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Enhanced Stability of Sn-based Hybrid Perovskites Induced by Dimethylammonium (DMA): Synthesis, Characterization, Aging and Hydrogen Photogeneration of the MA1-xDMAxSnBr3 System

Abstract

The novel MA1-xDMAxSnBr3 system has been synthesized and characterized concerning the structural and optical properties. The progressive alloying on the A-site occurs up to x=0.60 and results in a linear blue-shift of the absorption edge with DMA content. Mixed phase maintains the cubic crystal structure of parent MASnBr3. Aging test coupled to X-ray photoelectron spectroscopy indicates that DMASnBr3 is highly tolerant against air-exposure in terms both of crystal structure and optical properties thus representing a first example of a Sn(II)-containing defect-tolerant hybrid perovskite. In addition, thanks to such stability, evidence of hydrogen photogeneration by DMASnBr3 is reported.

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Publication details

The article was received on 01 Apr 2019, accepted on 07 May 2019 and first published on 10 May 2019


Article type: Paper
DOI: 10.1039/C9TC01743G
J. Mater. Chem. C, 2019, Accepted Manuscript

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    Enhanced Stability of Sn-based Hybrid Perovskites Induced by Dimethylammonium (DMA): Synthesis, Characterization, Aging and Hydrogen Photogeneration of the MA1-xDMAxSnBr3 System

    L. Malavasi, P. Quadrelli, L. Sangaletti, A. Pisanu, G. Drera and A. Speltini, J. Mater. Chem. C, 2019, Accepted Manuscript , DOI: 10.1039/C9TC01743G

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