In micro-light-emitting diode (micro-LED) displays with color-conversion layers, a facile and efficient technology getting rid of the use of the color filters leads to a big technical leap in cost-effective fabrication. In this study, it is demonstrated that quantum dot (QD) color conversion layers can significantly suppress residual blue excitation light because of the high extinction coefficients of QDs, ∼0.1% transmittance of blue light for green and red core/shell CdSe/ZnS QD film with thickness of less than 17 μm, and produce green and red colors. Incorporation of TiO₂ nanoparticles into QD solutions enhances more than 10% of the luminous intensity by the scattering effect. It is found that the suppression of QD reabsorption is essential to achieve a high color-conversion efficiency. Our results provide a clear path to a cost-effective fabrication of QD conversion layer micro-LED displays over the full range of their applications.

中文翻译：

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量子点作为颜色转换层和抑制全彩 Micro-LED 显示器输入光的双重作用

在具有颜色转换层的微型发光二极管 (micro-LED) 显示器中，一种简单高效的技术摆脱了滤色器的使用，从而在成本效益制造方面实现了巨大的技术飞跃。在这项研究中，证明量子点 (QD) 颜色转换层可以显着抑制残留的蓝色激发光，因为 QD 的消光系数高，绿色和红色核/壳 CdSe/ZnS QD 的蓝光透射率约为 0.1%厚度小于17微米的薄膜，并产生绿色和红色。TiO _{2 的}掺入纳米粒子进入 QD 溶液通过散射效应增强了 10% 以上的发光强度。发现抑制 QD 重吸收对于实现高颜色转换效率至关重要。我们的结果为在 QD 转换层 micro-LED 显示器的整个应用范围内进行经济高效的制造提供了一条清晰的途径。