The DOI matches its Crossref record; 64 of the 64 references it cites were found in a registry or an index.
Dual Interfacial Design for Efficient CsPbI2Br Perovskite Solar Cells with Improved Photostability
Abstract
A synergic interface design is demonstrated for photostable inorganic mixed‐halide perovskite solar cells (PVSCs) by applying an amino‐functionalized polymer (PN4N) as cathode interlayer and a dopant‐free hole‐transporting polymer poly[5,5′‐bis(2‐butyloctyl)‐(2,2′‐bithiophene)‐4,4′‐dicarboxylate‐alt‐5,5′‐2,2′‐bithiophene] (PDCBT) as anode interlayer. First, the interfacial dipole formed at the cathode interface reduces the workfunction of SnO 2, while PDCBT with deeper‐lying highest occupied molecular orbital (HOMO) level provides a better energy‐level matching at the anode, leading to a significant enhancement in open‐circuit voltage (Voc) of the PVSCs. Second, the PN4N layer can also tune the surface wetting property to promote the growth of high‐quality all‐inorganic perovskite films with larger grain size and higher crystallinity. Most importantly, both theoretical and experimental results reveal that PN4N and PDCBT can interact strongly with the perovskite crystal, which effectively passivates the electronic surface trap states and suppresses the photoinduced halide segregation of CsPbI 2 Br films. Therefore, the optimized CsPbI 2 Br PVSCs exhibit reduced interfacial recombination with efficiency over 16%, which is one of the highest efficiencies reported for all‐inorganic PVSCs. A high photostability with a less than 10% efficiency drop is demonstrated for the CsPbI 2 Br PVSCs with dual interfacial modifications under continuous 1 sun equivalent illumination for 400 h.
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Cites
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Cited by
Regulating strain in perovskite thin films through charge-transport layers
Xue, D.-J., Hou, Y., Liu, S.-C., Wei, M., Chen, B., Huang, Z., Li, Z., Sun, B., Proppe, A. H., Dong, Y., et al. (2020) · Nature Communications · doi:10.1038/s41467-020-15338-1 · Cited by 678
Recent progress of inorganic perovskite solar cells
Tai, Q., Tang, K.-C., & Yan, F. (2019) · Energy & Environmental Science · doi:10.1039/c9ee01479a · Cited by 528
Controlled n‐Doping in Air‐Stable CsPbI2Br Perovskite Solar Cells with a Record Efficiency of 16.79%
Han, Y., Zhao, H., Duan, C., Yang, S., Yang, Z., Liu, Z., & Liu, S. (. (2020) · Advanced Functional Materials · doi:10.1002/adfm.201909972 · Cited by 367
Perovskite Solar Cells: Can We Go Organic‐Free, Lead‐Free, and Dopant‐Free?
Miyasaka, T., Kulkarni, A., Kim, G. M., Öz, S., & Jena, A. K. (2020) · Advanced Energy Materials · doi:10.1002/aenm.201902500 · Cited by 293
Metadata
- Authors
- Tian, J., Xue, Q., Tang, X., Chen, Y., Li, N., Hu, Z., Shi, T., Wang, X., Huang, F., Brabec, C. J., Yip, H., & Cao, Y.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2019-04-11
- Volume
- 31
- Issue
- 23
- Pages
- e1901152-e1901152
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2936732930
- Cited by
- 398
- References
- 64
- FWCI
- 25.29
- Type
- journal article
- Language
- en
- Open access
- closed
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- Tian, J., Xue, Q., Tang, X., Chen, Y., Li, N., Hu, Z., Shi, T., Wang, X., Huang, F., Brabec, C. J., Yip, H., & Cao, Y. (2019). Dual Interfacial Design for Efficient CsPbI2Br Perovskite Solar Cells with Improved Photostability. Advanced Materials. https://doi.org/10.1002/adma.201901152
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