We report the tunable emission color from carbon-dot based light-emitting diodes. The color is controlled by their driving current. Tuning the device structrure and the injecting current density we can get multi-color emission ofblue, cyan, magenta, and white from the same carbon dots.This has not been observed for a single emitting layer structured nanomaterial light-emitting diodes. The current density-dependent emission will be useful for color light-emitting diodes.

Tunable electroluminescence from carbon dot LEDs

247th National Meeting (2014)

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