Photophysical Study of Polymer-Based Solar Cells with an Organo-Boron Molecule in the Active Layer
Abstract
:1. Introduction
2. Results and Discussion
2.1. Characterization of Solar Cells Devices
Polymer | Soluble yield (%) | Monomer ratio a | Molecular weight | Configuration | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Diads (%) | Triads (%) | |||||||||
(g/mol) | HT | HH | HT-HT | TT-HT | HT-HH | TT-HH | ||||
P1 | 79 | 1.4/98.6 | 12,600 | 80,000 | 76 | 24 | 58 | 14 | 21 | 8 |
P2 | 63 | 5/95 | 24,600 | 236,000 | 67 | 33 | 43 | 18 | 20 | 19 |
P3 | 32 | 26/74 | 16,800 | 106,000 | 64 | 36 | 43 | 18 | 19 | 20 |
P4 | 15 | 12/88 | 11,000 | 117,000 | 68 | 32 | 50 | 15 | 18 | 17 |
Components (weight ration) | η (%) |
---|---|
P1:PC61BM (1:2) | 0.17 |
P1:PC61BM:M1 (1:2:1) | 0.39 |
P2:PC61BM (1:2) | 0.15 |
P2:PC61BM:M1 (1:2:1) | 0.41 |
P3:PC61BM (1:2) | 0.14 |
P3:PC61BM:M1 (1:2:1) | 0.18 |
P4:PC61BM (1:2) | 0.02 |
P4:PC61BM:M1 (1:2:1) | 0.04 |
2.2. Photophysical Studies of OPVs’ Active Layers
Electrochemical | P1 | M1 | PC61BM |
---|---|---|---|
LUMO (eV) | −3.54 | −3.66 | −3.7 |
HOMO (eV) | −5.55 | −5.22 | −6.1 |
GAP (eV) | 2.01 | 1.56 | 2.4 |
Probe Wavelength (nm) | Time Constants of biexpontial decay | |||
---|---|---|---|---|
P1:PC61BM | P1:PC61BM:M1 | |||
Short τ1 (ps) | Long τ2 (ns) | Short τ1 (ps) | Long τ2 (ns) | |
650 | 17 | 0.36 | 47 | 2.31 |
735 | 12 | 0.45 | 86 | 2.26 |
900 | 4 | 1.25 | 0.92 | 0.212 |
3. Experimental Section
3.1. Polythiophene Derivatives
3.2. Sample Preparation
3.3. Steady-State and Transient Absorption Experiments
4. Conclusions
Supplementary Materials
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Romero-Servin, S.; Villa, M.D.A.; Carriles, R.; Ramos-Ortíz, G.; Maldonado, J.-L.; Rodríguez, M.; Güizado-Rodríguez, M. Photophysical Study of Polymer-Based Solar Cells with an Organo-Boron Molecule in the Active Layer. Materials 2015, 8, 4258-4272. https://doi.org/10.3390/ma8074258
Romero-Servin S, Villa MDA, Carriles R, Ramos-Ortíz G, Maldonado J-L, Rodríguez M, Güizado-Rodríguez M. Photophysical Study of Polymer-Based Solar Cells with an Organo-Boron Molecule in the Active Layer. Materials. 2015; 8(7):4258-4272. https://doi.org/10.3390/ma8074258
Chicago/Turabian StyleRomero-Servin, Sergio, Manuel De Anda Villa, R. Carriles, Gabriel Ramos-Ortíz, José-Luis Maldonado, Mario Rodríguez, and M. Güizado-Rodríguez. 2015. "Photophysical Study of Polymer-Based Solar Cells with an Organo-Boron Molecule in the Active Layer" Materials 8, no. 7: 4258-4272. https://doi.org/10.3390/ma8074258