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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Daktronics of Brookings, South Dakota, has partnered with the American Association of Professional Baseball (AAPB) as its official video display and control equipment provider to bring education and professional sports together. “This pa... READ MORE

As Nichia marks the key milestones of 70 years in business and 30 years since pioneering the white LED, its European division has organized a two-day, invite-only Innovation Gallery. Held on 10 and 11 March at Bernhard Knaus Fine Art, a presti... READ MORE