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• W4307003625 endingPage "139927" @default.
• W4307003625 startingPage "139927" @default.
• W4307003625 abstract "• A micro-molding process was used to form a perovskite micro-pattern array. • The exposed HTL was passivated with a hydrophobic polymer by capillary molding. • Polymers with different functional groups were applied to passivate the perovskite. • The CsPbBr 3 –PAN micro PeLED exhibited an EQE of 12.8% at a luminance of 10737 cd m –2 . Perovskite is an emerging material for light-emitting diode (LED) applications, and the external quantum efficiency (EQE) of perovskite LEDs (PeLEDs) has rapidly improved compared to state-of-the-art organic and quantum-dot LEDs. In addition, mini/micro LEDs have attracted significant attention as next-generation displays owing to their desirable characteristics such as low power consumption, high contrast ratio, high brightness, fast response speed, and high efficiency. In this study, we successfully develop a high-resolution large-area soft lithography method for the micro-patterning of a perovskite emissive layer. This approach is based on micro- and capillary-molding processes, and the highest achievable pattern resolution is 5 μm. In addition, to further improve the efficiency and stability of the micro PeLEDs, various polymers with different functional groups are applied to passivate the perovskite surface. Consequently, the CsPbBr 3 –polyacrylonitrile (PAN) micro PeLEDs demonstrate the optimum performance and high stability, with the maximum EQE of 12.8%, maximum luminance of 10737 cd m –2 , and half-life of 993 s with 1270 pixels per inch (ppi). Our work demonstrates the feasibility of micro-patterned perovskites as well as the potential of perovskites for use in ultra high-resolution displays (UHDs)." @default.
• W4307003625 created "2022-10-22" @default.
• W4307003625 creator A5025204703 @default.
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• W4307003625 date "2023-02-01" @default.
• W4307003625 modified "2023-09-29" @default.
• W4307003625 title "Strategy for the fabrication of perovskite-based green micro LED for ultra high-resolution displays by micro-molding process and surface passivation" @default.
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• W4307003625 doi "https://doi.org/10.1016/j.cej.2022.139927" @default.
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