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Article Abstract
Metal halide perovskites hold promise for nonepitaxial laser diodes, yet, continuous-wave (CW) optically pumped (photonic) lasing in CsPbBr remains elusive despite its superior thermal- and photo-stability among the perovskite family. This work reports on CsPbBr vertical cavity surface emitting lasers with low lasing thresholds (1.3 µJ cm ) at nanosecond pumping and remarkable lasing stability. Furthermore, the electrically switchable gain is achieved in CsPbBr 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 excitation. These findings present a novel strategy, combining a small DC voltage with an electrical pulse, for exploring electrical injection lasing in CsPbBr perovskites.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11962692 | PMC |
| http://dx.doi.org/10.1002/smll.202411935 | DOI Listing |
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