N-fused carbazole–zinc porphyrin–free-base porphyrin triad for efficient near-IR dye-sensitized solar cells

2011 ◽  
Vol 47 (13) ◽  
pp. 4010 ◽  
Author(s):  
Yizhu Liu ◽  
Hong Lin ◽  
Joanne Ting Dy ◽  
Koichi Tamaki ◽  
Jotaro Nakazaki ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Free Base ◽  
Zinc Porphyrin ◽  
Dye Sensitized ◽  
Near Ir ◽  
Sensitized Solar Cells

Co-sensitization of free-base and zinc porphyrins: An effective approach to improve the photon-to-current conversion efficiency of dye-sensitized solar cells

2015 ◽  
Vol 19 (05) ◽  
pp. 695-707 ◽  
Author(s):  
Sandeep B. Mane ◽  
Liyang Luo ◽  
Hsin-Han Tsai ◽  
Chen-Hsiung Hung
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Density Functional ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Free Base ◽  
Zinc Porphyrin ◽  
Dye Sensitized ◽  
Zinc Porphyrins ◽  
Sensitized Solar Cells

Co-sensitization of two or more sensitizers with complementary absorption profiles had been utilized as an imperative tool to achieve panchromatic sensitization in dye-sensitized solar cells. The highly efficient dye-sensitized solar cells consist of a co-sensitization system comprising of a mixture of porphyrin and organic dye. We have prepared four novel free-base and zinc porphyrins in minimum steps and examined their individual as well as co-sensitized performance in dye-sensitized solar cells. The UV-visible spectrum suggests that upon zinc insertion the absorption wavelength is red-shifted by 10 nm in both Soret and Q-band region. The density functional theory (DFT) calculations revealed that the presence of an electron withdrawing cyanoacrylic acid as the anchoring group has pronounced effect on the charge distribution. IPCE spectra suggest that the co-sensitization of a free-base porphyrin with a zinc porphyrin resulted in panchromatic absorption in whole visible region. The device made with Mix-2, which is composed from the free-base porphyrin N4CN and the zinc porphyrin N4ZnCN gave the best performance with an overall photon-to-current conversion efficiency of 4.18%, with Jsc of 10.4 mA.cm-2, Voc of 0.56 V and fill factor of 72%.

Porphyrin-rhodanine dyads for dye sensitized solar cells

2006 ◽  
Vol 10 (08) ◽  
pp. 1007-1016 ◽  
Author(s):  
Lingamallu Giribabu ◽  
Ch. Vijay Kumar ◽  
P. Yella Reddy
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Acid Group ◽  
Redox Potentials ◽  
Free Base ◽  
Zinc Porphyrin ◽  
H Nmr ◽  
Dye Sensitized ◽  
Uv Visible ◽  
Sensitized Solar Cells

A series of four new porphyrin-rhodanine dyads were synthesized having the rhodanine acetic acid group either at the meso- or the pyrrole-β position of a free-base/zinc porphyrin. These dyads were fully characterized by UV-visible, 1 H NMR, MALDI-MS and fluorescence spectroscopies and cyclic voltammetry. Both the Soret and Q-bands were red-shifted in the case of pyrrole-β substituted dyads. The redox potentials of all four dyads were altered in comparison with their individual constituents. The dyads were tested in dye sensitized solar cells and the zinc metalated dyads gave a better performance in comparison with the corresponding free-base dyads.

Novel Zinc Porphyrin Sensitizers for Dye-Sensitized Solar Cells: Synthesis and Spectral, Electrochemical, and Photovoltaic Properties

2009 ◽  
Vol 15 (6) ◽  
pp. 1403-1412 ◽  
Author(s):  
Cheng-Wei Lee ◽  
Hsueh-Pei Lu ◽  
Chi-Ming Lan ◽  
Yi-Lin Huang ◽  
You-Ren Liang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Photovoltaic Properties ◽  
Zinc Porphyrin ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Computational Investigation of Acene-Modified Zinc-Porphyrin Based Sensitizers for Dye-Sensitized Solar Cells

2015 ◽  
Vol 119 (16) ◽  
pp. 8417-8430 ◽  
Author(s):  
Yan Fang Liu ◽  
Jing Guan ◽  
Deping Hu ◽  
Likai Du ◽  
Hao Sun ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Computational Investigation ◽  
Zinc Porphyrin ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Near-IR organic sensitizers containing squaraine and phenothiazine units for dye-sensitized solar cells

2015 ◽  
Vol 113 ◽  
pp. 18-26 ◽  
Author(s):  
Seong Hee Bae ◽  
Kang Deuk Seo ◽  
Won Seok Choi ◽  
Ji Yeoun Hong ◽  
Hwan Kyu Kim
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Near Ir ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers
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