Fig. 1
From: Quantitative optical assessment of photonic and electronic properties in halide perovskite

Sketch of the experimental observations and of the physical mechanisms taking place. a Sample structure and sketch showing the triple mechanism (carrier diffusion, photon propagation, and photon recycling) studied here b sketch showing the acquisition in 3 dimensions with time-resolved fluorescence imaging (TR-FLIM) or hyperspectral imaging (HI), for a point illumination sketched in the left face