About the Cover
A PNC-µLED device for realizing full-color display and high-speed communication simultaneously is developed. A semipolar (20-21) blue µLED array is employed for blue pixels, data transition, and exciting CsPbBr3 and CsPbBrI2 PNCs for green and red pixels. The PNCs are encapsulated in SiO2 shells which remarkably enhance the stability.