Resonantly Pumped Bright-Triplet Exciton Lasing in Cesium Lead Bromide Perovskites.

ABSTRACT: The surprising recent observation of highly emissive triplet-states in lead halide perovskites accounts for their orders-of-magnitude brighter optical signals and high quantum efficiencies compared to other semiconductors. This makes them attractive for future optoelectronic applications, especially in bright low-threshold nanolasers. While nonresonantly pumped lasing from all-inorganic lead-halide perovskites is now well-established as an attractive pathway to scalable low-power laser sources for nano-optoelectronics, here we showcase a resonant optical pumping scheme on a fast triplet-state in CsPbBr₃ nanocrystals. The scheme allows us to realize a polarized triplet-laser source that dramatically enhances the coherent signal by 1 order of magnitude while suppressing noncoheren

SUBMITTER: Ying G 

PROVIDER: S-EPMC8451394 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature