Electroluminescent element
First Claim
1. An electroluminescent element comprising:
- an anode for injecting holes, a cathode for injecting electrons and, disposed therebetween, an organic luminescent layer, at least one of said anode and cathode being transparent,said organic luminescent layer comprising a three component mixture of at least one fluorescent luminescent agent, at least one hole moving and donating agent capable of moving the holes injected from said anode and donating the holes to said luminescent agent, and at least one electron moving and donating agent capable of moving the electrons injected from said cathode and donating the electrons to said luminescent agent,said luminescent agent having a first oxidation potential which is equal to or less noble relative to that exhibited by said hole moving and donating agent,said luminescent agent having a first reduction potential which is equal to or noble relative to that exhibited by said electron moving and donating agent,said first oxidation potential of each of said three component agents and said first reduction potential of each of said three component agents being measured by cyclic voltammetry with respect to a solution of said agent in a solvent for said agent.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is an electroluminescent element comprising an anode, a cathode and, disposed therebetween, an organic luminescent layer comprising a mixture of a fluorescent luminescent agent, at least one hole moving and donating agent capable of moving holes and donating the same to the luminescent agent and at least one electron moving and donating agent capable of moving electrons and donating the same to the luminescent agent. In the element, the components of the luminescent layer have specific oxidation potential and reduction potential relationships. The element emits light in response to electrical signals. The element exhibits high luminescence efficiency and brightness even at low voltages, and it can efficiently be produced at low cost.
470 Citations
35 Claims
-
1. An electroluminescent element comprising:
-
an anode for injecting holes, a cathode for injecting electrons and, disposed therebetween, an organic luminescent layer, at least one of said anode and cathode being transparent, said organic luminescent layer comprising a three component mixture of at least one fluorescent luminescent agent, at least one hole moving and donating agent capable of moving the holes injected from said anode and donating the holes to said luminescent agent, and at least one electron moving and donating agent capable of moving the electrons injected from said cathode and donating the electrons to said luminescent agent, said luminescent agent having a first oxidation potential which is equal to or less noble relative to that exhibited by said hole moving and donating agent, said luminescent agent having a first reduction potential which is equal to or noble relative to that exhibited by said electron moving and donating agent, said first oxidation potential of each of said three component agents and said first reduction potential of each of said three component agents being measured by cyclic voltammetry with respect to a solution of said agent in a solvent for said agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
Specification