Stretchable alternating current electroluminescent display is an emerging form of light-emitting device by combining elasticity with optoelectronic properties. The practical implementations are currently impeded by the high operating voltages required to achieve sufficient brightness. In this study, we report the development of dielectric nanocomposites by filling surface-modified ceramic nanoparticles into polar elastomers, which exhibit a series of desirable attributes, in terms of high permittivity, mechanical deformability, and solution processability. Dielectric nanocomposite effectively concentrates electric fields onto phosphor to enable low-voltage operation of stretchable electroluminescent display, thereby alleviating safety concerns toward wearable applications. The practical feasibility is demonstrated by an epidermal stopwatch that allows intimate integration with the human body. The high-permittivity nanocomposites reported here represent an attractive building block for stretchable electronic systems, which may find broad range of applications in intrinsically stretchable transistors, sensors, light-emitting devices, and energy-harvesting devices.

中文翻译：

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用于表皮交流电电致发光显示器的可拉伸高介电常数纳米复合材料

可伸缩的交流电致发光显示器是通过将弹性与光电特性相结合而形成的一种发光装置。当前，实际的实现受到实现足够亮度所需的高工作电压的阻碍。在这项研究中，我们报道了通过将表面改性的陶瓷纳米粒子填充到极性弹性体中，介电纳米复合材料的发展，这在高介电常数，机械变形性和溶液加工性方面表现出一系列理想的属性。介电纳米复合材料可有效地将电场集中到磷光体上，以使可拉伸电致发光显示器在低压下工作，从而减轻了可穿戴应用的安全隐患。表皮秒表证明了其实际可行性，它可以与人体紧密结合。本文报道的高介电常数纳米复合材料是可拉伸电子系统的一个有吸引力的构建基块，可在本质上可拉伸的晶体管，传感器，发光器件和能量收集器件中找到广泛的应用。