Luminescence properties of Eu3+/CDs/PVA composite applied in light conversion film

In this work, blue-light-emitting carbon dots (CDs) were composited with red-light-emitting europium ions (Eu 3+ ) solutions under the synergistic reaction of polyvinyl alcohol (PVA) to prepare the light conversion film. The formation mechanism of Eu 3+ /CDs/PVA film was detailedly discussed. It is the first report that this composite was synthesized through direct recombination of CDs and Eu 3+ solutions instead of traditional methods based on Eu 3+ coordination compound. Furthermore, tunable photoluminescence property can be successfully achieved by controlling the ratio of CDs to doped Eu 3+ , this property can meet the variable light component requirements for different species of plants.