2013-06-28

Powerful Red GaN LEDs Made with Europium and Magnesium Codoping

Europium (Eu) doped nitride semiconductors make it possible to create novel optical devices, such as a low threshold lasers and single photon emitters. However, not all europium ions are incorporated in semiconductor optical active site that can be excited through the GaN host. Therefore, it is important to develop methods to selectively incorporate europium ions in higher-efficiency optical sites. Hiroto Sekiguchi and his colleagues at Toyohashi University of Technology and Hamamatsu Photonics Ltd have improved the emission intensity from europium ions by magnesium co-dop...
Continue reading

Michael Kruppa, Head of Front Lighting Development, has been responsible for various areas of development at Audi for more than ten years. Together with his development team, he plays a key role in ensuring that an Audi provides the best possi... READ MORE

Signify, the world leader in lighting, has been awarded the Platinum sustainability rating from EcoVadis, underscoring its consistent leadership in sustainability. The ranking places Signify among the top 1% of companies evaluated worldwide. W... READ MORE