| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an organic light emitting element which is driven at a low voltage, and has sufficient emission efficiency and a long continuous drive life. <P>SOLUTION: The organic light emitting element 11 is constituted of: an anode 2; a cathode 4; and an organic compound layer which is sandwiched between the anode 2 and the cathode 4, and has at least a light emitting layer 3. The light emitting layer 3 is provided with: a host being a main component; a first dopant; and a second dopant. Only the second dopant emits light, and a relation of (a) first maximum luminous wavelength (H)<first maximum luminous wavelength (D1)<first maximum luminous wavelength (D2), and (b) LUMO (D2)<LUMO (D1)<LUMO (H), and (c) HOMO (D2)≤HOMO (H)<HOMO (D1) is satisfied among the host, the first dopant, and the second dopant. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
