Photoactive Blend Morphology Engineering through Systematically Tuning Aggregation in All‐Polymer Solar Cells
Abstract
Abstract Polymer aggregation plays a critical role in the miscibility of materials and the performance of all‐polymer solar cells (APSCs). However, many aspects of how polymer texturing and aggregation affect photoactive blend film microstructure and photovoltaic performance are poorly understood. Here the effects of aggregation in donor–acceptor blends are studied, in which the number‐average molecular weights ( M n s) of both an amorphous donor polymer, poly[4,8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)benzo[1,2‐ b ;4,5‐ b′ ]dithiophene‐2,6‐diyl‐alt‐(4‐(2‐ethylhexyl)‐3‐fluorothieno[3,4‐ b ]thiophene‐)‐2‐carboxylate‐2‐6‐diyl)] ( PBDTT‐FTTE ) and a semicrystalline acceptor polymer, poly{[ N , N′ ‐bis(2‐octyldodecyl)naphthalene‐1,4,5,8‐bis(dicarboximide)‐2,6‐diyl]‐alt‐5,5′‐(2,2′‐bithiophene)} ( P(NDI2OD‐T2) ) are systematically varied. The photovoltaic performance is correlated with active layer microstructural and optoelectronic data acquired by in‐depth transmission electron microscopy, grazing incidence wide‐angle X‐ray scattering, thermal analysis, and optical spectroscopic measurements. Coarse‐grained modeling provides insight into the effects of polymer aggregation on the blend morphology. Notably, the computed average distance between the donor and the acceptor polymers correlates well with solar cell photovoltaic metrics such as short‐circuit current density ( J sc ) and represents a useful index for understanding/predicting active layer blend material intermixing trends. Importantly, these results demonstrate that for polymers with different texturing tendencies (amorphous/semicrystalline), the key for optimal APSC performance, photovoltaic blend morphology can be controlledmore »
- Authors:
-
[6]
- Department of Chemistry the Materials Research Center and the Argonne‐Northwestern Solar Energy Research Center Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
- Department of Materials Science and Engineering the Materials Research Center and the Argonne‐Northwestern Solar Energy Research Center Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
- Department of Chemistry the Materials Research Center and the Argonne‐Northwestern Solar Energy Research Center Northwestern University 2145 Sheridan Road Evanston IL 60208 USA, Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA
- Flexterra Corporation 8025 Lamon Avenue Skokie IL 60077 USA
- Department of Chemistry the Materials Research Center and the Argonne‐Northwestern Solar Energy Research Center Northwestern University 2145 Sheridan Road Evanston IL 60208 USA, Flexterra Corporation 8025 Lamon Avenue Skokie IL 60077 USA
- Department of Chemistry the Materials Research Center and the Argonne‐Northwestern Solar Energy Research Center Northwestern University 2145 Sheridan Road Evanston IL 60208 USA, Department of Materials Science and Engineering the Materials Research Center and the Argonne‐Northwestern Solar Energy Research Center Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1416999
- Grant/Contract Number:
- DE‐SC0001059; DE‐AC02‐06CH11357
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Energy Materials
- Additional Journal Information:
- Journal Name: Advanced Energy Materials Journal Volume: 8 Journal Issue: 12; Journal ID: ISSN 1614-6832
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Wang, Gang, Eastham, Nicholas D., Aldrich, Thomas J., Ma, Boran, Manley, Eric F., Chen, Zhihua, Chen, Lin X., de la Cruz, Monica Olvera, Chang, Robert P. H., Melkonyan, Ferdinand S., Facchetti, Antonio, and Marks, Tobin J. Photoactive Blend Morphology Engineering through Systematically Tuning Aggregation in All‐Polymer Solar Cells. Germany: N. p., 2018.
Web. doi:10.1002/aenm.201702173.
Wang, Gang, Eastham, Nicholas D., Aldrich, Thomas J., Ma, Boran, Manley, Eric F., Chen, Zhihua, Chen, Lin X., de la Cruz, Monica Olvera, Chang, Robert P. H., Melkonyan, Ferdinand S., Facchetti, Antonio, & Marks, Tobin J. Photoactive Blend Morphology Engineering through Systematically Tuning Aggregation in All‐Polymer Solar Cells. Germany. https://doi.org/10.1002/aenm.201702173
Wang, Gang, Eastham, Nicholas D., Aldrich, Thomas J., Ma, Boran, Manley, Eric F., Chen, Zhihua, Chen, Lin X., de la Cruz, Monica Olvera, Chang, Robert P. H., Melkonyan, Ferdinand S., Facchetti, Antonio, and Marks, Tobin J. Mon .
"Photoactive Blend Morphology Engineering through Systematically Tuning Aggregation in All‐Polymer Solar Cells". Germany. https://doi.org/10.1002/aenm.201702173.
@article{osti_1416999,
title = {Photoactive Blend Morphology Engineering through Systematically Tuning Aggregation in All‐Polymer Solar Cells},
author = {Wang, Gang and Eastham, Nicholas D. and Aldrich, Thomas J. and Ma, Boran and Manley, Eric F. and Chen, Zhihua and Chen, Lin X. and de la Cruz, Monica Olvera and Chang, Robert P. H. and Melkonyan, Ferdinand S. and Facchetti, Antonio and Marks, Tobin J.},
abstractNote = {Abstract Polymer aggregation plays a critical role in the miscibility of materials and the performance of all‐polymer solar cells (APSCs). However, many aspects of how polymer texturing and aggregation affect photoactive blend film microstructure and photovoltaic performance are poorly understood. Here the effects of aggregation in donor–acceptor blends are studied, in which the number‐average molecular weights ( M n s) of both an amorphous donor polymer, poly[4,8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)benzo[1,2‐ b ;4,5‐ b′ ]dithiophene‐2,6‐diyl‐alt‐(4‐(2‐ethylhexyl)‐3‐fluorothieno[3,4‐ b ]thiophene‐)‐2‐carboxylate‐2‐6‐diyl)] ( PBDTT‐FTTE ) and a semicrystalline acceptor polymer, poly{[ N , N′ ‐bis(2‐octyldodecyl)naphthalene‐1,4,5,8‐bis(dicarboximide)‐2,6‐diyl]‐alt‐5,5′‐(2,2′‐bithiophene)} ( P(NDI2OD‐T2) ) are systematically varied. The photovoltaic performance is correlated with active layer microstructural and optoelectronic data acquired by in‐depth transmission electron microscopy, grazing incidence wide‐angle X‐ray scattering, thermal analysis, and optical spectroscopic measurements. Coarse‐grained modeling provides insight into the effects of polymer aggregation on the blend morphology. Notably, the computed average distance between the donor and the acceptor polymers correlates well with solar cell photovoltaic metrics such as short‐circuit current density ( J sc ) and represents a useful index for understanding/predicting active layer blend material intermixing trends. Importantly, these results demonstrate that for polymers with different texturing tendencies (amorphous/semicrystalline), the key for optimal APSC performance, photovoltaic blend morphology can be controlled via both donor and acceptor polymer aggregation.},
doi = {10.1002/aenm.201702173},
journal = {Advanced Energy Materials},
number = 12,
volume = 8,
place = {Germany},
year = {Mon Jan 15 00:00:00 EST 2018},
month = {Mon Jan 15 00:00:00 EST 2018}
}
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