The DOI matches its Crossref record; 63 of the 63 references it cites were found in a registry or an index.
High-Performance Ternary Organic Solar Cell Enabled by a Thick Active Layer Containing a Liquid Crystalline Small Molecule Donor
Abstract
Ternary organic solar cells (OSCs) have attracted much research attention in the past few years, as ternary organic blends can broaden the absorption range of OSCs without the use of complicated tandem cell structures. Despite their broadened absorption range, the light harvesting capability of ternary OSCs is still limited because most ternary OSCs use thin active layers of about 100 nm in thickness, which is not sufficient to absorb all photons in their spectral range and may also cause problems for future roll-to-roll mass production that requires thick active layers. In this paper, we report a highly efficient ternary OSC (11.40%) obtained by incorporating a nematic liquid crystalline small molecule (named benzodithiophene terthiophene rhodanine (BTR)) into a state-of-the-art PTB7-Th:PC71BM binary system. The addition of BTR into PTB7-Th:PC71BM was found to improve the morphology of the blend film with decreased π-π stacking distance, enlarged coherence length, and enhanced domain purity. This resulted in more efficient charge separation, faster charge transport, and less bimolecular recombination, which, when combined, led to better device performance even with thick active layers. Our results show that the introduction of highly crystalline small molecule donors into ternary OSCs is an effective means to enhance the charge transport and thus increase the active layer thickness of ternary OSCs to make them more suitable for roll-to-roll production than previous thinner devices.
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Li, Y., Xu, G., Cui, C., & Li, Y. (2018) · Advanced Energy Materials · doi:10.1002/aenm.201701791 · Cited by 788
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Metadata
- Authors
- Zhang, G., Zhang, K., Yin, Q., Jiang, X.-F., Wang, Z., Xin, J., Ma, W., Yan, H., Huang, F., & Cao, Y.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-02-06
- Volume
- 139
- Issue
- 6
- Pages
- 2387-2395
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2582059025
- Cited by
- 435
- References
- 63
- FWCI
- 34.57
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhang, G., Zhang, K., Yin, Q., Jiang, X.-F., Wang, Z., Xin, J., Ma, W., Yan, H., Huang, F., & Cao, Y. (2017). High-Performance Ternary Organic Solar Cell Enabled by a Thick Active Layer Containing a Liquid Crystalline Small Molecule Donor. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.6b11991
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