Metal halide perovskite materials have been widely studied recently due to their excellent optoelectronic properties. Among these materials, organic-inorganic hybrid perovskites have attracted much attention because of their relatively soft framework, which makes them more suitable for nonlinear optical (NLO) applications. However, there is rare physical mechanism study on the coexistence of two-photon absorption (TPA) and saturable absorption (SA) in organic-inorganic hybrid perovskite materials. To clarify this issue, the NLO properties of mixed cation perovskite
Xuanyu Zhang, Shuyu Xiao, Ruxue Li, Tingchao He, Guichuan Xing, Rui Chen. Influence of mixed organic cations on the nonlinear optical properties of lead tri-iodide perovskites[J]. Photonics Research, 2020, 8(9): A25