New Insight into the Formation of Hybrid Perovskite Nanowires via Structure Directing Adducts
We report a facile preparation approach of MAPbBr(3), MAPbCl(3), or FAPbBr(3) (where MA = CH3NH3+ and FA = CH(NH2)(2)(+)) perovskite nanowires via sequential synthesis of MAPbI(3) and FAPbI(3) nanowires with chemically controlled composition and morphologies followed by an exchange of halide anions. The nanowires formation sequence includes intermediate phases such as MAI-PbI2-DMF and FAIPbIrDMF (DMF = dimethylformamide) acting as structure directing agent. The 1D shape of the adduct is preserved during the conversion to perovskite. The adducts play the role of key precursors controlling the final product morphology. Systematic investigations of the observed phase transformations and morphology features on multiple length scales revealed the effectiveness of the suggested synthetic route utilizing an original pseudomorph formation mechanism of the 1D structures to produce partly oriented films and textured layers of the nanowires via only a few experimental steps.
Cite this item
Petrov, A. A., Pellet, N., Seo, J.-Y., Belich, N. A., Kovalev, D. Yu., Shevelkov, A. V., Goodilin, E. A., Zakeeruddin, S. M., Tarasov, A. B., & Graetzel, M. (2017). New Insight into the Formation of Hybrid Perovskite Nanowires via Structure Directing Adducts. Chemistry of Materials, 29(2), 587–594. https://doi.org/10.1021/acs.chemmater.6b03965
Click Copy to copy the citation, or select the text manually.
WOS:000392891700016
2017
29
2
587
594
REVIEWED
EPFL