Polymer colour converter with very high modulation bandwidth for visible light communicationsElectronic supplementary information (ESI) available. See DOI: 10.1039/c7tc03787b

For white light data communications, broadband light emitting materials are required, whose emission can be rapidly modulated in intensity. We report the synthesis, photophysics and application of a novel semiconducting polymer for use as a high bandwidth colour converter, to replace commercial phosphors in white LEDs. The high modulation bandwidth (470 MHz) is 140 times higher than that measured using a conventional LED phosphor. We report the synthesis, photophysics and application of a novel semiconducting polymer as a colour converter for high speed visible light communication.