Multi‐Length‐Scale Morphologies Driven by Mixed Additives in Porphyrin‐Based Organic Photovoltaics
Abstract
A new category of deep-absorbing small molecules is developed. Optimized devices driven by mixed additives show a remarkable short-circuit current of ≈20 mA cm(-2) and a highest power conversion efficiency of 9.06%. A multi-length-scale morphology is formed, which is fully characterized by resonant soft X-ray scattering, high-angle annular dark film image transmission electron microscopy, etc.
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A champion device based on D6:PC71BM obtained the highest Jsc of 19.58 mA cm−2 and PCE of 9.06%, while the D7:PC71BM device showed a PCE of 8.24%.
“a champion device based on D6 :PC71BM was obtained with the highest J sc of 19.58 mA cm 2 and PCE of 9.06%, but the device based on D7 :PC71BM showed a PCE of 8.24%.”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [90]
For E11-based devices, increasing the D/A weight ratio to 1:1.2 gave an efficiency of 7.70%, compared with 6.11% at 1:1.
“When they increased the D/A weight ratio (1 : 1.2), an e ffi ciency of 7.70% was obtained (6.11% at 1 : 1).”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [90]
Among E9-E11 donors, E11 showed the champion performance due to the unique characteristics of the 10,20-bis(5,15-alkyl) substituent that led to more efficient intermolecular π-π stacking and a smooth surface morphology.
“Of the above discussed E9 -E11 donors, E11 showed the champion performance due to the unique characteristics of the 10,20-bis(5,15-alkyl) substituent that led to more e ffi cient intermolecular p -p stacking and a smooth surface morphology.”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [90]
E9-E11/PC71BM blends showed RMS roughness values of 0.852, 0.780, and 0.567 nm, respectively.
“E9 -E11 /PC71BM showed roughness values of 0.852, 0.780 and 0.567 nm, respectively.”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [90]
The lower EQE and Jsc of E9- and E10-based devices are consistent with the weaker absorptions of E9 and E10 compared to E11.
“This behavior is consistent with the weaker absorptions of E9 and E10 as compared to that of E11 .”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [90]
When the E11-based device was stored in air for 30 days, 83% of the original PCE value was retained.
“Even when the device was stored in air for 30 days, 83% of the original value was retained.”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [90]
The EQE values of devices based on E9 or E10 are below 50% in the range of 620-800 nm, resulting in lower Jsc values.
“The EQE values of the devices based on E9 or E10 are below 50% in the range of 620 -800 nm, resulting in lower J sc values.”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [90]
For BHJ OSCs using E9-E11 as donors, PC71BM as acceptor gave higher PCEs than PC61BM (E9: 3.21% vs 1.42%; E10: 5.07% vs 4.55%; E11: 5.20% vs 4.98%).
“All donors showed higher e ffi ciencies with PC71BM (3.21% for E9 , 5.07% for E10 , and 5.20% for E11 vs. 1.42% for E9 , 4.55% for E10 , and 4.98% for E11 , respectively).”
From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [90]
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Solution-processed organic tandem solar cells with power conversion efficiencies >12%
Li, M., Gao, K., Wan, X., Zhang, Q., Kan, B., Xia, R., Liu, F., Yang, X., Feng, H., Ni, W., et al. (2017) · Nature Photonics · doi:10.1038/nphoton.2016.240 · Cited by 548 · see citing works
Self-citationRecent progress in porphyrin-based materials for organic solar cells
Mahmood, A., Hu, J.-Y., Xiao, B., Tang, A., Wang, X., & Zhou, E. (2018) · Journal of Materials Chemistry A · doi:10.1039/c8ta06392c · Cited by 311 · see citing works
Arrechea, S., Aljarilla, A., de la Cruz, P., Palomares, E., Sharma, G. D., & Langa, F. (2016) · Nanoscale · doi:10.1039/c6nr06374h · Cited by 27 · see citing works
- Authors
- Gao, K., Miao, J., Xiao, L., Deng, W., Kan, Y., Liang, T., Wang, C., Huang, F., Peng, J., Cao, Y., Liu, F., Russell, T. P., Wu, H., & Peng, X.
- Affiliations
- State Key Laboratory of Luminescent Materials and Devices (CN)
- Lawrence Berkeley National Laboratory (US)
- Corresponding author
- Liu, Feng
- Russell, Thomas P.
- Wu, Hongbin
- Peng, Xiaobin
- ORCID
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2016-04-09
- Volume
- 28
- Issue
- 23
- Pages
- 4727-4733
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2318784685
- Cited by
- 265
- References
- 0
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 5 · 2023: 11 · 2022: 31 · 2021: 32 · 2020: 39 · 2019: 51 · 2018: 32 · 2017: 45 · 2016: 11
- FWCI
- 21.34
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Advanced Materials (publishedVersion)
- PubMed (publishedVersion)
- Funders
- International Science & Technology Cooperation Program of China (2013DFG52740, 2010DFA52150)
- Ministry of Science and Technology (2014CB643500)
- National Natural Science Foundation of China (51473053, 51073060)
- U.S. Office of Naval Research (N00014-15-1-2244)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
- Physical Sciences › Materials Science › Materials Chemistry › Porphyrin and Phthalocyanine Chemistry
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
- Keywords
- organic solar cells, short-circuit current density, power conversion efficiency, resonant soft X-ray scattering
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