As a new kind of highly efficient luminescent materials, quasi-two-dimensional (quasi-2D) perovskites show great potential in industrial display applications. In this work, the poling methods are used in modulating the phase arrangement in quasi-2D perovskite light-emitting diodes (PeLEDs). We find the effective modulation of different phase components in uniform arrangement can enhance both brightness and current efficiency to 30 810 cd/m² and 8.3 cd/A, about 2 times in comparison to results for the control devices. Upon further investigation by optical and impedance spectroscopy, we find the phase modulation can improve the balance of charge carrier injection without sacrificing the transport ability. We believe our studies can provide new inspiration on the influence of phase arrangement in PeLED devices.

中文翻译：

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通过真空极化进行相位调制，以提高准二维基于溴化钙钛矿的发光二极管的性能。

准二维（准2D）钙钛矿作为一种新型的高效发光材料，在工业显示应用中显示出巨大的潜力。在这项工作中，极化方法用于调制准2D钙钛矿发光二极管（PeLED）的相位排列。我们发现，以均匀排列的不同相位分量的有效调制可以将亮度和电流效率提高到30 810 cd / m ²和8.3 cd / A，是控制设备结果的两倍。通过光学和阻抗光谱的进一步研究，我们发现相位调制可以在不牺牲传输能力的情况下改善电荷载流子注入的平衡。我们相信我们的研究可以为PeLED器件中的相安排的影响提供新的启示。