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. 2023 Jun 30;14(7):1354. doi: 10.3390/mi14071354

Figure 1.

Figure 1

A list of four research directions for LEDs integrated with metasurface. (a) Disordered Ag nanoparticle metasurface to improve the LEE of LEDs. Reproduced with permission from [17], [Light: Science & Applications]; published by Nature Publishing Group, 2021. (b) Distributed Bragg reflector (DBR) resonator to improve the emitted light collimation of Micro-LEDs. Reproduced with permission from [18], [Applied Physics Letters]; published by AIP Publishing, 2022. (c) Metasurface structures to achieve directed light emission of Micro-LEDs. Adapted with permission from [19] © The Optical Society. (d) Metasurface and grating to improve the extinction ratio (ER) of polarized Micro-LEDs. Adapted with permission from [15] © The Optical Society.