Optics research uses dim light to produce bright LEDs

Researchers at Princeton and North Carolina State University have developed a technique that substantially improves the ...
IEEE

Achieving InGaN-Based Red Light-Emitting Diodes by Increasing the Growth Pressure of Quantum Wells

Abstract: We extended the emission wavelength of indium gallium nitride (InGaN) quantum wells to the yellow–red region by utilizing increased growth pressure. A clear 54-nm redshift of the peak ...
IEEE

Enhancing the Performance for High-Power AlGaN-Based Deep Ultraviolet Light-Emitting Diodes Using Self-Assembled Chip-Scale Inclined Sidewall

Abstract: It is well known that inclined sidewall scattering structures can improve the light extraction efficiency (LEE) of micro deep ultraviolet (DUV) light-emitting diodes (LEDs). However, ...
National Geographic news

LED light therapy for skin is trendy—but does it work?

Dermatologists explain the science behind wildly popular treatments like red light therapy, which is now available at home—for a steep price. Full-face LED masks like this one can cost up to several ...