ZnO as an eco-friendly material shows bright luminescence under UV illumination when it is tailored into nanoscale size, which makes it a promising luminescent nanomaterial. However, the poor stability of ZnO hinders its applications drastically. In this work, [email protected]₄-shell ([email protected]₄) nanocomposite has been prepared through a non-equilibrium sorption process employing ZnO QDs as the “seeds” and BaSO₄ as the “valve”. The [email protected]₄ nanocomposite shows improved photo-, thermal- and ambient-stability compare with bare ZnO QDs. The fluorescence efficiency of the [email protected]₄ nanocomposite decreases little even after 60 h of UV irradiation compare with ZnO QDs. The [email protected]₄ nanocomposite shows bright luminescence with little decrease even the ambient temperature up to 160 °C and the nanocomposite shows strong resistance to harsh environment. By coating the [email protected]₄ nanocomposite and commercial phosphors onto UV-chip, light-emitting diode (LED) with correlated color temperature, Commission Internationale de L'Eclairage coordinate, color rendering index and luminous efficiency of 6109 K, (0.32, 0.33), 85 and 47.33 lm/W have been realized, and this will make a great step towards eco-friendly UV-pumped LEDs.

ZnO作为一种环保材料，将其定制为纳米级尺寸后，在紫外线照射下会显示出明亮的发光，这使其成为一种很有前途的发光纳米材料。但是，ZnO的稳定性差，严重阻碍了其应用。在这项工作中，通过非平衡吸附工艺，使用ZnO QD作为“种子”，并使用BaSO ₄作为“阀门”，制备了[受电子邮件保护的] ₄壳（[受电子邮件保护的] ₄）纳米复合材料。与裸露的ZnO量子点相比，[受电子邮件保护的] ₄纳米复合材料显示出更高的光稳定性，热稳定性和环境稳定性。[电子邮件保护的] ₄的荧光效率与ZnO QDs相比，即使在60 h的紫外线照射下，纳米复合材料也几乎没有减少。[电子邮件保护] ₄纳米复合材料即使在高达160°C的环境温度下也显示出明亮的发光，并且几乎没有下降，并且纳米复合材料显示出对恶劣环境的强大抵抗力。通过将[受电子邮件保护的] _4种纳米复合材料和商用磷光体涂覆到具有相关色温的UV芯片，发光二极管（LED），Commission Internationale de L'Eclairage坐标，显色指数和6109 K的发光效率，（0.32，已经实现了0.33），85和47.33 lm / W的光通量，这将朝着生态友好型紫外线泵浦LED迈出一大步。