The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Hierarchical Nanomorphologies Promote Exciton Dissociation in Polymer/Fullerene Bulk Heterojunction Solar Cells
Abstract
PTB7 semiconducting copolymer comprising thieno[3,4-b]thiophene and benzodithiophene alternating repeat units set a historic record of solar energy conversion efficiency (7.4%) in polymer/fullerene bulk heterojunction solar cells. To further improve solar cell performance, a thorough understanding of structure-property relationships associated with PTB7/fullerene and related organic photovoltaic (OPV) devices is crucial. Traditionally, OPV active layers are viewed as an interpenetrating network of pure polymers and fullerenes with discrete interfaces. Here we show that the active layer of PTB7/fullerene OPV devices in fact involves hierarchical nanomorphologies ranging from several nanometers of crystallites to tens of nanometers of nanocrystallite aggregates in PTB7-rich and fullerene-rich domains, themselves hundreds of nanometers in size. These hierarchical nanomorphologies are coupled to significantly enhanced exciton dissociation, which consequently contribute to photocurrent, indicating that the nanostructural characteristics at multiple length scales is one of the key factors determining the performance of PTB7 copolymer, and likely most polymer/fullerene systems, in OPV devices.
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Cites
Conjugated Polymer-Based Organic Solar Cells
Günes, S., Neugebauer, H., & Sariciftci, N. S. (2007) · Chemical Reviews · doi:10.1021/cr050149z · Cited by 6,279
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Efficient organic solar cells processed from hydrocarbon solvents
Zhao, J., Li, Y., Yang, G., Jiang, K., Lin, H., Ade, H., Ma, W., & Yan, H. (2016) · Nature Energy · doi:10.1038/nenergy.2015.27 · Cited by 2,367
Bulk Heterojunction Solar Cells: Morphology and Performance Relationships
Huang, Y., Kramer, E. J., Heeger, A. J., & Bazan, G. C. (2014) · Chemical Reviews · doi:10.1021/cr400353v · Cited by 1,249
A Large‐Bandgap Conjugated Polymer for Versatile Photovoltaic Applications with High Performance
Zhang, M., Guo, X., Ma, W., Ade, H., & Hou, J. (2015) · Advanced Materials · doi:10.1002/adma.201502110 · Cited by 1,247
Collins, B. A., Li, Z., Tumbleston, J. R., Gann, E., McNeill, C. R., & Ade, H. (2013) · Advanced Energy Materials · doi:10.1002/aenm.201200377 · Cited by 649
Light Harvesting for Organic Photovoltaics
Hedley, G. J., Ruseckas, A., & Samuel, I. D. W. (2017) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00215 · Cited by 580
Metadata
- Authors
- Chen, W., Xu, T., He, F., Wang, W., Wang, C., Strzalka, J., Liu, Y., Wen, J., Miller, D. J., Chen, J., Hong, K., Yu, L., & Darling, S. B.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-08-10
- Volume
- 11
- Issue
- 9
- Pages
- 3707-3713
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2033789561
- Cited by
- 424
- References
- 1
- FWCI
- 33.87
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, W., Xu, T., He, F., Wang, W., Wang, C., Strzalka, J., Liu, Y., Wen, J., Miller, D. J., Chen, J., Hong, K., Yu, L., & Darling, S. B. (2011). Hierarchical Nanomorphologies Promote Exciton Dissociation in Polymer/Fullerene Bulk Heterojunction Solar Cells. Nano Letters. https://doi.org/10.1021/nl201715q
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