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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Before kickoff, there is silence throughout the stadium. Floodlights illuminate the pitch, every blade of grass precisely trimmed, dense, and vibrantly green. But soon, the turf will endure hours of intense match play — sprints, tackles,... READ MORE

ams OSRAM, global leader in innovative light and sensor solutions, announced today that its OSIRE™ E3731i intelligent RGB LED, based on the Open System Protocol (OSP), has been successfully integrated into the NIO ES9 — NIO’s... READ MORE