Platinum-Free Cathode for Dye-Sensitized Solar Cells Using Poly(3,4-ethylenedioxythiophene) (PEDOT) Formed via Oxidative Molecular Layer Deposition

2015 ◽  
Vol 7 (7) ◽  
pp. 3866-3870 ◽  
Author(s):  
Do Han Kim ◽  
Sarah E. Atanasov ◽  
Paul Lemaire ◽  
Kyoungmi Lee ◽  
Gregory N. Parsons
Keyword(s):  
Solar Cells ◽  
Molecular Layer ◽  
Dye Sensitized Solar Cells ◽  
Molecular Layer Deposition ◽  
Dye Sensitized ◽  
Layer Deposition ◽  
Sensitized Solar Cells

scholarly journals Triazoloisoquinoline-Based/Ruthenium-Hybrid Sensitizer for Efficient Dye-Sensitized Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Che-Lung Lee ◽  
Wen-Hsi Lee ◽  
Cheng-Hsien Yang
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Ruthenium Complex ◽  
Molecular Layer ◽  
Dye Sensitized Solar Cells ◽  
Visible Spectrum ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Triazoloisoquinoline-based organic dyestuffs were synthesized and used in the fabrication of dye-sensitized solar cells (DSSCs). After cosensitization with ruthenium complex, the triazoloisoquinoline-based organic dyestuffs overcame the deficiency of ruthenium dyestuff absorption in the blue part of the visible spectrum. This method also fills the blanks of ruthenium dyestuff sensitized TiO2film and forms a compact insulating molecular layer due to the nature of small molecular organic dyestuffs. The incident photon-to-electron conversion efficiency of N719 at shorter wavelength regions is 49%. After addition of a triazoloisoquinoline-based dyestuff for co-sensitization, the IPCE at 350–500 nm increased significantly. This can be attributed to the increased photocurrent of the cells, which improves the dye-sensitized photoelectric conversion efficiency from 6.23% to 7.84%, and the overall conversion efficiency increased by about 26%. As a consequence, this low molecular weight organic dyestuff is a promising candidate as coadsorbent and cosensitizer for highly efficient dye-sensitized solar cells.

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