The COVID-19 pandemic has generated great interest in ultraviolet (UV) disinfection,
particularly for air disinfection. Although UV disinfection was discovered close to 90 years …

Perusing multimode luminescent materials capable of being activated by diverse excitation
sources and realizing multi-responsive emission in a single system remains a challenge …

Solar-blind ultraviolet-C (UVC; 200–280 nm) luminescent materials have exhibited great
potential for wide applications in photomedicine and photochemistry due to the unique …

Conventional ultraviolet lamps for disinfection emit radiation in the 255–270 nm range,
which poses a high risk of causing cancer and cataracts. To address these concerns, solid …

Glassy phosphors offer a promising opportunity to overcome the limits of polycrystalline
counterparts, thanks to their merits including excellent optical transparency, abandonment of …

Ultraviolet (UV) upconversion has attracted much attention in recent years due to its
applications in biomedicine, nanophotonics, and other fields. However, it remains a …

The epitaxy of III-nitrides on metallic substrates is competitive due to the advantages of
vertical carrier injection, enhanced heat dissipation, and flexible application in various III …

To overcome the challenges associated with conventional ultraviolet-C (UV-C) light-emitting
devices—such as toxic mercury, aging of organic adhesives, and various stability concerns …

This study fabricated high-voltage, low-current DUV-LEDs by connecting two devices. Due
to better current spreading and the enhanced reflective mirror effect, high-voltage devices …

Fresnel zone plates (FZPs) are diffractive optical structures composed of many symmetrical
concentric rings and are widely used in nanofocusing and beam collimation. In this article …