An organic electroluminescent device having an organic emitting layer and a hole transport layer laminated with each other and arranged between a cathode and an anode, and the hole transport layer is made of tris-phenothiazinyl-triphenylamine or tris-phenoxazinyl-triphenylamine derivative. The hole transport layer has a high heat-resistant property and high conductivity to improve durability and emits light at a high luminance and a high efficiency upon application of a low voltage.
申请公布号
US5374489(A)
申请公布日期
1994.12.20
申请号
US19930037101
申请日期
1993.03.26
申请人
PIONEER ELECTRONIC CORPORATION;SHIROTA, YASUHIKO;BANDO CHEMICAL INDUSTRIES, LTD.