Cover Picture: High-Speed Color-Switching Silicon LEDs (Adv. Mater. 20/2008)



original image

The cover shows a time-sequence illustration of a color-switching silicon LED. The emission is switching from infrared (false color, purple) to visible (near real color, orange) on a vertically winding time axis. The upper left image represents a single micro-LED switching in time between the visible, infrared, and off states. Further details can be found in the article on p. 3844 by Al Meldrum and Sulan Kuai.