基于量子点(QD)的RGB微发光二极管(μ-LED)技术显示出实现全彩显示的巨大潜力。在这项研究中,我们提出了一种新颖的结构设计,结合了蓝色和量子阱(QW)-混合紫外(UV)-混合μ-LED,以实现高颜色转换效率(CCE)。第一次,QD和TiO2浓度的各种组合的影响,以及光致发光效率(PLQY)的厚度变化,已经通过模拟进行了系统的检查。作为这些模拟的结果,高效的颜色转换层(CCL)已被成功制造,从而显著节省时间和材料成本。通过在CCL中加入TiO2的散射颗粒,我们成功地散射光和分散量子点,有效减少自聚集,大大提高照明均匀性。此外,这种设计显著增强了QD膜内的光吸收。为了提高器件的可靠性,我们在CCL表面上引入了使用低温原子层沉积(ALD)技术的钝化保护层。此外,我们实现了令人印象深刻的CCE值96.25%和92.91%的红色和绿色CCL,分别,通过集成改进的分布式布拉格反射器(DBR)来抑制光泄漏。我们的混合结构设计,结合光学模拟系统,不仅有助于快速获取最佳参数,以在μ-LED显示器中进行高度均匀和高效的颜色转换,而且还扩大了色域,在国家电视标准委员会(NTSC)领域达到128.2%,在Rec中达到95.8%。2020年标准。实质上,这项研究概述了开发定制产品的有希望的途径,高性能μ-LED显示屏。
Quantum dot (QD)-based RGB micro light-emitting diode (μ-LED) technology shows immense potential for achieving full-color displays. In this study, we propose a novel structural design that combines blue and quantum well (QW)-intermixing ultraviolet (UV)-hybrid μ-LEDs to achieve high color-conversion efficiency (CCE). For the first time, the impact of various combinations of QD and TiO2 concentrations, as well as thickness variations on photoluminescence efficiency (PLQY), has been systematically examined through simulation. High-efficiency color-conversion layer (CCL) have been successfully fabricated as a result of these simulations, leading to significant savings in time and material costs. By incorporating scattering particles of TiO2 in the CCL, we successfully scatter light and disperse QDs, effectively reducing self-aggregation and greatly improving illumination uniformity. Additionally, this design significantly enhances light absorption within the QD films. To enhance device reliability, we introduce a passivation protection layer using low-temperature atomic layer deposition (ALD) technology on the CCL surface. Moreover, we achieve impressive CCE values of 96.25% and 92.91% for the red and green CCLs, respectively, by integrating a modified distributed Bragg reflector (DBR) to suppress light leakage. Our hybrid structure design, in combination with an optical simulation system, not only facilitates rapid acquisition of optimal parameters for highly uniform and efficient color conversion in μ-LED displays but also expands the color gamut to achieve 128.2% in the National Television Standards Committee (NTSC) space and 95.8% in the Rec. 2020 standard. In essence, this research outlines a promising avenue towards the development of bespoke, high-performance μ-LED displays.