| abstract |
The invention discloses a composite material, a preparation method thereof and a quantum dot light emitting diode. The composite material includes MoO3 nanomaterials and organic compounds, the organic compounds are condensed ring hydrocarbons or derivatives thereof, molybdenum atoms in the MoO3 nanomaterials are combined with carbon atoms in the organic compounds, and the MoO3 The oxygen atoms in the 3 nanomaterial are combined with the hydrogen atoms in the organic compound, and the LUMO energy level of the MoO 3 nanomaterial is lower than the LUMO energy level of the organic compound. In the present invention, since the LUMO energy level of MoO 3 is lower than the HOMO orbital energy level of the fused ring hydrocarbon or its derivatives, the electrons on the HOMO energy level of the fused ring hydrocarbon or its derivatives are easily transferred to the LUMO energy level of MoO 3 On the level, free holes are formed, thereby improving the hole transport performance, thereby improving the luminous efficiency of the quantum dot light-emitting diode. |