www.semiconductor-today.com
2026-06-22
Semiconductor Today
Researchers in China report on tunnel-junction (TJ) blue micro light-emitting diodes (LEDs) reaching wall-plug efficiencies of 45.23% [Yao Wang et al, Optics Express, v34, p17683, 2026]. The researchers used a device structure that avoided the post-growth thermal annealing, which is normally applied to activate the magnesium doping needed to realize p-type gallium nitride (p-GaN).
“This work elim
www.graphene-info.com
2026-05-27
Graphene-Info
Share on LinkedIn
Researchers at Korea's Kumoh National Institute of Technology and Yeungnam University have developed a flexible GaN light-emitting diode (LED) that integrates chemical vapor deposition (CVD) graphene as a transparent current-spreading (TCS) layer on a carbon-supported polyethylene terephthalate (PET) substrate. The device, fabricated using a 2-inch wafer-scale laser lift-off (L