Relocating LEDs from Silicon to Copper Enhance Efficiency for LED Lighting
Relocating LEDs from Silicon to Copper Enhance Efficiency for LED Lighting
Jun 14,12
Anita Cheung
Chinese researchers have successfully transferred gallium nitride (GaN) LEDs emitting diode (LED lighting)
growth layer silicon copper layer.Make new copper substrate enabled the GaN crystals to release some of
the internal stresses generated when they originally formed. the light output of LED lighting on copper
was enhanced by 122 percent.and increase the service life of LED lighting.
The relocation of the LEDs( for LED lighting) produced no obvious deterioration in the crystals'
light-emitting region, known as multiple quantum wells.The researchers blame on efficiency improvement,
absorbing substrate removal; the insertion of a metal reflector between the LEDs' structure and
the copper submount;the elimination of electrode shading, which also reduces efficiency; and the
rough surface of the exposed buffer layer, as to improve the crystal orientation.increase of
LED lighting efficiency.