Presentation Information
[7a-N307-6]Electric-field-induced second harmonic generation in layered perovskite
〇Daichi Okada1, Fumito Araoka2 (1.Kyoto Inst. of Tech., 2.RIKEN)
Keywords:
2D organic inorganic hybrid perovskite,Nonlinear optical response,Exciton
For the advancement of optical information technologies, nonlinear optical systems with tunable and reconfigurable functionalities are of critical importance. Electric-field-induced second harmonic generation (EFISH) offers a promising route for achieving electrical control over nonlinear light–matter interactions. However, the development of EFISH-active materials that are not only efficient, but also structurally simple and broadly adaptable, remains a major challenge. In this study, we demonstrate that two-dimensional (2D) organic–inorganic hybrid perovskites (OIHPs) exhibit exceptional EFISH performance with pronounced tunability. The second harmonic generation is dramatically enhanced under excitonic resonance, increasing by more than two orders of magnitude upon application of a 70 kV/cm electric field. Remarkably, this strong EFISH response is observed even in nonpolar and nonchiral 2D-OIHPs. These findings highlight the untapped potential of low-dimensional OIHPs as highly versatile nonlinear optical materials, paving the way for the development of tunable and dynamic NLO systems based on simple, scalable, and flexible material platforms.