Electrically-Switchable Gain in Optically Pumped CsPbBr₃ Lasers With Low Threshold at Nanosecond Pumping.

ABSTRACT: Metal halide perovskites hold promise for nonepitaxial laser diodes, yet, continuous-wave (CW) optically pumped (photonic) lasing in CsPbBr₃ remains elusive despite its superior thermal- and photo-stability among the perovskite family. This work reports on CsPbBr₃ vertical cavity surface emitting lasers with low lasing thresholds (1.3 µJ cm^{- 2}) at nanosecond pumping and remarkable lasing stability. Furthermore, the electrically switchable gain is achieved in CsPbBr₃ electrically assisted optically pumped laser (EAOPL) devices by leveraging ion migration. Applying a small positive DC voltage to the EAOPL device significantly reduces the lasing threshold under nanosecond laser excitation and enhances the cavity mode intensity at CW laser

SUBMITTER: Li Y 

PROVIDER: S-EPMC11962692 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature