Organic light-emitting diode and preparation method thereof
An electroluminescence device and electroluminescence technology, which are applied in the directions of organic semiconductor devices, materials of organic semiconductor devices, and electric solid devices, etc., can solve the problems of limiting the performance of flexible OLED products, weak water and oxygen resistance, and complicated preparation process, etc. Achieve excellent corrosion resistance, improve light transmittance, and high chemical stability.
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Embodiment 1
[0119] An organic electroluminescent device is prepared through the following steps:
[0120] (1) Provide a clean anode conductive substrate:
[0121] Clean the ITO glass substrate with acetone, ethanol, deionized water, and ethanol in an ultrasonic cleaner in sequence, wash and wash for 5 minutes in one item, then blow dry with nitrogen, and dry in an oven for later use; surface activation of the cleaned ITO glass processing; ITO thickness is 100nm;
[0122] (2) Vacuum evaporation of the luminescent functional layer on the ITO glass substrate:
[0123] Specifically, the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer and the electron injection layer are prepared by vacuum evaporation in sequence;
[0124] Preparation of the hole injection layer: the MoO 3 Doped into NPB, the doping mass fraction is 30%, the thickness is 10nm, and the vacuum degree is 1×10 -5 Pa, evaporation rate
[0125] Preparation of the hole tra...
Embodiment 2
[0141] An organic electroluminescent device is prepared through the following steps:
[0142] (1), (2), (3) are the same as embodiment 1;
[0143] (4) Prepare the encapsulation layer on the outside of the cathode:
[0144] An encapsulation layer unit is prepared by the following method: sequentially vacuum evaporation to prepare the first organic barrier layer, the second organic barrier layer, the mixed barrier layer, the third organic barrier layer, the fourth organic barrier layer and the inorganic barrier layer, specifically :
[0145] Production of the first organic barrier layer: NPB is used as the material of the first organic barrier layer, and the vacuum degree is 1×10 -4 Pa, evaporation rate Thickness 300nm;
[0146] Production of the second organic barrier layer: BCP is used as the material of the second organic barrier layer, and the vacuum degree is 1×10 -4 Pa, evaporation rate Thickness 300nm;
[0147] Production of mixed barrier layer: The mixed barrier...
Embodiment 3
[0153] An organic electroluminescent device is prepared through the following steps:
[0154] (1), (2), (3) are the same as embodiment 1;
[0155] (4) Prepare the encapsulation layer on the outside of the cathode:
[0156] An encapsulation layer unit is prepared by the following method: sequentially vacuum evaporation to prepare the first organic barrier layer, the second organic barrier layer, the mixed barrier layer, the third organic barrier layer, the fourth organic barrier layer and the inorganic barrier layer, specifically :
[0157] Production of the first organic barrier layer: Alq3 is used as the material of the first organic barrier layer, and the vacuum degree is 1×10 -4 Pa, evaporation rate Thickness 250nm;
[0158] Production of the second organic barrier layer: TPBi is used as the material of the second organic barrier layer, and the vacuum degree is 1×10 -4 Pa, evaporation rate Thickness 250nm;
[0159] Production of mixed barrier layer: The mixed barri...
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