Ultra-simple white organic light-emitting diodes employing only two complementary colors with color-rendering index beyond. RSC Adv. 2017, 7, 49769–49776. [CrossRef] 83. Zhao, C.; Zhang, T.; Chen, J.; Yan, D.; Ma, D. High-performance hybrid white organic light-emitting diodes with ...
The optical signals are intensity modulated (IM) in all colors. The duration of the ON (1s) cycle followed by the OFF (0s) cycle of transmitting information is short enough that the LED appearance is always ON to be humanly imperceptible, so, it will not affect the traffic control. In ...