Bearing a tert-butyl bulky group, t-butylammonium bromide (tBABr) is commonly used to alter perovskite structures to promote material solubility and device stability - by making them less sensitive to moisture (compared to 3D methylammonium-based perovskites).
Plate-like 2D-phase crystallites were observed standing up between the 3D perovskite grains, and crystallinity was remarkably enhanced by precursors with bulky alkyl groups present in the perovskite structure.
|Molecular weight||154.05 g/mol|
|Synonyms||tBABr, tert-Butanamine hydrobromide, 2-
|Classification / Family||Alkylammonium halides, Perovskite precursor materials, Perovskite solar cells, Perovskite LEDs|
Literature and reviews
- A layered hybrid perovskite solar-cell absorber with enhanced moisture stability, I. C. Smith et al., Angew. Chem. Int. Edn 53, 11232–11235 (2014); DOI: 10.1002/ange.201406466.
- 2D homologous perovskites as light-absorbing materials for solar cell applications, D. H. Cao et al., J. Am. Chem. Soc. 137, 7843–7850 (2015); DOI: 10.1021/jacs.5b03796.
- Efficient ambient-air-stable solar cells with 2D–3D heterostructured butylammonium-caesium-formamidinium lead halide perovskites, Z. Wang et al., Nat. Energy, 6 17135 (2017); doi:10.1038/nenergy.2017.135.
- Extremely efficient internal exciton dissociation through edge states in layered 2D perovskites, J.-C. Blancon et al., Science, 10.1126/science.aal4211 (2017); DOI: 10.1126/science.aal4211.
- Efficient perovskite light-emitting diodes featuring nanometre-sized crystallites, Z. Xiao et al., Nat. Photonics, 11, 108–115 (2017); doi:10.1038/nphoton.2016.269.
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