Energy level engineering of thieno[3,4-b]pyrazine based organic sensitizers for quasi-solid-state dye-sensitized solar cells

2016 ◽  
Vol 4 (9) ◽  
pp. 3342-3355 ◽  
Author(s):  
Jinhong Wu ◽  
Guangfeng Li ◽  
Lu Zhang ◽  
Gang Zhou ◽  
Zhong-Sheng Wang
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Energy Level ◽  
Energy Levels ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

Energy levels of thieno[3,4-b]pyrazine based organic sensitizers have been successfully optimized for efficient quasi-solid-state dye-sensitized solar cells.

Tuning the Energy Level of Organic Sensitizers for High-Performance Dye-Sensitized Solar Cells

2009 ◽  
Vol 113 (7) ◽  
pp. 2966-2973 ◽  
Author(s):  
Mingfei Xu ◽  
Sophie Wenger ◽  
Hari Bala ◽  
Dong Shi ◽  
Renzhi Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
High Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

Highly efficient and stable organic sensitizers with duplex starburst triphenylamine and carbazole donors for liquid and quasi-solid-state dye-sensitized solar cells

2014 ◽  
Vol 2 (24) ◽  
pp. 8988-8994 ◽  
Author(s):  
Li-Lin Tan ◽  
Jian-Feng Huang ◽  
Yong Shen ◽  
Li-Min Xiao ◽  
Jun-Min Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Conversion Efficiencies ◽  
Sensitized Solar Cells ◽  
Organic Sensitizer ◽  
Organic Sensitizers

A starburst organic sensitizer (see picture) has been designed and synthesized, which shows extremely high overall conversion efficiencies of 10.03% in liquid DSSCs and 8.05% in quasi-solid-state DSSCs.

Efficient quasi-solid-state dye-sensitized solar cells based on organic sensitizers containing fluorinated quinoxaline moiety

2014 ◽  
Vol 2 (45) ◽  
pp. 19515-19525 ◽  
Author(s):  
Xiaowei Jia ◽  
Weiyi Zhang ◽  
Xuefeng Lu ◽  
Zhong-Sheng Wang ◽  
Gang Zhou
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

Two organic sensitizers containing fluorinated quinoxaline moiety have been designed and synthesized for efficient quasi-solid-state dye-sensitized solar cells.

Highly Efficient Organic Sensitizers for Solid-State Dye-Sensitized Solar Cells

2009 ◽  
Vol 113 (38) ◽  
pp. 16816-16820 ◽  
Author(s):  
Soo-Jin Moon ◽  
Jun-Ho Yum ◽  
Robin Humphry-Baker ◽  
Karl Martin Karlsson ◽  
Daniel P. Hagberg ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

Benzoporphyrins bearing pyridine or pyridine-N-oxide anchoring groups as sensitizers for dye-sensitized solar cell

2016 ◽  
Vol 20 (01n04) ◽  
pp. 542-555 ◽  
Author(s):  
Benjamin Schmitz ◽  
Bihong Li ◽  
R. G. Waruna Jinadasa ◽  
Shashi B. Lalvani ◽  
Lei L. Kerr ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Conduction Band ◽  
Spectroscopic Data ◽  
Energy Levels ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Oxidation Potentials ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

Novel benzoporphyrins bearing pyridine or pyridine-[Formula: see text]-oxide groups were prepared through a concise method based on a Pd0 catalyzed cascade reaction. These benzoporphyrins were examined as sensitizers for dye-sensitized solar cells. Vicinal pyridine and vicinal pyridine-[Formula: see text]-oxide groups were introduced as new types of anchoring/acceptor groups for dye-sensitized solar cells for the first time. While all the porphyrins showed solar to electricity conversion, benzoporphyrins bearing pyridine-[Formula: see text]-oxide anchoring groups displayed higher conversion efficiency than benzoporphyrins bearing pyridine-anchoring groups.Opp-dibenzoporphyrins display broadened and red-shifted UV-vis absorption and emission bands as compared with those of the monobenzoporphyrins, which arises from the fusion of one more benzene ring and the attachment of two more electron-withdrawing groups to the porphyrin [Formula: see text]-positions. Cyclic voltammetry (CV) data and DFT calculation data obtained for these porphyrins agree well with their UV-vis absorption and fluorescence spectroscopic data. The HOMO energy level derived from the first oxidation potentials indicate that regeneration of the resulting porphyrin radical cation by the redox mediator (I[Formula: see text]/I[Formula: see text] is thermodynamically feasible for all these benzoporphyrin sensitizers (3, 5, 8 and 10). On the other hand, excited state energy levels of these benzoporphyrins calculated from the CV data, the UV-vis and fluorescence spectroscopic data are all slightly lower than the energy level of the conduction band of TiO2, suggesting insufficient driving force for efficient electron injection from the porphyrin excited singlet state to the conduction band of TiO2.

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