The team realized these particles were capable of absorbing UV light in the 380-420nm range with high efficiency. ... the team managed to create a simple circuit with around an LED in a single step.

Schematic diagram of self-stabilizing luminescence system built with vertically integrated devices. ... UV micro-LEDs for sensing, production and communication. Jul 11, 2022.

Working Electronic Circuits 3D-Printed With UV Light. The circuits are based on a conductive metallic ink along with an insulating polymeric ink printed in a single process.