Importance of fluorescence lifetimes for efficient indoline dyes in dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 57721-57724 ◽  
Author(s):  
M. Matsui ◽  
R. Aoki ◽  
D. Nishiwaki ◽  
Y. Kubota ◽  
K. Funabiki ◽  
...  
Keyword(s):  
Solar Cells ◽  
Molecular Design ◽  
Dye Sensitized Solar Cells ◽  
Fluorescence Lifetimes ◽  
Absorption Bands ◽  
Dye Sensitized ◽  
Homo And Lumo ◽  
Sensitized Solar Cells

To make a molecular design of efficient indoline dyes, fluorescence lifetimes should be longer than ca. 0.8 ns in chloroform, in addition to suitable HOMO and LUMO levels and bathochromic UV-vis absorption bands.

A2 and A2B2 Benzoporphyrins as sensitizers for dye-sensitized solar cells

2019 ◽  
Vol 23 (04n05) ◽  
pp. 599-610 ◽  
Author(s):  
Siddhartha Kumar ◽  
Whitney Webre ◽  
Jacob Schaffner ◽  
Sheikh M. S. Islam ◽  
Francis D’Souza ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Dye Sensitized Solar Cells ◽  
Acid Group ◽  
Dye Sensitized ◽  
Dye Loading ◽  
Two Factors ◽  
Homo And Lumo ◽  
Anchoring Group ◽  
Sensitized Solar Cells

The first example of A2B2 tetrabenzoporphyrin (KW-4) was synthesized, characterized and evaluated as a sensitizer for dye-sensitized solar cells. UV-vis and fluorescence spectroscopy revealed red-shifted and broadened absorption spectra of A2B2 tetrabenzoporphyrin as compared with its A2 dibenzo- and A2B2 dibenzoporphyrin analogues, which is a desired feature of dyes for dye-sensitized solar cells. DFT calculations also indicate favorable electron density distribution on the HOMO and LUMO of KW-4. However, the power conversion efficiency of the solar cell based on tetrabenzoporphyrin KW-4 displayed inferior performance than that of the solar cell based on A2 dibenzoporphyrin KW-2. The lower performance of the KW-4 cell was ascribed to two factors: the low lying LUMO energy level leading to less efficient electron injection and the “flat geometry” of the dye on TiO2surface facilitating charge recombination and decreasing dye loading. The investigation of anchoring group effect suggests that the acrylic acid group is a better anchoring group than pentadienyl carboxylic acid.

Heterocyclic-Functionalized Organic Dyes for Dye-Sensitized Solar Cells: Tuning Solar Cell Performance by Structural Modification

2012 ◽  
Vol 65 (9) ◽  
pp. 1203 ◽  
Author(s):  
Qianqian Li ◽  
Zhongxing Jiang ◽  
Jingui Qin ◽  
Zhen Li
Keyword(s):  
Solar Cells ◽  
Molecular Design ◽  
Organic Dyes ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Solar Cell Performance ◽  
Dye Sensitized ◽  
The Relationship ◽  
Sensitized Solar Cells

Due to their high conversion efficiency and low cost of production, dye-sensitized solar cells based on organic dyes have attracted considerable attention. By utilizing various heterocycles as construction blocks for organic dyes, the performance of solar cells was optimized to exhibit good light-harvesting features and suppress interfacial recombinations. The aim of this review is to highlight recent progress in the molecular design of heterocyclic-functionalized organic dyes for efficient dye-sensitized solar cells, and special attention has been paid to the relationship between chemical structure and the photovoltaic performance of dye-sensitized solar cells based on these dyes.

Molecular design of new organic sensitizers based on thieno[1,4]benzothiazine for dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 56865-56871 ◽  
Author(s):  
Hu Liu ◽  
Xingrong Liao ◽  
Xiaoyu Li ◽  
Di Wu ◽  
Qiang Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Molecular Design ◽  
Dye Sensitized Solar Cells ◽  
Metal Free ◽  
Dye Sensitized ◽  
First Time ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

A novel thieno[1,4]benzothiazine donor has been developed for the first time to construct metal-free organic sensitizers, which exhibit more dramatically red-shifted absorptions than phenothiazine-based dyes.

scholarly journals Molecular design and synthesis of ruthenium(ii) sensitizers for highly efficient dye-sensitized solar cells

2011 ◽  
Vol 21 (33) ◽  
pp. 12389 ◽  
Author(s):  
A. Anthonysamy ◽  
Y. Lee ◽  
B. Karunagaran ◽  
V. Ganapathy ◽  
S.-W. Rhee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Molecular Design ◽  
Dye Sensitized Solar Cells ◽  
Design And Synthesis ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Sensitized Solar Cells
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