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.
Continue reading
XLamp® CTW LEDs bring lighting flexibility to life New XLamp® CTW Series – Two-Channel CCT-Tunable White COB LEDs Cree LED’s XLamp CTW Series redefines CCT-tunable COB LEDs with unmatched lumen density, efficiency and de... READ MORE
ams OSRAM, a global leader in innovative light and sensor solutions today held a roundtable forum spotlighting new opportunities with high precision illumination characterization. The event brought together experts from industry, academia, and... READ MORE