Manipulating Photon Propagation via a Perovskite Microwire Array

Manipulating the propagation of photons is meaningful for optical data recognition but extremely challenging. Recently, the metal halide perovskite semiconductors present great potential in photonics and optoelectronics applications, such as waveguide, lasing, photoluminescence, electroluminescence, photovoltaic, and photodetection. However, so far there are only few research studies that have focused their attention on the management of photons applying this type of emerging and promising semiconductors. Herein, we propose a conceptually new perovskite microconfiguration which could delay the photon propagation and guide the photon flow direction with at least 30 times multiplication of communication bandwidth. The defect localization effect on photo-excited carriers slows down the photon transmission on the microsecond scale. Furthermore, we propose a controllable photon communication speed ascribing to a continuous wave laser irradiation-tunable recombination rate. The present results indicate the great potential of inorganic perovskite in all-optical information processing.