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Hybrid metal halide perovskite has emerged as a remarkable light-emitting material for photonic devices ranging from lasers, LEDs, photodetectors (PDs), and photonic metamaterials. While the demonstration of electrically pumped lasing from perovskite is still elusive, optically pumped continuous wave (CW) lasing is a necessary intermediate step to achieve this goal. We show green lasing under quasi-CW optical pumping at Peltier-cooling accessible 260K, from a directly patterned and encapsulated MAPbBr3 photonic crystal cavity. In the meantime, Hyperbolic metamaterial (HMM) is a special class of anisotropic material that has drawn tremendous research attention recently, as it exhibits metal and dielectric features at the same time. This unique feature allows HMMs to be used in applications such as super-resolution imaging, spontaneous emission enhancement, and topological photonics. However, due to the inherent loss from the metal constituent, HMM’s insertion into these applications is hindered. In order to overcome this hurdle, we show a luminescent MAPbI3 perovskite/Au HMM, wherein the dielectric constituent is fully composed of perovskite gain, thus compensating for the metal loss. In terms of PDs, the main challenge in perovskite PDs is to simultaneously achieve high responsivity and fast speed. By employing a directly patterned nanograting MAPbI3 metal-semiconductor-metal (MSM) perovskite PD on interdigitated ITO electrodes. Because of the improved perovskite morphology after directly patterning, as well as the enhanced electric field intensity by the perovskite nanograting and interdigitated electrodes, our perovskite PDs have high responsivity, short response time, and high detectivity, all of which are among the best performance in MSM perovskite PDs. Moreover, our perovskite PDs maintain excellent photocurrent performance after 20 days of air exposure. We believe the integration of these directly patterned perovskite devices can enable all-perovskite photonic integrated circuits.
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