The possible existence of mixed methylammonium (MA)/dimethylammonium (DMA) lead bromide hybrid perovskites of general formula MA 1-x DMA x PbBr 3 (0 ≤ x ≤ 1) was investigated. A combined X-ray diffraction and solid-state nuclear magnetic resonance approach indicates that DMA can be incorporated up to about x = 0.30 while retaining the cubic lattice of MAPbBr 3 . By increasing the DMA content (x), the absorption shows a progressive blue shift and the band gap moves from about 2.17 eV (x = 0) to about 2.23 (x = 0.30) with a concomitant slightly faster recombination in the mixed cation powders.

Investigation of Dimethylammonium Solubility in MAPbBr 3 Hybrid Perovskite: Synthesis, Crystal Structure, and Optical Properties

Chierotti M. R.;Bordignon S.;
2019-01-01

Abstract

The possible existence of mixed methylammonium (MA)/dimethylammonium (DMA) lead bromide hybrid perovskites of general formula MA 1-x DMA x PbBr 3 (0 ≤ x ≤ 1) was investigated. A combined X-ray diffraction and solid-state nuclear magnetic resonance approach indicates that DMA can be incorporated up to about x = 0.30 while retaining the cubic lattice of MAPbBr 3 . By increasing the DMA content (x), the absorption shows a progressive blue shift and the band gap moves from about 2.17 eV (x = 0) to about 2.23 (x = 0.30) with a concomitant slightly faster recombination in the mixed cation powders.
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http://pubs.acs.org/journal/inocaj
https://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.8b03072
Anelli C.; Chierotti M.R.; Bordignon S.; Quadrelli P.; Marongiu D.; Bongiovanni G.; Malavasi L.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1730555
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