Laminated organic electroluminescent device

Laminated organic electroluminescent device

  • CN 106,784,355 B
  • Filed: 12/29/2016
  • Issued: 10/18/2019
  • Est. Priority Date: 12/29/2016
  • Status: Active Grant
First Claim
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1. a kind of laminated organic electroluminescent device, which is characterized in that including the first electrode being cascading from top to bottom(110), the first luminescence unit (210), third electron transfer layer (330), the second electron transfer layer (320), the first electron-transportLayer (310), charge generation layer (400), the second luminescence unit (220) and second electrode (120);

  • N-type dopant, and first electricity are contained in first electron transfer layer (310) and the second electron transfer layer (320)The concentration of n-type dopant is greater than the concentration of n-type dopant in second electron transfer layer (320), institute in sub- transport layer (310)Third electron transfer layer (330) are stated without n-type dopant;

    The concentration of n-type dopant is 1wt%-20wt%, second electron transfer layer in first electron transfer layer (310)(320) concentration of n-type dopant is 1wt%-10wt% in;

    The n-type dopant include in the metallic compound of alkali metal, alkaline-earth metal, rare earth metal and the above metal at leastIt is a kind of;

    First electron transfer layer (310), the second electron transfer layer (320) and third electron transfer layer (330) include masterBody material, the material of main part include at least one of 4,7- diphenyl -1,10- ferrosin and 8-hydroxyquinoline aluminium;

    The n-type dopant include lithium, sodium, potassium, rubidium, caesium, francium, beryllium, magnesium, calcium, silicon, barium, radium, lanthanum, cerium, praseodymium, neodymium, samarium, europium,At least one of terbium, thorium, dysprosium, holmium, erbium, gadolinium, ytterbium, lutetium, yttrium, manganese and metallic compound of the above metal;

    The material of first electron transfer layer (310) and the second electron transfer layer (320) is the 4,7- diphenyl-of elements doped lithium1,10- ferrosin, the doping concentration of lithium is 10wt%, second electron transfer layer in first electron transfer layer (310)(320) doping concentration of lithium is 5wt% in;

    The material of the third electron transfer layer (330) is 8-hydroxyquinoline aluminium;

    DescribedThe thickness of one electron transfer layer (310), the second electron transfer layer (320) and third electron transfer layer (330) is 10nm.

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