2009-03-11

Oxford Instruments - TDI unites LED maker develop semi-polar GaN

Group III-nitride materials have been widely used for visible and ultraviolet LEDs and blue, violet laser diodes in the past decade. Most of these optoelectronic devices are typically fabricated on the conventional polar (0001) c-plane oriented substrate materials. Devices grown on the polar substrate orientation suffer undesirable spontaneous and piezoelectric polarization resulting in significant band bending in the quantum well. This reduces radiative recombination efficiency and lowers device performance.
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Delivering a new game-day experience to Tar Heels fans at Kenan Stadium, Daktronics (NASDAQ: DAKT) of Brookings, South Dakota, partnered with the University of North Carolina (UNC) in Chapel Hill to manufacture and install 11 LED displays tota... READ MORE

Sumitomo Chemical is pleased to announce its participation in PCIM Europe 2026, which will be held in Nuremberg, Germany, from Tuesday, June 9 to Thursday, June 11, 2026. Established in 1979, this annual event showcases the latest advancements... READ MORE