Royal Society of Chemistry, Materials Advances, 22(3), p. 8211-8219, 2022
DOI: 10.1039/d2ma00724j
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A quasi 2D Ruddlesden–Popper perovskite, (PEA)2Cs4Pb5Br16 exhibits superior third-order nonlinear optical properties, which is promising for the development of ultrafast photonic devices.