Organic electroluminescent device, method of preparing same, display substrate, and display apparatus
First Claim
1. A method of preparing an organic electroluminescent device, comprising the following steps:
- mixing an organic solvent, a charge control agent, an electroluminescent polymer and quantum dots homogeneously to obtain an electrostatic spinning solution; and
forming the electrostatic spinning solution into a quantum dot-containing organic electroluminescent film by an electrostatic spinning process, wherein the quantum dot-containing organic electroluminescent film is formed from fibers of the electroluminescent polymer dispersed with the quantum dots.
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Abstract
This invention provides an organic electroluminescent device, a method of preparing the same, a display substrate comprising the same, and a display apparatus. According to the invention, the agglomeration and self quenching of quantum dots can be effectively prevented as the quantum dots are uniformly dispersed in electroluminescent polymer fibers. Due to the fluorescence resonance energy transfer effect between the electroluminescent polymer and the quantum dots, a higher quantum yield is achieved, and the luminescence efficiency of the quantum dots can be improved accordingly. Furthermore, since the light emission from the quantum dots is achieved by the fluorescence resonance energy transfer effect, which is an energy transfer process without damage to the quantum dots, the damage to quantum dots is less and thus the lifetime thereof can be beneficially increased, as compared to the direct charge injection mode of the prior art.
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20 Claims
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1. A method of preparing an organic electroluminescent device, comprising the following steps:
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mixing an organic solvent, a charge control agent, an electroluminescent polymer and quantum dots homogeneously to obtain an electrostatic spinning solution; and forming the electrostatic spinning solution into a quantum dot-containing organic electroluminescent film by an electrostatic spinning process, wherein the quantum dot-containing organic electroluminescent film is formed from fibers of the electroluminescent polymer dispersed with the quantum dots. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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- 10. An organic electroluminescent device, comprising a quantum dot-containing organic electroluminescent film formed from fibers of electroluminescent polymer dispersed with quantum dots, wherein the fibers further comprise a charge control agent.
Specification