Optical Waveguide Color Tuning by Fluorescence-Phosphorescence Dual Emission and Disparity of Optical Losses

Organic photonic materials have high refractive index, fast transfer speed, low heat generation, and so on; and therefore, have great potential in optoelectronics and optical micro/nanocircuits. Herein, a new strategy using fluorescence-phosphorescence dual emission and disparity of optical loss in a smooth needle-like organic crystal is reported to realize color tuning of the optical waveguide (OWG). Especially, a warm white-light OWG emission is achieved by appropriately adjusting the excitation position, presenting the first report of single-component organic waveguide with white light emission. Based on this, the as-prepared 1D organic crystal has been demonstrated as a microscale optical correspondence device with multiple input and output responses, which offers potential applications in modern optics and photonics fields.