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Improving the Extraction of Photogenerated Electrons with SnO2 Nanocolloids for Efficient Planar Perovskite Solar Cells
Abstract
Great attention to cost‐effective high‐efficiency solar power conversion of trihalide perovskite solar cells (PSCs) has been hovering at high levels in the recent 5 years. Among PSC devices, admittedly, TiO 2 is the most widely used electron transport layer (ETL); however, its low mobility which is even less than that of CH 3 NH 3 PbI 3 makes it not an ideal material. In principle, SnO 2 with higher electron mobility can be regarded as a positive alternative. Herein, a SnO 2 nanocolloid sol with ≈3 nm in size synthesized at 60 °C was spin‐coated onto the fuorine‐doped tin oxide (FTO) glass as the ETL of planar CH 3 NH 3 PbI 3 perovskite solar cells. TiCl 4 treatment of SnO 2‐coated FTO is found to improve crystallization and increase the surface coverage of perovskites, which plays a pivotal role in improving the power conversion efficiency (PCE). In this report, a champion efficiency of 14.69% (Jsc = 21.19 mA cm−2, Voc = 1023 mV, and FF = 0.678) is obtained with a metal mask at one sun illumination (AM 1.5G, 100 mW cm−2). Compared to the typical TiO 2, the SnO 2 ETL efficiently facilitates the separation and transportation of photogenerated electrons/holes from the perovskite absorber, which results in a significant enhancement of photocurrent and PCE.
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Stranks, S. D., Eperon, G. E., Grancini, G., Menelaou, C., Alcocer, M. J. P., Leijtens, T., Herz, L. M., Petrozza, A., & Snaith, H. J. (2013) · Science · doi:10.1126/science.1243982 · Cited by 10,413
Kim, H.-S., Lee, C.-R., Im, J.-H., Lee, K.-B., Moehl, T., Marchioro, A., Moon, S.-J., Humphry-Baker, R., Yum, J.-H., Moser, J. E., et al. (2012) · Scientific Reports · doi:10.1038/srep00591 · Cited by 8,092
Cited by
Zhu, Z., Bai, Y., Liu, X., Chueh, C., Yang, S., & Jen, A. K. ‐. (2016) · Advanced Materials · doi:10.1002/adma.201600619 · Cited by 499
Rajagopal, A., Yao, K., & Jen, A. K. ‐. (2018) · Advanced Materials · doi:10.1002/adma.201800455 · Cited by 429
Solution-Processed Nb:SnO2 Electron Transport Layer for Efficient Planar Perovskite Solar Cells
Ren, X., Yang, D., Yang, Z., Feng, J., Zhu, X., Niu, J., Liu, Y., Zhao, W., & Liu, S. F. (2017) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.6b13362 · Cited by 355
Tin Oxide Electron‐Selective Layers for Efficient, Stable, and Scalable Perovskite Solar Cells
Altinkaya, C., Aydin, E., Ugur, E., Isikgor, F. H., Subbiah, A. S., De Bastiani, M., Liu, J., Babayigit, A., Allen, T. G., Laquai, F., et al. (2021) · Advanced Materials · doi:10.1002/adma.202005504 · Cited by 348
Simplified interconnection structure based on C60/SnO2-x for all-perovskite tandem solar cells
Yu, Z., Yang, Z., Ni, Z., Shao, Y., Chen, B., Lin, Y., Wei, H., Yu, Z. J., Holman, Z., & Huang, J. (2020) · Nature Energy · doi:10.1038/s41560-020-0657-y · Cited by 298
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Metadata
- Authors
- Rao, H., Chen, B., Li, W., Xu, Y., Chen, H., Kuang, D., & Su, C.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2015-11-02
- Volume
- 25
- Issue
- 46
- Pages
- 7200-7207
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W1947987917
- Cited by
- 222
- References
- 2
- FWCI
- 13.95
- Type
- journal article
- Language
- en
- Open access
- closed
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- Rao, H., Chen, B., Li, W., Xu, Y., Chen, H., Kuang, D., & Su, C. (2015). Improving the Extraction of Photogenerated Electrons with SnO2 Nanocolloids for Efficient Planar Perovskite Solar Cells. Advanced Functional Materials. https://doi.org/10.1002/adfm.201501264
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