In-Plane Anisotropic Nonlinear Optical Properties of Two-Dimensional Organic–Inorganic Hybrid Perovskite

Release time:2021-08-01

DOI number:10.1021/acs.jpclett.1c01890

Journal:J. Phys. Chem. Lett.

Abstract:Two-dimensional (2D) organic–inorganic hybrid perovskites (OIHPs) with superior nonlinear optical (NLO) properties show great versatility in frequency upconversion applications. Optical anisotropy plays an indispensable role in interpreting the interactions between incoming photons and crystal structure. Recently, the in-plane anisotropic NLO properties of 2D OIHPs have been reported and attracted much attention. However, the structure-related NLO anisotropy of the 2D OIHP framework is not well-established. Here, NLO properties of (C6H5(CH2)2NH3)2PbI4 (PEPI), (C6H11NH3)2PbI4 (C6H11), and (C4H9NH3)2PbI4 (C4PI) were systematically studied to interrogate the correlation between the in-plane anisotropic NLO responses and its lattice structure. In-plane nonparametric NLO responses, e.g., two-photon photoluminescence (2PPL) and three-photon photoluminescence (3PPL), manifest similar anisotropy configurations for PEPI, C6H11, and C4PI regardless of aromatic, cyclic, or linear organic molecules; however, the anisotropies of THG signals are strongly dependent on the specific crystal structures of the individual flakes, and they are much higher than that of the multiphoton excited photoluminescence.

Co-author:Menglong Zhu, Hao Chen, Xinyun Wang, Si Xiao, Kian Ping Loh, Goki Eda, Jianqiao Meng

First Author:Zhihui Chen

Indexed by:Journal paper

Correspondence Author:Qi Zhang, Jun He

Discipline:Natural Science

First-Level Discipline:Physics

Document Type:J

Volume:12

Issue:29

Page Number:7010–7018

Translation or Not:no

Date of Publication:2021-07-21

Included Journals:SCI

Links to published journals:https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.1c01890