Work

Nonlinear Absorption in 2D Ruddlesden–Popper Perovskites: Pathways to Ultrafast Optical Applications

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Owing to their distinctive photophysical properties resulting from their larger exciton binding energy and the influence of dielectric and quantum confinement effects, considerable research interest has been directed toward two-dimensional Ruddlesden–Popper halide perovskites (2D RP-HPs). Particularly, 2D RP-HPs exhibit exceptional multiphoton absorption (MPA) effects that reveal versatile applications. In this work, two-photon absorption (2PA) and three-photon absorption (3PA) in 2D RP-HPs, specifically (PEA) 2 PbBr 4 and (BA) 2 PbBr 4 platelets, have been demonstrated through their photoluminescence spectra under multiphoton excitation, revealing a power law relationship with excitation energy. On the other hand, polarization-dependent MPA measurements are also conducted to obtain their anisotropy properties. The excellent 2PA and 3PA effects of 2D RP-HPs have found applications in ultrafast optics to construct fringe-resolved autocorrelation traces, enabling the retrieval of pulse duration not only passively mode-locked Ti:sapphire at 800 nm but also Yb-doped fiber lasers at 1030 nm.

Source: The Journal of Physical Chemistry Letters

DOI: 10.1021/acs.jpclett.4c01673

Authors: Ja-Hon Lin, Jen-Feng Hsu, Yi-Chung Yang, ChunChe Lin, Chiung-Cheng Huang, YanQi Ge

Institutions: National Taipei University of Technology, Tatung University, Shenzhen University

Language: English

Topic: Perovskite Materials and Applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funders: National Taipei University of Technology, Shenzhen University, National Science and Technology Council