The DOI matches its Crossref record; 55 of the 55 references it cites were found in a registry or an index.
Realizing Efficient Lead‐Free Formamidinium Tin Triiodide Perovskite Solar Cells via a Sequential Deposition Route
Abstract
Recently, the evolved intermediate phase based on iodoplumbate anions that mediates perovskite crystallization has been embodied as the Lewis acid–base adduct formed by metal halides (serve as Lewis acid) and polar aprotic solvents (serve as Lewis base). Based on this principle, it is proposed to constitute efficient Lewis acid–base adduct in the SnI 2 deposition step to modulate its volume expansion and fast reaction with methylammonium iodide (MAI)/formamidinium iodide (FAI) (FAI is studied hereafter). Herein, trimethylamine (TMA) is employed as the additional Lewis base in the tin halide solution to form SnY 2–TMA complexes (Y = I−, F−) in the first‐step deposition, followed by intercalating with FAI to convert into FASnI. It is shown that TMA can facilitate homogeneous film formation of a SnI 2 (+SnF 2) layer by effectively forming intermediate SnY 2–TMA complexes. Meanwhile, its relatively larger size and weaker affinity with SnI 2 than FA+ ions will facilitate the intramolecular exchange with FA+ ions, thereby enabling the formation of dense and compact FASnI 3 film with large crystalline domain (>1 µm). As a result, high power conversion efficiencies of 4.34% and 7.09% with decent stability are successfully accomplished in both conventional and inverted perovskite solar cells, respectively.
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Cited by
“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells
Ke, W., Stoumpos, C. C., & Kanatzidis, M. G. (2019) · Advanced Materials · doi:10.1002/adma.201803230 · Cited by 533
Lead-Free Perovskite Materials for Solar Cells
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Metadata
- Authors
- Zhu, Z., Chueh, C., Li, N., Mao, C., & Jen, A. K. ‐.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2017-12-18
- Volume
- 30
- Issue
- 6
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2779281322
- Cited by
- 267
- References
- 55
- FWCI
- 9.51
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhu, Z., Chueh, C., Li, N., Mao, C., & Jen, A. K. ‐. (2018). Realizing Efficient Lead‐Free Formamidinium Tin Triiodide Perovskite Solar Cells via a Sequential Deposition Route. Advanced Materials. https://doi.org/10.1002/adma.201703800
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