[21p-B101-1~8] 【Onsite Only】Creation and application of perovskite as a next-generation materials

[21p-B101-2] Amplified Spontaneous Emission Dynamics in a Lead Halide Perovskite Microcrystal as Revealed by Femtosecond Transient Absorption Microscopy

〇Tetsuro Katayama^1,2 (1.pLED, 2.Tokushima Univ.)

Keywords:transient absorption microscopy, lead halide perovskite, lasing

Lead halide perovskite microcrystals have been reported to exhibit low-threshold lasing at room temperature, and since the emission wavelength can be easily controlled by the halide mixture ratio, they are expected to be next-generation optoelectronic materials. However, the interaction between light and materials depends on the size and shape of the resonator, and the initial process of lasing is still unknown. In this study, we measured the carrier dynamics of perovskite single crystals using a femtosecond transient absorption microscopy system and observed the initial process of lasing followed by amplified spontaneous emission.