A New Series of EDOT Based Co-Sensitizers for Enhanced Efficiency of Cocktail DSSC: A Comparative Study of Two Different Anchoring Groups
Abstract
:1. Introduction
2. Experimental Section
2.1. General
2.2. Solar Cell Fabrication and Photovoltaic Characterization
2.3. Procedures for the Synthesis of CSGR Dyes
3. Results and Discussion
3.1. Synthesis
3.2. Optical and Electrochemical Measurements
3.3. Computational Studies
3.4. Photovoltaic Properties
3.5. Dye Loading Analysis
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Sample Availability: Samples of the compounds are available upon request |
Dye | λmax (Solution) (nm) a | Ε (M−1 Cm−1) | λmax (TiO2) (nm) b | λem (nm) c | Stokes Shif (nm) | E0X (V) d | E0-0 (V) e | E0X* (V) f | HOMO (eV) g | LUMO (eV) h |
---|---|---|---|---|---|---|---|---|---|---|
CSGR1 | 402 | 41182 | 415 | 526 | 101 | 0.773 | 2.56 | −1.787 | 5.473 | −2.913 |
CSGR2 | 408 | 43904 | 437 | 533 | 114 | 0.829 | 2.53 | −1.701 | 5.529 | −2.993 |
CSGR3 | 376 | 33557 | 389 | 478 | 85 | 0.789 | 2.81 | −2.021 | 5.489 | −2.679 |
CSGR4 | 450 | 47688 | 436 | 528 | 92 | 0.793 | 2.55 | −1.757 | 5.493 | −2.943 |
CSGR5 | 482 | 49522 | 471 | 574 | 78 | 0.785 | 2.33 | −1.545 | 5.485 | |
N749 | 623 | 8725 | 618 |
Dye | JSC (mA cm−2) | VOC (V) | FF | η (%) |
---|---|---|---|---|
N749 | 14.73 | 0.648 | 64.74 | 6.18 |
14.32 + 0.41 | 0.637 + 0.008 | 64.08 + 0.55 | 5.84 + 0.13 | |
N749 + CSGR1 | 18.51 | 0.659 | 65.18 | 7.95 |
17.84 + 0.58 | 0.641 + 0.010 | 66.802 + 1.24 | 7.62 + 0.19 | |
N749 + CSGR2 | 18.55 | 0.674 | 67.08 | 8.40 |
18.34 + 0.44 | 0.659 + 0.009 | 66.90 + 0,74 | 8.07 + 0.12 | |
N749 + CSGR3 | 18.15 | 0.658 | 65.42 | 7.81 |
17.51 + 0.41 | 0.648 + 0.008 | 65.27 + 1.04 | 7.39 + 0.13 | |
N749 + CSGR4 | 15.72 | 0.634 | 65.83 | 6.56 |
15.10 + 0.45 | 0.632 + 0.005 | 65.95 + 0.90 | 6.29 + 0.22 | |
N749 + CSGR5 | 16.59 | 0.651 | 64.68 | 6.99 |
15.99 + 0.53 | 0.647 + 0.010 | 64.18 + 1.05 | 6.66 + 0.22 |
Dye | R1 | R2 | R3 | Ʈe (ms) |
---|---|---|---|---|
N749 + CSGR1 | 7.138 | 3.165 | 19.38 | 4.46 |
N749 + CSGR2 | 6.785 | 3.197 | 20.37 | 4.75 |
N749 + CSGR3 | 6.763 | 3.328 | 15.28 | 3.89 |
N749 + CSGR4 | 7.124 | 3.439 | 12.6 | 2.43 |
N749 + CSGR5 | 6.393 | 3.538 | 15.64 | 3.08 |
N749 | 7.139 | 3.206 | 11.72 | 2.17 |
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Koyyada, G.; Kumar Chitumalla, R.; Thogiti, S.; Kim, J.H.; Jang, J.; Chandrasekharam, M.; Jung, J.H. A New Series of EDOT Based Co-Sensitizers for Enhanced Efficiency of Cocktail DSSC: A Comparative Study of Two Different Anchoring Groups. Molecules 2019, 24, 3554. https://doi.org/10.3390/molecules24193554
Koyyada G, Kumar Chitumalla R, Thogiti S, Kim JH, Jang J, Chandrasekharam M, Jung JH. A New Series of EDOT Based Co-Sensitizers for Enhanced Efficiency of Cocktail DSSC: A Comparative Study of Two Different Anchoring Groups. Molecules. 2019; 24(19):3554. https://doi.org/10.3390/molecules24193554
Chicago/Turabian StyleKoyyada, Ganesh, Ramesh Kumar Chitumalla, Suresh Thogiti, Jae Hong Kim, Joonkyung Jang, Malapaka Chandrasekharam, and Jae Hak Jung. 2019. "A New Series of EDOT Based Co-Sensitizers for Enhanced Efficiency of Cocktail DSSC: A Comparative Study of Two Different Anchoring Groups" Molecules 24, no. 19: 3554. https://doi.org/10.3390/molecules24193554