Citation: Yang Xu, Liang-Sheng Qiang, Yu-Lin Yang, Li-Guo Wei, Ping Wang, Rui-Qing Fan. Enhanced performance of ruthenium dye-sensitized solar cell by employing an organic co-adsorbent of N,N'-bis((pyridin-2-yl)(methyl) methylene)-o-phenylenediamine[J]. Chinese Chemical Letters, ;2016, 27(01): 127-134. doi: 10.1016/j.cclet.2015.06.010 shu

Enhanced performance of ruthenium dye-sensitized solar cell by employing an organic co-adsorbent of N,N'-bis((pyridin-2-yl)(methyl) methylene)-o-phenylenediamine

Yang Xu ^a ,
Liang-Sheng Qiang ^a ,
Yu-Lin Yang ^a,, ,
Li-Guo Wei ^a,b ,
Ping Wang ^a ,
Rui-Qing Fan ^a,,

1.
a Department of Chemistry, Harbin Institute of Technology, Harbin 150001, China;
2.
b College of Environmental and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China

Corresponding author: Yu-Lin Yang, Rui-Qing Fan,
Received Date: 14 April 2015
Available Online: 31 May 2015
Fund Project: and the Fundamental Research Funds for the Central Universities(No. HIT. IBRSEM. A201409) (973 Program, No. 2013CB632900)

A pyridine-anchor co-adsorbent of N,N'-bis((pyridin-2-yl)(methyl) methylene)-o-phenylenediamine(named BPPI) is prepared and employed as co-adsorbent in dye-sensitized solar cells(DSSCs). The prepared co-adsorbent could overcome the deficiency of N719 absorption in the low wavelength region of visible spectrum, offset competitive visible light absorption of I₃^-, enhance the spectral responses of the co-adsorbed TiO₂ film in region from 300 nm to 750 nm, suppress charge recombination, prolong electron lifetime, and decrease the total resistance of DSSCs. The optimized cell device co-sensitized by BPPI/N719 dye gives a short circuit current density of 12.98 mA cm^-2, an open circuit voltage of 0.73 V, and a fill factor of 0.66 corresponding to an overall conversion efficiency of 6.22% under standard global AM 1.5 solar irradiation, which is much higher than that of device solely sensitized by N719(5.29%) under the same conditions. Mechanistic investigations are carried out by various spectral and electrochemical characterizations.
- Dye-sensitized solar cells,
- Co-adsorbent,
- Enhanced performance,
- Co-sensitization
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