Figure 5

Visible micro-LEDs on graphene. (a) Optical microscopy images of light emission from the LED at different applied currents. (b) EL spectra from micro-LEDs (c) I–V characteristic curve of the LED.
Visible micro-LEDs on graphene. (a) Optical microscopy images of light emission from the LED at different applied currents. (b) EL spectra from micro-LEDs (c) I–V characteristic curve of the LED.