Patent ID: 8207526
Filing Date: 2012-06-26
Classification: C09K,H01L,H05B

Abstract:
1. An organic electroluminescence device, comprising: an anode for injecting holes; a phosphorescent-emitting layer; a charge blocking layer; a fluorescent-emitting layer; and a cathode for injecting electrons, in this order, the phosphorescent-emitting layer containing a phosphorescent host and a phosphorescent dopant for providing phosphorescence, the fluorescent-emitting layer containing a fluorescent host and a fluorescent dopant for providing fluorescence, the charge blocking layer blocking the electrons injected into the fluorescent-emitting layer from being injected toward the charge blocking layer from the fluorescent-emitting layer, the charge blocking layer also injecting the holes into the fluorescent-emitting layer from the phosphorescent-emitting layer, a triplet energy gap Eg