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Scalable semipolar gallium nitride templates for high-speed LEDs

Visible emitting LEDs based on gallium nitride (GaN) materials have made tremendous progress since their initial development in the early 1990s. Indeed, these LEDs are now in everyday use in many applications, e.g., for solid state lighting, and for backlighting in televisions and smartphones. LED technology, however, also has several inherent problems. These include decreasing efficiency under high injection current (droop), color change with increasing current, and poor efficiency in the green and yellow parts of the spectrum. These problems are associated with the natural polar (0001) crystal plane of wurtzite GaN, on which commercial LEDs are based, with the use of ‘c-plane’ sapphire substrates.

1 comment:

  1. LED Lighting industry in Saudi Arabia is increasing rapidly with more market captured share to be discover recently, hopefully more active suppliers to be seen in near future.
    LED Lights Dammam
    LED Lights Jeddah
    LED Lights Riyadh

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