Color-tunable carbon dots/Y2WO6: Eu3+ embedded composite bulk

A color-tunable fluorescence composite bulk based on carbon dots and Y2WO6: Eu3+ as blue and red emitting materials, respectively, was fabricated. Due to the different excitation regions of the two materials, the emission color of the composite can be tuned from red, across magenta into the blue via varying excitation wavelengths. At the same time, the material is still considerably optically transparent, which demonstrates a clear advantage for integration into real applications. (C) 2016 Optical Society of America