Blue organic electroluminescent device and preparation method thereof
AssigneeChangchun Institute of Applied Chemistry Chinese Academy of Sciences
InventorsLiang Zhou, Hongjie Zhang, Xuesen Zhao
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Abstract
The present disclosure provides a blue organic electroluminescent device comprising: a substrate; an anode layer disposed on the substrate; a light emitting layer disposed on the anode layer, the light emitting layer being formed from a blue organic fluorescent material and a hole-type organic host material, wherein the blue organic fluorescent material is 8.0% to 25.0% by mass of the hole-type organic host material; and a cathode layer disposed on the light emitting layer.
Claims11
A blue organic electroluminescent device, comprising:
- a substrate;
- an anode layer on the substrate;
- a light emitting layer on the anode layer, the light emitting layer comprising a blue organic fluorescent material and a hole-type organic host material, wherein the blue organic fluorescent material is 8.0% to 25.0% by mass of the hole-type organic host material, and an excited state energy of the blue organic fluorescent material is lower than an excited state energy of the hole-type organic host material;
- and
- a cathode layer on the light emitting layer.
A preparation method of a blue organic electroluminescent device, the method comprising the steps of:
- forming an anode layer on a substrate;
- forming a light emitting layer on the anode layer, the light emitting layer being formed from a blue organic fluorescent material and a hole-type organic host material, wherein the blue organic fluorescent material is 8.0% to 25.0% by mass of the hole-type organic host material, and an excited state energy of the blue organic fluorescent material is lower than an excited state energy of the hole-type organic host material;
- and
- forming a cathode on the light emitting layer, thereby obtaining the blue organic electroluminescent device.
Dependencies are inferred from the claim text.