalingan
Keyword(s):  
Solar Cells ◽  
Driving Forces ◽  
Dye Sensitized Solar Cells ◽  
Computational Studies ◽  
Computational Investigation ◽  
Dye Sensitized ◽  
B3lyp Method ◽  
Harvesting Efficiency ◽  
Dye Regeneration ◽  
Sensitized Solar Cells

Three novel cyanoacetamide decorated phenothiazines (1a-c) have been designed. Structural and photo-physical properties of the molecules 1a-c have been investigated. To better realize the charge transport process involved in the dye-sensitized solar cells (DSSCs), computational studies have been performed using B3LYP and CAM-B3LYP method for the dyes 1a-c. Theoretical findings for DSSCs include LHE (light-harvesting efficiency) and driving forces such as electron injection (ΔGinject) and dye regeneration have been calculated to envisage the most appropriate dyes for the application of DSSC.

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