Abstract
In this work, a highly effective white light-emitting diode (LED) system is realized by a combination of an LED and a photonic crystal (PC-) structured luminous film. The emission intensity of the PC-structured luminous film emission is enhanced by a factor of ca. 10.6 compared with that of the planar film. The light from the system can give rise to an intense white emission with CIE coordinates (0.33, 0.38). The total emission intensity is over twice greater than that of the usual LED system. Additionally, the emission of the PC-structured films can be switched flexibly. The strategy proposes an efficient and facile method for high excitation and extraction of the luminous film, and it shows great potential for a bright white lighting with excellent colour matching.
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