申请人:MERCK PATENT GMBH
公开号:US20150303397A1
公开(公告)日:2015-10-22
An organic electroluminescent device the emits light in the UV and blue region of the visible spectrum, the device comprising an anode, a cathode, at least one emission layer and at least one exciton-blocking layer (ExBL) between an emission layer and anode, wherein the exciton-blocking layer includes an inorganic material having a wide band gap and the use of the device in phototherapy.