Issue 22, 2022

Femtosecond induced third-order optical nonlinearity in quasi 2D Ruddlesden–Popper perovskite film deciphered using Z-scan

Abstract

Ruddlesden–Popper perovskite is a class of layered halide perovskite which gained much attention over the past few years in the field of photovoltaics. Herein, we have presented a compendious sketch of third-order nonlinear optical (NLO) properties of (PEA)2Cs4Pb5Br16, a quasi-two-dimensional (2D) perovskite using femtosecond Z-scan technique at 800 nm. Our open aperture (OA) Z-scan measurements unveiled saturable absorption (SA) behaviour of the 2D perovskite with a nonlinear absorption coefficient of −13.83 cm GW−1, which is an order of magnitude higher than other 2D materials. Nonetheless, the self-defocusing effect has been demonstrated using a closed aperture (CA) Z-scan measurement. High nonlinear absorption coefficient and low saturation intensity (38.81 GW cm−2) infer that (PEA)2Cs4Pb5Br16 perovskite film could be useful for ultrafast photonic applications.

Graphical abstract: Femtosecond induced third-order optical nonlinearity in quasi 2D Ruddlesden–Popper perovskite film deciphered using Z-scan

Supplementary files

Article information

Article type
Paper
Submitted
22 Jun 2022
Accepted
16 Aug 2022
First published
17 Aug 2022
This article is Open Access
Creative Commons BY license

Mater. Adv., 2022,3, 8211-8219

Femtosecond induced third-order optical nonlinearity in quasi 2D Ruddlesden–Popper perovskite film deciphered using Z-scan

A. Mushtaq, B. Pradhan, D. Kushavah, Y. Zhang, D. Naumenko, H. Amenitsch, J. Hofkens and S. K. Pal, Mater. Adv., 2022, 3, 8211 DOI: 10.1039/D2MA00724J

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