Polycrystalline powder samples of the novel MA1−xDMAxSnBr3 system have been synthesized and characterized concerning their 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 the DMA content. Mixed phase samples maintain the cubic crystal structure of parent MASnBr3 with a quasi-linear expansion of the cell volume as the DMA content increases. Aging test coupled with X-ray photoelectron spectroscopy indicates that DMASnBr3 is highly tolerant against air-exposure in terms of both crystal structure and optical properties thus representing a first example of highly-stable Sn(II)-containing hybrid perovskite. In addition, thanks to such stability, proof-of-concept and demonstration of hydrogen photogeneration by DMASnBr3 is reported. Evidence of air-stabile Sn(II)-containing perovskites represent a significant further step in the development of tin-containing photovoltaic devices

Pisanu, A., Speltini, A., Quadrelli, P., Drera, G., Sangaletti, L. E., Malavasi, L., Enhanced air-stability of Sn-based hybrid perovskites induced by dimethylammonium ({DMA}): synthesis, characterization, aging and hydrogen photogeneration of the {MA}1-{xDMAxSnBr}3 system, <<JOURNAL OF MATERIALS CHEMISTRY. C>>, 2019; 7 (N/A): 7020-7026. [doi:10.1039/C9TC01743G] [http://hdl.handle.net/10807/146799]

Enhanced air-stability of Sn-based hybrid perovskites induced by dimethylammonium ({DMA}): synthesis, characterization, aging and hydrogen photogeneration of the {MA}1-{xDMAxSnBr}3 system

Paolo; Drera;Giovanni; Sangaletti;
2019

Abstract

Polycrystalline powder samples of the novel MA1−xDMAxSnBr3 system have been synthesized and characterized concerning their 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 the DMA content. Mixed phase samples maintain the cubic crystal structure of parent MASnBr3 with a quasi-linear expansion of the cell volume as the DMA content increases. Aging test coupled with X-ray photoelectron spectroscopy indicates that DMASnBr3 is highly tolerant against air-exposure in terms of both crystal structure and optical properties thus representing a first example of highly-stable Sn(II)-containing hybrid perovskite. In addition, thanks to such stability, proof-of-concept and demonstration of hydrogen photogeneration by DMASnBr3 is reported. Evidence of air-stabile Sn(II)-containing perovskites represent a significant further step in the development of tin-containing photovoltaic devices
Inglese
Pisanu, A., Speltini, A., Quadrelli, P., Drera, G., Sangaletti, L. E., Malavasi, L., Enhanced air-stability of Sn-based hybrid perovskites induced by dimethylammonium ({DMA}): synthesis, characterization, aging and hydrogen photogeneration of the {MA}1-{xDMAxSnBr}3 system, <<JOURNAL OF MATERIALS CHEMISTRY. C>>, 2019; 7 (N/A): 7020-7026. [doi:10.1039/C9TC01743G] [http://hdl.handle.net/10807/146799]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/146799
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