Two-dimensional (2D) perovskite have been widely researched for solar cells, light-emitting diodes, photodetectors because of their excellent environmental stability and optoelectronic properties in comparison to three-dimensional (3D) perovskite. In this study, we demonstrate the high response of 2D-(PEA)PbBr perovskite of the horizontal vapor sensor was outstandingly more superior than 3D-MAPbBr perovskite. 2D transverse perovskite layer have the large surface-to-volume ratio and reactive surface, with the charge transfer mechanism, which was suitable for vapor sensing and trapping. Thus, 2D perovskite vapor sensors demonstrate the champion current response ratio R of 107.32 under the ethanol vapors, which was much faster than 3D perovskite (R = 2.92).
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9658801 | PMC |
| http://dx.doi.org/10.3390/s22218155 | DOI Listing |
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