Effect of π-Conjugated Spacer in N-Alkylphenoxazine-Based Sensitizers Containing Double Anchors for Dye-Sensitized Solar Cells
Abstract
:1. Introduction
2. Materials and Methods
2.1. General Method
2.2. Fabrication of DSSCs
2.3. Quantum Chemistry Computation
2.4. Synthesis
3. Result and Discussion
3.1. Synthesis
3.2. Optical Properties
3.3. Electrochemical Properties
3.4. Photovoltaic Properties
3.5. Electrochemical Impedance Spectroscopy Analysis
3.6. Computational Calculation
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Dye | λabs, nm (ε, M−1cm−1) a | λem nm a | Eox b (V vs. NHE) | E0-0 c eV | E0-0* d (V vs. NHE) | HOMO/LUMO(eV) |
---|---|---|---|---|---|---|
DP-1 | 524 (16,862) | 636 | 1.02 | 2.12 | −1.10 | 5.42/3.30 |
DP-2 | 526 (41,950) | 653 | 1.01 | 2.10 | −1.09 | 5.41/3.31 |
DP-3 | 528 (47,760) | 647 | 1.00 | 2.09 | −1.09 | 5.40/3.31 |
Dye | VOC (V) | JSC (mA/cm2) | η (%) | FF |
---|---|---|---|---|
DP-1 | 0.64 | 3.31 | 1.53 | 0.72 |
DP-2 | 0.68 | 8.14 | 3.80 | 0.69 |
DP-3 | 0.68 | 5.62 | 2.92 | 0.76 |
DP-1 +10 mMCDCA | 0.65 | 3.64 | 1.80 | 0.76 |
DP-2 +10 mMCDCA | 0.69 | 8.52 | 3.96 | 0.67 |
DP-3 + 10 mMCDCA | 0.68 | 6.23 | 3.10 | 0.74 |
N719 | 0.72 | 15.36 | 7.38 | 0.67 |
Dye | State | Excitation b | λcal, eV | fc | ∆(Mulliken charge), d |e| | f × ∆q | Dye | State | Excitation b | λcal, eV | fc | ∆(Mulliken charge), d |e| | f × ∆q |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GF1 | S1 | H → L (99%) | 2.19 | 0.34 | Ac: −0.19 | −0.13 | GF2 | S1 | H → L (99%) | 2.21 | 0.57 | Ac: −0.19 | −0.20 |
F: −0.09 | T: −0.14 | ||||||||||||
Poz: 0.56 | Poz: 0.61 | ||||||||||||
F’: −0.09 | T’: −0.12 | ||||||||||||
Ac’: −0.19 | Ac’: −0.17 | ||||||||||||
S2 | H → L1 (95%) | 2.47 | 0.20 | Ac: −0.23 | −0.09 | S2 | H → L1 (97%) | 2.47 | 0.20 | Ac: −0.20 | −0.08 | ||
F: −0.09 | T: −0.12 | ||||||||||||
Poz: 0.64 | Poz: 0.68 | ||||||||||||
F’: −0.09 | T’: −0.14 | ||||||||||||
Ac’: −0.23 | Ac’: −0.22 | ||||||||||||
S3 | H2 → L1 (6%)H1 → L (91%) | 3.23 | 0.62 | Ac: −0.12 | −0.15 | S3 | H1 → L (95%) | 3.27 | 0.54 | Ac: −0.11 | −0.09 | ||
F: 0.05 | T: 0.01 | ||||||||||||
Poz: 0.14 | Poz: 0.11 | ||||||||||||
F’: 0.05 | T’: 0.05 | ||||||||||||
Ac’: −0.12 | Ac’: −0.06 | ||||||||||||
GF3 | S1 | H → L (99%) | 2.20 | 0.58 | Ac: −0.18 | −0.20 | |||||||
T1: −0.14 | |||||||||||||
Poz: 0.59 | |||||||||||||
T1′: −0.12 | |||||||||||||
Ac’: −0.16 | |||||||||||||
S2 | H → L1 (96%) | 2.46 | 0.19 | Ac: −0.19 | −0.07 | ||||||||
T1: −0.12 | |||||||||||||
Poz: 0.66 | |||||||||||||
T1′: −0.14 | |||||||||||||
Ac’: −0.21 | |||||||||||||
S3 | H1 → L (94%) | 3.19 | 0.56 | Ac: −0.10 | −0.08 | ||||||||
T1: 0.01 | |||||||||||||
Poz: 0.09 | |||||||||||||
T1′: 0.05 | |||||||||||||
Ac’: −0.05 |
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Yen, Y.-S.; Indumathi, V. Effect of π-Conjugated Spacer in N-Alkylphenoxazine-Based Sensitizers Containing Double Anchors for Dye-Sensitized Solar Cells. Polymers 2021, 13, 1304. https://doi.org/10.3390/polym13081304
Yen Y-S, Indumathi V. Effect of π-Conjugated Spacer in N-Alkylphenoxazine-Based Sensitizers Containing Double Anchors for Dye-Sensitized Solar Cells. Polymers. 2021; 13(8):1304. https://doi.org/10.3390/polym13081304
Chicago/Turabian StyleYen, Yung-Sheng, and Velu Indumathi. 2021. "Effect of π-Conjugated Spacer in N-Alkylphenoxazine-Based Sensitizers Containing Double Anchors for Dye-Sensitized Solar Cells" Polymers 13, no. 8: 1304. https://doi.org/10.3390/polym13081304