Metal-free branched alkyl tetrathienoacene (TTAR)-based sensitizers for high-performance dye-sensitized solar cells

2017 ◽  
Vol 5 (24) ◽  
pp. 12310-12321 ◽  
Author(s):  
Yamuna Ezhumalai ◽  
Byunghong Lee ◽  
Miao-Syuan Fan ◽  
Boris Harutyunyan ◽  
Kumaresan Prabakaran ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Performance ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Metal Free ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

New branched alkyl tetrathienothiophene (TTAR)-based organic sensitizers with power conversion efficiency up to 11%.

A Metal-Free N-Annulated Thienocyclopentaperylene Dye: Power Conversion Efficiency of 12 % for Dye-Sensitized Solar Cells

2015 ◽  
Vol 127 (20) ◽  
pp. 6092-6096 ◽  
Author(s):  
Zhaoyang Yao ◽  
Min Zhang ◽  
Renzhi Li ◽  
Lin Yang ◽  
Yongna Qiao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Metal Free ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Organic Sensitizers Containing Julolidine Moiety for Dye-Sensitized Solar Cells

2008 ◽  
Vol 8 (9) ◽  
pp. 4761-4766 ◽  
Author(s):  
Dong Wook Kim ◽  
Jin Joo Choi ◽  
Man Ku Kang ◽  
Yongku Kang ◽  
Changjin Lee
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Short Circuit ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

We prepared organic sensitizers (S1 and S2) containing julolidine moiety as a donor, phenyl or phenylene thiophene units as a conjugation bridge, and cyano acetic acid as an acceptor for dye sensitized solar cells. S1 exhibited two absorption maxima at 441 nm (ε = 26 200) and 317 nm (ε = 15 500) due to the π–π* transition of the dye molecule. S2 dyes with an additional thiophene unit showed the absorption maximum extended by 18 nm. DSSCs based on S1 dye achieved 2.66% of power conversion efficiency with 8.3 mA cm−2 of short circuit current, 576 mV of open circuit voltage, and 0.56 of fill factor. DSSCs using S2 dye with a longer conjugation attained only 1.48% of power conversion efficiency. The 0.21 V lower driving force for regeneration of the S2 dye compared to the S1 dye is one of the reasons for low conversion efficiency of the S2 dye.

High performance zinc stannate photoanodes in dye sensitized solar cells with cobalt complex mediators

2020 ◽  
Vol 56 (37) ◽  
pp. 5042-5045 ◽  
Author(s):  
Lingling Tao ◽  
Zhe Sun ◽  
Lei Chen ◽  
Mao Liang ◽  
Song Xue
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Performance ◽  
Power Conversion ◽  
Cobalt Complex ◽  
Dye Sensitized Solar Cells ◽  
Zinc Stannate ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The combination of a zinc stannate photoanode and cobalt complex electrolyte in DSCs yields an impressive power conversion efficiency of 8.1%.

Effect of fluorine substitution and position on phenylene spacer in carbazole based organic sensitizers for dye sensitized solar cells

2017 ◽  
Vol 19 (42) ◽  
pp. 28579-28587 ◽  
Author(s):  
Mohammad Adil Afroz ◽  
Keval K. Sonigara ◽  
Telugu Bhim Raju ◽  
Saurabh S. Soni ◽  
Parameswar Krishnan Iyer
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Dyes ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Fluorine Substitution ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

The study on specific positions of fluorine substitution on phenylene spacer in organic dyes illustrated that ortho-substitution resulted in the improved power conversion efficiency of >4%.

Highly Efficient SnO2/MgO Composite Film-Based Dye-Sensitized Solar Cells Sensitized with N719 and D358 Dyes

2014 ◽  
Vol 13 (04) ◽  
pp. 1440006 ◽  
Author(s):  
E. N. Jayaweera ◽  
C. S. K. Ranasinghe ◽  
G. R. A. Kumara ◽  
R. M. G. Rajapakse
Keyword(s):  
Solar Cells ◽  
Composite Film ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Superior Performance ◽  
Metal Free ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

SnO 2/ MgO composite film-based dye-sensitized solar cells (DSCs), sensitized with both N719 dye and metal-free D358 dye, employing [Formula: see text] redox couple-based liquid electrolyte, show superior performance to those sensitized with only D358 dye, and N719 dye. A significant improvement in the power conversion efficiency was attained by co-sensitizing the N719-based DSCs with metal-free D358 dye when compared to those obtained for DSCs with individual dyes. As confirmed by UV-visible absorption spectra, N719 dye adsorption is more prominent than that of D358 dye when sensitizing the SnO 2/ MgO composite film with the two dyes, D358 and N719. However, N719 and D358 dyes, when used alone, are prone to form aggregates on the SnO 2/ MgO composite film, when N719 dye is used together with D358, the latter effectively suppresses the aggregation of N719 dye on the SnO 2/ MgO composite film, thereby enhancing the power conversion efficiency of the DSCs. Hence, the corresponding power conversion efficiency of the SnO 2/ MgO composite film-based DSCs can be significantly improved by sensitizing with both N719 and D358 dyes. The reported power conversion efficiencies for the SnO 2/ MgO composite film-based DSCs, sensitized with, (a) D358 dye, (b) N719 dye, and (c) both N719 dye and D358 dye, are 6.37%, 7.43% and 8.60% respectively, under AM 1.5 illumination.

Effects of various π-conjugated spacers in thiadiazole[3,4-c]pyridine-cored panchromatic organic dyes for dye-sensitized solar cells

2015 ◽  
Vol 3 (6) ◽  
pp. 3103-3112 ◽  
Author(s):  
Yong Hua ◽  
Jian He ◽  
Caishun Zhang ◽  
Chunjiang Qin ◽  
Liyuan Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Structural Optimization ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Dyes ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

A series of thiadiazolo[3,4-c]pyridine-cored organic sensitizers has been prepared for DSSC applications. The structural optimization with π-conjugated spacers enhanced the power conversion efficiency to 6.30% from 2.86%.

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